Can Gasoline Engines Replace UAV Batteries to extend UAV flight time?

Flight time has been a very vexing problem for most of UAV hobbyists. Generally speaking, the flight time for the high end consumer-level UAV is about 25mins; however, the flight time of UAVs for commercial use is not that long.

Many companies desire longer flight time for their own UAVs and are depressed by a constant replacement and charging for the batteries. Most UAVs are powered by the high-end lipo batteries, also regarded as the low energy density battery. That is to say, as to its voltage, the volume of this battery should not be that big. It is unrealistic get a longer flight time for the UAVs by just adding the batteries packs.

After the research and development, Pegasus has come out with a solution of using gasoline instead of using batteries. This company is now having a beta test for the GE-30RangeExtender system, which is a gas-electric hybrid that can be inserted in the battery terminals for most of the commercial- level UAVs. The flight time for the current UAVs is lengthened to 2 hours owing to this system, and it is possible that this system would be used for the bigger models in the future.

The gasoline can bring more energy than the battery according to energy density. A record from the American Institute of Physics shows that the energy of a car filled with gasoline equals to the energy that a thousand dynamite rods can make, and the energy density of the gasoline is 50 times higher than the UAV battery.

In essence, RangeExtender is the two-stroke internal combustion engine that fits for the UAVs though it is not as easy as it sounds. You can not just install the rotors on the grass trimmer to make it fly, or maybe someone has already done this before. Of course, you can make an UAV that looks like a grass trimmer, but that would be a different story.

RangeExtender is a system of gas-electric hybrid made from Pegasus, which can generate appropriate power to wheels, but it is not equipped with electric engine and gas engine as the hybrid electric. RangeExtender is not just mechanically integrated with the UAV but a micro edition of the power system used by large ships. It converts the energy powered by the gas engine into electric power and provides power for the electric motor to make the propellers work.

A good news is that RangeExtender can be purchased in this late summer. RangeExtender would be used by large commercial UAVs. Till now, Pegasus has not mentioned the price, but it has put forward by the MattMcRoberts that RangeExtender would cost far less than $12000 of an annual expense of the batteries for most of commercial UAV operators.
Pegasus is not the first company who's tried to solve the existing problems for the UAV battery. TopFlightTechnologie from Massachusetts has tried to use generator, powered by gas engine, to charge for the UAV batteries. The hydrogen fuel cell provided by the UK IntelligentEnergy can also extend 2 hours' flight time for the UAVs just as the Pegasus system.

Of course, nobody gets cheered by the gas-powered UAVS besides the operators who use commercial UAVs to survey the petrol pipeline or mine. According to the record of US Energy Information Administration, a gallon of petrol could produce nearly 20 pounds of carbon dioxide. The gasoline, maybe, can not replace the UAV batteries but it is a new step forward towards the UAV flight time issues. Grepow is now achieving great success in UAV batteries, and many UAV pilots are getting impressed by its new smart battery-Tattu battery. You may also take a look at the tattu batteries if you're interested in it.

The Funny of Play RC Car games

I have access to the RC cars by accident and was deeply attracted by their glamour. This is a set of equipment with individual character appearance, high-tech configuration, super running speed, and high degree of simulation. Although it is not the carrier of my soul, it is a way of bailment of my dreams and memories.

1. What RC exactly is?

RC is the abbreviation of Radio Control. (Literally, it means remote Control or Radio Control.) RC covers a pretty wide range, such as RC cars, airplane models, boat models, and some military drones and battle droids. But we need to emphasis that children's class remote control toys are not RC models.

2.What are the RC models?

RC models in general can be divided into the RC cars, RC airplane model, RC boats, RC robot and etc,they need strong power of 5000mah lipo battery,like Gens ace &Tattu.

The RC cars, we introduce today, is easier to play, compared to the RC airplane model and RC boats. Because RC cars have no requirement for the airspace and water area, and the requirement for ground and site is relatively low. That is to say, as long as there is available ground, you can play your RC cars.

3. What are the differences between the RC model cars and RC toy cars?

Tens dollar remote control cars in the market is only kind of remote control toys, but not RC model cars. They have obvious differences with hundreds or thousands dollars RC model cars:
1>The running distance. RC model cars, belongs to the remote control, can run at least 100m; but remote control toy cars for children can run maximum about 20 meters.

2>The control modes are quite different. RC model cars is "proportion type manipulation". What is "proportion of manipulation"? For example, we turn an angle of 15 degrees, and the wheels on the RC cars also rotate an angle of 15 degrees correspondingly; The accelerator trigger on the remote control is pulled 30%, then the power output in the RC cars is also 30%. But the RC toy cars adopt "switch mode", which means that we cannot do precise instructions, and the steering and speed are only in "0%" or "100%" two states.

3>The mechanical principle and internal structure are also different. The RC model cars is the miniature versions of various real racing cars, so they have the same mechanical principle, suspension system, similar manipulate mode and amazing speed as super racing cars. But the ordinary RC toy cars do not have these characteristics.

4>The RC model cars can be assembled, maintained, refitted to update their configuration, but the ordinary RC toy cars can not be assembled, refitted or maintained in large.

4. What's the fun for playing the RC model cars?

If you are a newbie, my answer would be that it can reach a starting speed as the a real racing car, and you can work with many actions like climbing, cross-country, drifting, tumbling and snapping.

For professional hobbyists, the biggest pleasure comes from the assembling, refitting, maintaining and studying the RC cars, share tips with teammates and the most, manipulating and conquer on the competitions.

5. How many kinds of power do RC model cars have?

The RC model cars have two main types of power: fuel and electric power. Fuel power RC cars use internal combustion engine as power output, the other use RC car batteries lipo /electric motor as power output. There are mainly 2 fuel power; one is gasoline, but not only gasoline, which is a mixture of gasoline and the 2-stroke gasoline engine oil; another is the synthesis of methanol. RC cars, powered by battery/electric motor, will generally use lipo battery or nickel metal hydride battery. If use electric power properly and maintain carefully, it can be recharged and used for a long time. When compared the gasoline and methanol, there will be limit to buy gasoline from the gas station. In contrast, though the methanol mixing fuel can easily access, it would be relatively complex to use integrated methanol cars.

6.The price of RC model cars

The price of RC model car ranges from a few hundreds to thousands dollar. For the newbies who come into this area for the first time, I recommend the price from $350-$500, like the HPI, Horizon Hobby and the many high-end imported brands from US or Europe, which have good quality for entry-level. Some domestic brands also sell some fake high-end foreign brands, and Taiwan also has some high performance brands.
I would not recommend to buy low-price RC cars, because RC cars are high loss products and commonly work in high speed and violent movement. The components quality would not be ensured in low price. At the same time, I will not recommend you to spend 10000dollar or more to play and have fun in the very beginning. The fun of playing RC model cars is in the gradual process. Your skill will be updated according to the accumulation of knowledge and technology.

6 WAYS TO EXTEND DRONE BATTERY LIFE

TIP #1: KNOW EXACTLY HOW AND WHEN TO CHARGE YOUR BATTERY

Charging is the Key to extend the battery's lifespan. For getting the best flight time possible, charge your UAV battery right before you're about to use it. "Freshly" charged batteries usually perform better than ones charged several days beforehand. Besides, when you are not about to fly, charge it only 60% of the way and store it in a safe place instead of fully charge it. And, NEVER OVERCHARGE. If the batteries are charging overly, they may ignite or even explode. It is dangerous and also detrimental to the battery's lifespan.

TIP #2: DON'T ALLOW YOUR BATTERY TO COMPLETELY DRAIN ITSELF

Each time that you do this, you slowly wear down the lifespan of the battery. It is recommended that you fly your quad copter with no less than 3.5V. Once it dips to 3.5V, stop flying and give the battery a rest, then charge it for use next time.

TIP #3: AVOID THE STRONG WIND

When you fly your quadcopter in strong wind, your motors have to produce more thrust to maintain the flight, which requires more power conducted by batteries. Therefore, it is highly recommended to fly in a good weather or low wind.

TIP #4: CHOOSE A CONSERVATIVE FLIGHT MODE

Nearly all RC drones come with various "Flight Modes" that you can switch by simply putting a button. The aggressive mode increases transmitter sensitivity and consume more electricity. Conversely, flying more conservatively consumes the power more slowly with a lower sensitivity. Try to fly conservatively when you are not racing!

TIP #5: LIGHTENING YOUR EQUIPMENT

Since the battery discharges faster while recording and shooting, you can turn on the camera and even remove the camera (if it is detachable) to slow down the pace of discharging. This may be helpful of prolong the battery's lifespan.

TIP #6: BUY EXTRA BATTERIES!

The flyers are now purchasing more batteries, for use or for backup, to maintain a long flight time for their drone. Generally, spare batteries can be accessible easily and can be purchased on sites like:
genstattu.com
These tips can make sense in extending the battery's lifetime, but it is unrealistic to double the flight time. SO, taking good care of the gens ace 2s lipo battery and using it properly.
Source:http://www.genstattu.com/blog/6-ways-to-extend-drone-battery-life/

How to Choose the Best FPV LiPo Battery

FPV is more and more popular now among many RC hobbists and there are more and more newbies come into this hobby. Many new beginners write to us about how to begin and what are the most important point when flying FPV. Among all the questions, the best battery for FPV flight is very often asked.
Many Videos are now showing a battery that could be the best LiPo battery for long distance FPV flying. With the aide of FVP goggles, flying FPV is pretty exciting and real than any other RC drones or airplanes because of the goggles to see the real view in the first sight. Certainly, the spetacular speed of FPV is core for enjoying the FPV flight.

Usually the limiting component on an FPV aircraft for flight is the battery. In the past, I have used about 1300mAh, 45C and 3/4S for FPV, however, Tattu is the first UAV LiPo battery released Tattu 75C 4S 1300mAh LiPo Pack Battery, which get a very good popularity among clients. Certainly, Tattu have many batteries, but this time we will take this amazing one to see why it is so attractive.

                            Tattu 4S 1300 mAh 75C Li-Po Pack Battery

The 4S 14.8V 75c 1300mAh LiPO battery pack is a great choice for many small UAVs which require high discharge rates. This battery packs a ton of power in a compact form factor, giving you the flight time and power your need on your craft.

And the advantages is that Tattu LiPos are packed with vibration-proof & fire-proof material and luxury battery box. Make sure to get your battery in perfect condition. An automatic procedure & Computer system battery cell matching process ensures the batteries stability and quality. Different from the original Gens Ace series, TATTU is specialized for the UAV & UAS market, with their industrial quality (since Gens Ace is based on the Hobby area), their slogan "less is more", "more" means more flight time, more enjoyment, and more satisfaction , and "less" means less weight, simple design. Tattu always develops their products according to these 2 directions giving you a high quality battery.

Tattu's Stable automatic stacking technology enables single cell capacities of 1300mAh. This higher capacity than comparable size packs and without memory effect.

Tattu FPV battery provide high quality, reliable power for your FPV Nemesis 240 Mini, Skylark M4-FPV250, Mini Shredder 200, INDY250 PLUS, HOVERSHIP MHQ2(270), ZMR 250, Emax Nighthawk 250, Mini H, QAV250, QAV180/210, Danaus, Vortex 285, Mini H, FLIP FPV FRAME, Emax Nighthawk 250, ZMR 250, HOVERSHIP MHQ2, MOJO 280, etc.

Choose Tattu FPV battery, you will be surprised.More power, more flight time, and less weight.
Source: http://www.genstattu.com/blog/how-to-choose-the-best-fpv-lipo-battery/

What is the Basic FPV Equipment list?

At first,we can learn something from its definition,First-person view (FPV), also known as remote-person view (RPV), or simply video piloting, is a method used to control a radio-controlled vehicle from the driver or pilot's view point. Most commonly it is used to pilot a radio-controlled aircraft or other type of unmanned aerial vehicle (UAV). The vehicle is either driven or piloted remotely from a first-person perspective via an on board camera, fed wireless to video FPV goggles or a video monitor. More sophisticated setups include a pan-and-tilt gimbaled camera controlled by a gyroscope sensor in the pilot's goggles and with dual on board cameras, enabling a true stereoscopic view.

FPV Equipment

There are two primary components of a FPV setup: the airborne component and the ground component (typically called a ground station). A basic FPV system consists of a camera and an analogue video transmitter on the aircraft with a video receiver and a display on the ground. More advanced setups commonly add in specialized hardware, including on-screen displays with GPS navigation and flight data, stabilization systems, and autopilot devices with "return to home" capability-allowing the aircraft to fly back to its starting point autonomously in the event of a signal loss. Another common feature is the addition of pan and tilt capability to the camera, provided by servos. This, when coupled with video goggles and "head tracking" devices creates a truly immersive, first-person experience, as if the pilot was actually sitting in the cockpit of the RC aircraft.Receiving equipment-commonly referred to as the "Ground Station"-generally consists of an analog video receiver (matching the frequency of the transmitter on board the aircraft) and a viewing device. More complex Ground Stations often include a means to record the received image along with more sophisticated antennas for achieving greater range and clarity.

IN subdivision opinion ,FPV equipment list including: the carrier aircraft , antenna, video transmitter , video receiver,batteries , image display memory , extended-range remote control , camera and others.

Carrier aircraft

Loading aerial equipment and systems used in aircraft.

Flight Control

Automatic flight when the aircraft is made by a computer -controlled automatic setting program intelligent flight .

Camera and Glasses

The most important parts of FPV, it is the necessary part to take the first view to the player.

FPV Battery

It is the necessary energy to make the machine run and fly , of course, when selecting the corresponding models of battery ,we need to consider its rate , weight, capacity , etc., which will affect more or less FPV flight time and the results.

FPV is a flied that aims more to the feeling of exciting and competition,most of the players like to make their FPV by themselves (DIY),but as we all know all the things can be made by themselves only except the batteries,which leads us to do more to adapt to the change of the FPV making trends.Nowadays,more and more people like to make their machine lighter,so the popular batteries tends to the lighter ones,such as from the 2300mah battery to the 3s 1300mah lipo battery,or even smaller one.

Antenna

The need for real-time control model aircraft aircraft , in addition to the direct signal is received by the radio characteristics of any way other than to improve the distance is not reliable, even though the long-wave wave diffraction ability, still constrained by the space environment , it is instability

Cradle Head

A photographic aerial photography or photographic connecting means adaptation . That camera or video camera and tripod connected devices.
Source:http://www.genstattu.com/blog/what-is-the-basic-fpv-equipment-list/

The LIPO Battery is heart of UAV

The full name of the battery used in the aerial photography is called Li-polymer battery (also known as high molecule lithium battery) and Li-battery for short. Li-polymer battery is a new-type battery and has the obvious advantage of high density, small size, ultrathin, light weight, high safety, low cost and so forth. These years, the aerial photography, using UAVs,the UAV Battery comes to the public. Its irregular shooting perspectives, convenient operations and simple structure have gain the applause countlessly from video creation organizations, and even this technology has stepped into the ordinary families.

At present, the mainstream of UAVs aerial photography are multi-rotor, helicopter and fixed-wing. According to their structure, the fixed-wing can fly for long time, but the fixed-wing demand highly skill of taking off and landing on. It could only be used in the mapping and other fields which do not require high image quality, since it cannot hover in the air. However, although the multi-rotor and helicopter have comparatively short flight time, as the most types of aircraft in the video creation, they can take off and land on the complex terrain, fly stably, hover, strong ability of wind resistance, be easy to operate. These two types of aircraft mainly use the battery to provide power, and helicopter can use the gasoline-drive engine as well. But people reduce the use frequency of gasoline-driven engine due to the mechanical vibrate and the more flight risk. Naturally, the usage of battery spreads widely in the UAVs photography. A team prepares at least tens of any sort of batteries. The batteries provide power tirelessly for the motor, electric regulator, flight control, OSD, image transmission, receiver, remoter, controller and other electric parts of the aircraft. In order to fly well and safe and shoot successfully, it is reasonable to know the parametric of battery, usage, maintenance, charge and discharge and so forth. And now, let us know more about the battery, the crucial part of aerial photography.

From its shape, Li-polymer battery has the characterization of ultrathin, which could meet the need of any product, produced into any shape and any capacity. The external package is made of aluminum plastic. Being different from the metal case of liquid li-battery, the internal quality problem can be presented in time from the distortion of the package, such as bulging.

Let us move to the basic parametric of battery. Take 22.2V 10000mah rc lipo battery as an example; six Li-cells, which has the rated voltage of 3.7V, capacity of 10000mah, are put in series to form the battery. In other words, the 6S1P and 6S2P battery is formed of 12 5000mah lipo battery in series and in parallel. To be more specific, 6S1P is more safe than the 6S2P, because the 1P has more simple structure than 2P and more expensive.

Among the Li-battery of model, the rated voltage of single cell is 3.7V, which is gained from the average working voltage. The actual voltage of single Li-cell is 2.75-4.2V. The capacity labelled on the Li-battery is the voltage which discharges from 4.2V to 2.75V. Li-battery should be used in the range from 2.75V to 4.2V. If the voltage is below 2.75V, the battery is recognized as over-discharged, and the chemical liquid inside will crystallize. The crystallization may puncture the inside structure layer and cause short circuit, even change the voltage of Li-battery to zero. During charging, it is deemed as over-charged if the voltage of single cell is above 4.2V. The inside chemical reaction is too much fierce, and the Li-battery would bulge and then burn if charge continuously. Therefore, it is a must to use the formal chargers which conforms with the safety standard. Besides, self-refit is prohibited since this may cause serious consequence.

Cautions: Do not use the single cell of aerial photography power battery to 2.75V, because this battery cannot provide the effective battery to aircraft. To guarantee the safe flight, the single warning voltage can be set as 3.6V. If reaching or being close to this voltage, the pilot must return or land to avoid the explosion as possible due to the insufficiency of voltage.

Till now, there are numerous brands and sorts of Li-battery for model, we should match and find the battery according to the need of power, so that the electrical elements can run successfully. Please do not buy the unqualified and cheap battery, do not buy the cell and make the battery on your own, and do not refit the battery. If the battery bulges, breaks, cannot be fully charged and any other problems, please stop using at once. Although the 14.8v lipo battery is the consumable, it provides the power for the flight. It should take time to attach importance to it, know more about it, take good care of it, and then the UAV battery can provide and guarantee our every flight task better and safer.
Source: http://www.genstattu.com/blog/the-lipo-battery-is-heart-of-uav/

Lipo battery overcharge is the enemy of the rechargeable battery

Accident caused by Lipo battery itself is extremely low. The 26th International Battery Seminar & Exhibit, held in March 2009 in Florida , Sandia National Laboratories announced the probability of accidents caused by the battery itself in less than 1ppm. Engaged in battery safety measures U.S. TIAX LLC said the probability of accidents in between 0.2 ~ 0.5ppm, exceeding the quality administrative limit "Six Sigma". Probability of 1ppm is very low and it can be called a rare phenomenon. The probability of dying by lightning in the United States is about 1ppm within a year. In Japan probability of getting lottery jackpot is 0.1ppm. That is to say probability of accidents caused by their own defects of lipo battery probability is slightly higher than a jackpot, the same as death by lightning. This is because multiple safety measures have been taken for the lipo 3s voltage lipo battery.
However, the probability of accidents of lipo battery is much higher than the number of ppm level. This is because most accidents are not caused by a defect of the battery itself, but external factors. In the aforementioned Institute, SNL represented the vast majority of the cause of the accident is extrusion, heating, overcharge and so on.
In fact, few people know these situations. Until now, the main reason for many accidents also views as the flaws of cell itself. Japan Battery Industry Association recently proposed test method to test whether the metal sheet into the battery would threat security of battery. The specific method is to insert metal sheet in the element of battery after winding it. We investigated whether heat, smoke, fire and so on would happen through the loading pressure to force the metal sheet and caused internal short circuit. This is because there is an allegation that "in the manufacturing process lipo battery mixed metal sheet will become an internal short circuit fuse, eventually lead to the accident."

Most accidents from improper use of the lipo battery

Most manufacturers have implemented essentially same test. The representative is Penetrating with nail after charging called penetrating battery with nail .On this basis, if the battery mixed with metal and other impurities, causing weak internal short-circuit, it should be able to be filtered through aging tests. That means the possibility of defective batteries as commodities into the market is very low. It is doubtful that the test proposed by Test Battery Industry is in fact repeating the same test.
Of course, there is no internal short circuit even when manufactured but during the process of using it the battery is also entirely possible getting internal short circuit. We assume that during the time of charging the cell electrode generate dendritic metal, causing an internal short circuit. The main reason for this failure is twofold.
Now, during the process of manufacturing, measures have been taken to completely remove moisture. Such as a drying for a variety of materials. The most important step is to dry the negative carbon which is easily to absorb water. Let the electrolyte through dehydration column to remove trace moisture. And the manufacturing need to be set at a dew point of -60 to -40 in drying chamber. For insurance purposes, after winding elements of battery. It will be dried again in a vacuum dryer.
Taking comprehensive countermeasures means that even the slightest error in the process of manufacturing can cause the battery itself as the major cause of accidents. Therefore, lipo battery manufacturers must bear in mind, it does not allow a trace of slack in the process of battery manufacturing.
However, no matter what battery manufacturers do carefully in the manufacturing process to increase security, users do not use it correctly, accidents will not be prevented. Like SNL and TIAX pointed out, compared with battery itself defect, the possibility of external factors causing the accident is much greater.

lipo battery overcharge is the enemy of the rechargeable battery

What is the correct way to use of batteries? The most important is to avoid overcharging. Trace overcharge may also cause smoke or fire and other accidents. For example, FUJITSU TECHNO RESEARCH has done experiments conducted on batteries under 4.25V and 4.30V voltage. charge the battery and do "squeeze test" and "wearing nail test". The results, 4.25V charging lipo battery is no problems while the 4.30V charging 7.4v lipo battery appeared smoke and fire. The difference between a mere 50mV, there is likely to lead to a major accident.
Gensace &Tattu battery Official Online Shop: http://www.genstattu.com

Instruction of Lipo Battery For FPV

Thank you for using Gens ace&Tattu FPV battery. To avoid the unnecessary lost, please read the instruction of lipo battery for FPV carefully before using the product,.

Lipo Battery For FPV Attentions

a)When you get this product, please check whether there is abrasion, break, distortion and any other sort of phenomenon;
b)Please use small current (0.5C is recommended) to discharge the power on your charger more than twice before using this product (The common chargers for FPV all have this function.);
c)Please guarantee that the charger is qualified before using this product (The charger would be some problems to varying degrees after long-time usage.);
d)Please guarantee that there should be someone around whencharging the product. If there is abnormality, please stop charging; if there is nobody, the battery should be taken out in order to avoid the unexpected danger and lost;
e)Turning on the timer on the FPV remoter is strongly recommended. If the product can use for 5 mins, we suggest to set the time for 4 mins to ensure that the battery would not be over-discharged and to ensure the lifespan and safety (the safety voltage for batteries product);
f)The temperature of the product is comparatively high after releasing power. Please wait for the battery cool down to room temperature and then charge the battery (charge above zero centigrade);
g)Please do not store or charge the battery product under sunshine, because the high temperature (above 35 degree centigrade) will cause the product damage or negatively influence the performance;eg:Tattu 2s 7.4v lipo battery use the Professional laboratory to storage it.
h)Please avoid storing the product under full power. The internal chemical reaction inside the full-power lithium battery is very active.Keeping the battery fully charged, although the voltage would not lower, the actual chemical reaction will become slow and the platform for releasing the power declines, so the performance of the lithium battery is not so good as before. (Just like a rubber ring, if it is highly tight for a long time, the elasticity will be influenced.) Therefore, the fully-charged lithium battery is better used in 24 hours. The voltage should be kept in 3.7-3.9V when not in use for long.
i)Please do not exert external force to the product, let it fall from high, self-disassemble and self-refit;
j)Please do not short out the wires of anode and cathode without the drain plug, to avoid accident;
k)Please place the product away from the children;
l)Please place the product away from the water and fire source;
m) Please hold the product correctly (as the picture below);

Lipo Battery For FPV Storage and disposal method

a)When you store the product over three months, please charge and discharge the power in low current (0.5C) more than once;

b)When there is voltage difference in every single product in the product test, please deal with it according to the storage period as listed below;

c)When you find the bulging of the product, please stop using the product, since the bulging will influence the normal usage and have certain danger; the bulged product could not be disposed in cold storage or pricked and deflate. This method would have bulging when the product discharges power. The product can be used in slight bulging carefully, but please stop using if the product bulges seriously.

d)The storage temperature for lithium battery is 25±10 degree centigrade, and 25 degree centigrade is in common. The short-term storage can be below 45 degree centigrade.
Thank for reading the instruction of lipo battery for FPV,and thanks again you use Gens ace &Tattu FPV battery.Enjoy!
Source: http://www.genstattu.com/blog/instruction-of-high-rate-battery-for-model/

How To Extend Your Drone Battery Lifespan?

With the high science and technology development, the price of drone is lower and lower but it’s more and more advanced. However, there is a big problem-battery lifespan all hobbists face when flying drones. To all the batteries and drones manufacturers surprised, the short lifespan problems caused mostly by the pilots careless and ignorant management, and have no idea about how to protect and extend the batteries lifespan.

Then how to extend your drones battery lifespan? Here we go:

TIP 1: Never overcharge your battery

Lipos (the types of batteries on most drones) are serious business. They are highly volatile, prone to damage and can cause fires. Despite highly responsible ownership, a lipo battery is still thought to be the cause of a fire that burned down an RC shop in San Diego, and numerous videos show other accidents involving lips. And fire caused when they are charging without paying attention to its charge state.If you let them alone to charge for a long time, it’s likely that they can explode and result in a fire. The first stages of overcharging will cause your battery to puff up, become swollen or otherwise misshapen. If your battery appears puffy, responsibly dispose of the battery immediately.
So overcharging is potentially dangerous, and also do harm to your drone battery life extremely. So never over charge them till spontaneously ignited, then all things will get terribly horrible.

TIP 2: Charge your battery in time

You can’t let your battery drain automatically without any care and charge your drone’s battery right before you’re about to use it. It can ruin your battery when has empty capacity for a long time. So even you won’t use them for a long time, you need to charge them periodically. But don’t fully charge the battery. Instead, charge it only 60% of the way and store it in a safe place. Then, when you’re ready to fly, finish charging it to maximum capacity.

At the same time, you need to get a good charger which fit your battery a lot. Charge times tend to be relative to the capacity of the battery. You can shorten charge time by using a charger with a higher output, which is indicated by amps. For example, the DJI Phantom 2 charger is 2 amps and it will take 1h to 1.5h to charge the battery. Using an aftermarket charger that charges at 6 amps would cut down the charge time by over half. Proceed with caution when charging your drone battery.

TIP 3: Get seperated drone battery

This tip why it’s better to get seperated battery for your drones is because that even one battery damaged or worn, it doesn’t have an impact on the other batteries. Then it will reduce losses cost and protect your drones better. This will in other way to extend your battery lifespan. Obviously that many drone makers including DJI and Yuneec have recently started using seperated “Smart Batteries” for their drones, which can not only meaning every battery is respectively seperated, but also display remaining battery capacity. Additionally, power management is handled internally so the battery doesn’t require a separate balance lead to control charging. Tattu Smart battery is highly recommended to you.

Tip 4: Choose a larger capacity battery

Most drones will equipped with a lower or mid capacity battery to reduce the cost in that drone. These batteries usually do not offer a long flight time or are made up of good high quality rechargeable cells. So we recommend to go at least the next higher or two steps up in capacity in your drone than what was supplied originally. However one thing to keep in mind here is to pay attention to the weight of the battery and make sure to not add to much weight.

Tip 5: Reduce the whole drone’s weight

You can install the camera to the drone when it is needed. If you are just flying your drone to enjoy it and not trying to capture any video then leave the camera off. The camera will not only add more weight but it also drains the battery due to it needing to be powered to run. And the reducing weight will reduce the harm when drones fall down.
The above tips for protecting battery life and drones are very important to us, or the battery is easily damage or dead in a short time. And buy a good quality brand like Tattu(14.8v lipo battery), Bonka or Turnigy is very important to have a longer lifespan.

Consider You To Insight Into the UAV Terms

Are you currently occasionally truly feel puzzled when see some good nouns about UAV? Do you actually get what they imply at some point? Now we'll take some pretty regular UAV terms to explain and fully grasp them deeply.

UAS

The phrase UAS(unmanned aircraft process)includes the drone and any ground and remote programs which can be utilized to control the flight in the vehicle which include software programming.

Drone/UAV

A drone or perhaps a UAV(UAV BATTERY),which stands for Unmanned Aerial Automobile,can be created from the form of the helicopter,an airplane,or multirotor.So,by well-liked terminology, any automobile that flies and doesn't possess a pilot inside the cockpit manually steering it would be a drone.It may very well be managed by a human by way of a remote or by pre-programmed laptop application.tend to be favored for missions which might be too"dull, dirty or dangerous"for manned aircraft.They have and are mostly found in military and unique operation applications. Even though,UAVs are increasingly discovering utilizes in civil and recreational applications,this kind of as policing and surveillance, aerial filming,and drone racing.Often,UAV is the very same meaning as drone.

Helicopter

A helicopteris a kind of rotorcraft in which lift and thrust are provided by rotors.This allows the helicopter to vertical take-off and landing(VTOL),and also to fly forward,backward,and laterally.These attributes permit helicopters for being employed in congested or isolated places,which suggests that it doesn't have higher requirement on the working spot.It could be controlled by a human by means of a remote or by pre-programmed laptop computer software.

Multirotor

A multirotor or multicopter can be a rotorcraft with a lot more than two rotors.An benefit of multirotor aircraft would be the easier rotor mechanics demanded for flight manage. Contrary to single- and double-rotor helicopters which use complicated variable pitch rotors whose pitch varies because the blade rotates for flight stability and management,multirotors usually use fixed-pitch blades;manage of vehicle movement is accomplished by various the relative pace of every rotor to change the thrust and torque developed by just about every.

As a result of their ease of the two development and manage,multirotor aircraft are commonly made use of in radio management aircraftand UAV projects in which the names tricopter, quadcopter,hexacopter and octocopter are frequently used to refer to 3-, 4-, 6- and 8-rotor helicopters,respectively.

Fixed Wing Aircraft(Airplane)

A fixed-wing aircraft is definitely an aircraft,such as an aeroplane,which is capable of flight using wings that generate lift induced by the vehicle's forward airspeed and the form with the wings. Fixed-wing aircraft are distinct from rotary-wing aircraft,by which the wings type a rotor mounted on the spinning shaft,through which the wings flap in equivalent manner to a bird.Fixed-wing aircraft's landing and taking-off demands much more open field.

FPV

First-person view (FPV),also called remote-person view (RPV),or just video piloting,can be a method employed to regulate a radio-controlled vehicle from the driver or pilot's view stage. Most frequently it is utilised to pilot a radio-controlled aircraft or other variety of unmanned aerial motor vehicle (UAV).The vehicle is either driven or piloted remotely from a first-person standpoint by means of an onboard camera.When use FPV(FPV battery),the perdon will put on a pair of committed glasses,and people can see the view simultaneously from the camera inside the FPV.
All above UAV I stated are electric but not fuel variety,so they require battery to support for functioning.The battery I choose is gens ace 2s lipo,whose high-quality and service is exceptional.Have a consider,my friend!

How To Reduce The Potential Risk Of Drones?

The low-cost of buying and operating remotely piloted aircraft (drones) for commercial use has opened up a world of opportunity. With drones uses emerging in search and rescue, surveying, crop dusting and even deliveries, accidents, injuries and the potential for lawsuits are bound to follow. Some businesses are beginning to look at opportunities to revolutionize how basic services and dangerous tasks might be performed in the future. However, to revolutionize drones and make it more widely used, solving the potential risk of drones is the first and foremost task.

1. Natural Environment

Drones should avoid flying in complex terrain as far as possible to ensure the safety problem. We can’t fly drones in storm, high temperature and high humidity, rainy, cold or windy days. But on the other hand, many dangerous missions can be only done by drones.Then we need to adjust our mind, after all, the pilot's life is far more important than drone’s.

2. Safety by design

The responsibility of safe drone use does not just fall on the user. Manufacturers have recognised the importance of technology in developing drone safety.

The spareparts like flight control system, motors, prepellers, ESC and esc. Parts made by manufacturers should be in stable quality that they won’t easily broken, spcially in flying. And the drones battery used are supposed to be in good quality and condition, or the drone would drop down once the battery cann’t work and support it. A good 2s 7.4v lipo battery like Tattu,Turnigy with excellent and stable and they are lighter, so they are well recommended here for you.

3. Misoperation

When flying in the sky, drones need to be operated and controlled by pilots on the ground. Cause drones autopilot cannot think, the flying track is completely controlled by command of ground pilots.
To avoid errors caused by accident, on the one hand, the flight control system should be made more intelligent and has alarm function to the wrong operation.On the other hand, pilots should also improve operating level to fly more stable and professional.

4. Reduce the weight

Weight is one of the most effective way to reduce the potential risk of drones. This will come true with the emerging of light-duty and miniaturization of equipments and materials. On the other hand, multirotors equipped with parachute is another good choice to reduce the impact when drones falling.

5.Set no-fly zone

Geo-fencing, is an on-board GPS and mapping system (also known as "cyber fences") which prevents drones from flying into restricted airspace. There is a recognised need at the European Commission to encourage investment in technologies that are required to integrate drones into the aviation systems covering European airspace.

As long as no flying in the densely populated areas, a drone’s crash won't cause a severe damage to human. But in the densely populated area, the negative impact of drone’s crash will increase greatly. Without special approval, drones should not be flying in the densely populated are which will result in life risks. In addition, in the sparsely area, pilots can send massage to surrounding people to improve safety coefficient.

To improve drones’ safety and efficiency is the first step for more widely and variety used in many areas, so it requires manufacturers and hobbists effort together. Keep in mind the above 5 points, we will fly and enjoy our hobby in a more pleasant and safely environment.
Socrce: http://www.genstattu.com/blog/how-to-reduce-the-potential-risk-of-drones/

Do you want to know more things about UAVs?

With the development of Dji and X-zero, we can buy a aerial device at the price of thousand dollars which sold at least ten thousand each one. But as more and more teams enter into the market, identical function and appearance can not satisfy consumers. So the price is the major element to attract consumers.

UAV control is a technology activity. It is easily influenced by environment. Although the UAV at the mid-high level is equipped with automatic return function it still does not apply to a complex environment because of their accuracy and reaction. Moreover it is too complex for shooting when you are control ling the aircraft.

In fact, there are many areas of UAV capabilities need to be explored. Follow us GREPOW(5000mah lipo battery) to predict the new features of the UAV in the feature according to the products and technology existed.

Four axises + fixed wing aircraft = Deformable structure?

It is reported by Geeks Park a deformable UAV designed by Tesla who comes from British. The biggest bright spot of the UAV is it can meet the requirements of different shooting through its deformation. There are two different flight postures of aircrafts. When they need stability it will shoot like a "helicopter". If you need high speed with the film it will fly immediately through becoming "tiltrotor aircraft".

Similarly, in an interviewing with Geeks park a domestic professional aerial equipment manufacturing company, the company's CEO also pointed out that the four-axis aircraft flight is with few flying postures, low speed and easily to be influenced by crosswind because of the monolithic construction. But the fixed wing aircraft could remain stable under high-speed flight. If the " Variable type " is introduced to UAVs the environment of them could be expanded with increasing speed and high safety.

However, because the operator can not view flight environment in time the safety of a flying UAV is not able to be improved from the consideration of structure or even may have crashed. If you want to avoid impact of the external accidents The UAV should designed with the function of avoiding obstacles by itself.

Avoiding obstacle and following with the film

Dji has released its next-generation UAV conceptual model called Phantom X it has the functions of following with the film, controlling an array of unmanned aerial vehicles with a mobile device. If you want the UAVs to fly following with the film or do a Array flight, there must be a certain autonomous founctions as obstacle avoidance and distance detection which also can be a judgement to define the UAVs.

“So many people in the production of unmanned aerial vehicles, but do not know how to prevent these things which can lead us to fall into trouble. " said doctoral Andrew, “Laser radar mounted on drones and establish the flight path in advance is unrealistic. If we want the UAV to fly at a high speed. We need better and faster need to algorith ms." Andrew Barry team let each UAV fly 10 meters and draw the next section of the route without considerating the flying of the following 10 meters.

New Exploration of aerial mode

In addition to aerial and follower function with the film, with the development of panoramic camera and VR technology, unmanned aerial vehicles in the shooting mode will have some breakthrough.

Geeks Park, at a venture exchange, was also experienced drones racing team combined VR and UAV. Compared to ordinary racing machine, vision provided by VR is more extensive. But if you fly it at high speed it will definitely affect the bit rate of the return video thus affecting the image quality at the receiving end. If you want to solve this problem a more stable and efficient wireless communication should be established with the input device. Currently, wireless transmission scheme used by the majority of drones. It supports data transfer of 4M bps, and can be effectively against harmonic interference. But the maximum bit rate can only support 720P and can not meet the public demand.

The biggest problem is to prolong the flying time

Through a series of products’ experience and the recent exposure of a variety of news the development of the future UAV is clearly. Overall UAVs are accelerating the pace of its development in structural, technical, aerial mode and so on. But it still has a critical problem to be solved – the flying time.
Currently lithium batteries are very popular in Civil UAVs, but the small volume of a single lithium-driven UAV flight the longest flying time is no longer than half an hour. And the time would be shorter if you want to ensure the difficult shooting not to mention the cutting-edge features such as panoramic camera and following automatically .

Two aspects we need to considerate when comes to the ability of UAV to keep flying. "power" and "Battery capacity" .To reduce power consumption, it is bound to make a considerable compromise on features, configurations. If you want UAV to be able to do more things the power consumption will be increasing. The four rotors of quadcopter and aerial itself are the major parts for power consumption so UAV battery capacity has to be increased but the overall size of which in turn will affect the UAV. We can say that the UAV can not be a breakthrough if there is no a term of battery matching them.

Source: http://www.genstattu.com/blog/do-you-want-to-know-more-things-about-uavs/

Intelligence of UAV lipo Batteries

In terms of a business perspective pattern , UAV lipo batteries intelligence , is a good direction and forms. Conversely , this form also makes a more profitable business model potential. Around us , the smart lithium battery is everywhere, notebook computers, mobile phones , and many mobile devices, have adopted smart lithium battery. UAV power lithium battery , it is the transition to smart lithium .

1.Solve over discharge problems spawned smart batteries

For non- disposable batteries, namely rechargeable batteries, over-discharge is the most annoying thing . Over-discharge means that the battery performance degradation. To avoid over- discharging the battery pack in the people has increased by over- discharge protection circuit , when the discharge voltage drops below a preset voltage, battery -powered stop outside . However, the actual situation is even more complicated , such as laptops , unmanned aerial vehicles , electric vehicles, because if you avoid battery discharge immediately stop power supply , then the computer will immediately shut down, too late to save a lot of data ; unmanned aerial vehicles, will direct fall from the sky ; electric vehicles will be anchored in without warning . Thus , the smart battery discharge battery protect themselves off just the last line of defense , before that , managing circuit also calculates the end of life, to provide early warning for the user , so the user has enough time to take appropriate safety measures .
Life time calculation and distance flown , the flight altitude , the current motor output power and other factors. These factors are dynamic, and the range of changes can be large , all the data needed to calculate in real time , which for the smart lithium battery management chip , algorithm design will make very high demands .

2.Solve charge and keep problems spawned smart batteries

Nowadays, lithium batteries have been very popular. As we all know , lithium battery charging , there are special requirements . The second is currently a large number of lithium batteries using a multi- core string and form , since the batteries of individual differences , resulting in the charge and discharge can not be 100% balanced , and therefore a perfect charge management circuit is particularly necessary. And this is the smart lithium battery to have the second function - to improve the lithium battery pack charge management , and discharge management .

3.Solve batteries power detection problems spawned smart batteries

Conventional battery voltage to be detected , the need for additional connection detection means , such as a voltmeter , etc. , and this can not be detected in real time during the flight . There is no more convenient and intuitive way to let users know in real time the remaining battery charge and other information we trust? Yeah , which requires battery management circuitry to complete.

4.Solve electrode contacts electrically rot aging problems spawned smart batteries

Maybe you have the impression that when the battery is connected to the moment drone on , plug sparks , accompanied by the sound of ignition . Over time, the reliability of the connection plug is lowered , and will lead to heat the plug , even the air melted. Plug problems caused by aging drone crash cases are not uncommon. To solve this problem , smart lithium battery management circuitry and also play a role .

5.Solve batteries copyright problems spawned smart batteries

Smart lipo batteries get a good copyright protection , on the one hand provide only original lithium battery, the battery can be better guaranteed quality , consistency better, and better reliability theory .

Above five points , the battery management circuit ( smart 14.8v lipo battery management module ) close contact with the original ecological battery together into a common forms of intelligent lithium battery . Smart lithium advantages are many, these " intelligent" to bring users the reliability , ease of use .

Basic common sense of choose RC car batteries

For any RC car, the inevitable need is the batteries, this passage introduces some common knowledge of automotive batteries of mainstream RC car batteries lipo.
The ways to choose and buy a battery is nothing more than a few aspects:Battery type/voltage/capacity/C number/size&shape/discharge plug type


Common battery type: NiCd/NIMh/LiPo/LiFe

NiCd, nickel-cadmium batteries, low cost, low capacity, big pollution, memory effect, can only be found in some cheap suits car now,I do not recommended strongly.
The NiMh, nickel metal hydride batteries, in AA and AAA batteries, NiMh absolutely is the mainstream, but in the remote control model of the battery is not recommended.
LiPo, lithium polymer battery, it is now the mainstream type in the model, using a wide range, full of types various models, is the focus part in this passage to introduce
LiFe, and lithium iron batteries, not too mainstream, generally used in remote control, rarely used as a power of the electric car.

The most extensive LiPo lithium polymer battery in RC car
 

LiPo, full named Lithium Polymer Battery, Lithium Polymer Battery shell for soft package, evolved by Li - ion Lithium ion Battery. Voltage of lithium ion single section is 3.6 V, due to the high active, explosion probability is bigger, so it almost replaced by LiPo , now most of batteries we used in cell phones are LiPo.

Voltage: Nominal voltage of LiPo batteries are 3.7 V, when fully charged, the current mainstream single section batteries are 4.2 V, on the currently model, high-voltage batteries appeared gradually, full charged high-voltage batteries with single section is 4.35 V.

Each cell of 3.7 V call 1 s, but our car with 3.7 V is not enough, the mainstream battery voltage is 7.4 V, then put the lipo 7.4v 5000mah batteries together, increase the voltage.

How many 3.7 V and how many S are put together, the voltage is 3.7 V multiplied by how many S, 2 S for example is 3.7 * 2 = 7.4 V. 3 s is 3.7 * 3 = 11.1 V, and so on.

Lithium-ion batteries also involves encapsulation, when you buy a battery you will see some write 2s1p, some write 2s2p, what is the meaning of this 2 s is said above, 2 s = 3.7 * 2 = 7.4 V, then 2 p?

Due to restrictions, such as technology, volume and cost of each cell capacity is limited, how the simplest way to increase capacity? Is to put two same batteries in parallel, this is the concept of P.

For example 2 batteries in parallel together in 1 3.7 V, call it 2 p; But if use of three batteries in parallel to a 3.7 V, so is the 3 p.

So, 2s2p, can be understood as four same batteries, the two pieces of parallel, then call 1s, and then parallel the other 2 pieces of the other 1 s, put the two 1 s together, become a 2 s, the battery is called 2s2p


Capacity: each cell has its own rated capacity, the higher the capacity, the time can be used the longer, in some cases we will especially selection of small capacity for my weight loss with frame, frame performance of ascension. Small capacity is usually lighter in weight.

Discharge C: is the discharge capacity. C number, the greater the battery can in the short period of time after their own capacity.

1 C, which is inner an hour discharge its own capacity. how many C, how much is a copy of one hour after their own capacity. 60 c for example is 1/60 hours, that is, one minute, after its own capacity. C, the greater the number of cells, and its performance is higher, the more expensive.

Several large batteries for the same car, the difference between a high C and low C in a small battery is: the greater the number, the explosive force, its start with higher speed, the less heating battery after use.

Discharge current: C number can be interpreted as a unit, not current. Current should be understand with capacity. C number multiplied by capacity is the discharge current.

The discharge current of the battery is battery’s ability, but actually, the consumption of the current size is determined by the electric harmonic motor. As long as you buy a bigger current of the battery than you consume electric harmonic motor is well.

Shapes and sizes: as long as player buy the corresponding size and shape according to the requirements.most of LiPo are elongated, but there are some old models is cylindrical, so can only choose nimh electricity or cylindrical capacity low lithium electric model.

Plug type: the mainstream is T plug, tamiya plug, JST plug, XT60 plug, JST plug, banana plug (99% of the 4 mm banana plug and 1% 5 mm banana plug), and other such as oda palace, also have XT90, but relatively fewer.

The choice of the plug, the plug of the power equipment according to oneself to choose corresponding, remember that the mainstream plug is T plug, if you buy the wrong plug, it will cause electrical equipment can't connected to the 3s 11.1v lipo battery.

What Equip Was Used At First Taiwan FPV Racing Competition?

Taiwan ford environmental restoration park host the first ever FPV racing drone contest, this FPV is different from the well known aerial photography UAV. FPV drone is more focus on racing, and is operated by the first-person perspective screen through the OSD Monitor system which is more realistic than a flight simulation flight game. Gens ace here ,brand from a famous LiPo factory will bring us report after the game:

What is FPV?

FPV, full name: First Person View, but generally refers to the FPV that is a first person perspective UAV(UAV battery). And what it differ from the general speaking Aerial Photography UAV (which is more focus on stability and the ability of photographing) is that FPV is more in pursuit of flexibility, speed and flight experience.

FPV is divided into fixed wing and multi-axis vehicle, although the former originated earlier,but the latter gradually began to develop in recent years, foreign countries also started some multi-axis FPV drone racing, although in Taiwan it is not yet universal ,But there are also a lot of amateur players in China, and these lovers gather together to hold the Taiwan’s first FPV drone racing contest.

Competition System

Since it is the first FPV drone racing in China ,so many rules and the system is still in groping, but generally it’s referred to other countries FPV competition regulations. The Competition adopting Circuit, a total of three times bypass, four participants ,they must bypass two main green bars obstacles, and pass through the four limit high arches,if does not get through arch,it will be required to fly again.And then elect the champion through semi and final champion.

The reason why FPVs don’t take off together is to avoid mid-air collision, the second aspect is to avoid radio frequency interference, as some times the FPVs do not response(like just lie on the ground,can’t move), and also remote control device around the site will interfere , for example, frequency interference from remote control cars, remote control vessels.
The game take place at an altitude of about 150M, Mucha - Taiwan Hang environmental restoration Crawford Park, the venue is quite open for the FPV racers to fly with few limit.

Unique gameplay

Before playing FPV, first you need to know that FPV drone players crontrol the FPVs by a first-person perspective of the Monitor (or glasses), instead of looking at the body to control it. Why play like this? It’s because the body of PFV is quite flexible, when carrying around a cone or turning flight, it is difficult to distinguish the state of the fuselage and flight attitude, and therefore it must be a first-person perspective to control the body.

Such feeling is somewhat similar to play first-person perspective flying games, therefore, FPV players in the game are all looking at the screen , a group of people take with a chair each one, and with a display screen set on the grass, the players will watch the screen to concentrate on operating the remote control, it is probably a major feature of the FPV game.

FPV kit

 

Currently FPV players mostly used their own DIY FPVs, in order to fly stable, fast and flexible, specific accessories include: FPV drones, remote control, Monitor, or glasses, FPV battery ,etc. But the cost is not as much high as imagine, single frame need about five thousand, and the cost of remote control and Monitor Level depends, about 20,000 you can play the game,but it’s not enough for these DIY Makers , camping chairs, sunshade ,and the like are also needed.

Notes of aircraft battery check

The problem of go aboard with batteries

1. How many batteries can bring with?

Combined with China's major airlines airport security requirements:

If battery energy is less than 100wh , you can carry two or more batteries without reporting; when 100wh <energy <160wh , you can take only two batteries, and need to delare to the airlines when check-in at the counter , to obtain a license voucher .

If Energy surpass 160wh ,you can’t take it to aircraft; such as: DJI S1000 + which using gens ace & tattu battery , even with the smallest adaptable capacity , 10000mAh battery ,it’s energy is 222wh, far higher than the upper limit of 160wh , can not take it to aircraft. So we recommend it’s better to mail to the destination at least five days in advance .

Please also notice:

The Lithium battery are using metal active material, high temperature spontaneous combustion or a short circuit spontaneous combustion and other accidents may occur during the flight. Therefore, lithium batteries must let go of power befor boarding. And make sure the battery was insulated in advance , Seal the battery positive and negative interface with an insulating rubber.

Remote control can not be checked, what to do?

When checking , the security staff pointed out aircraft remote control contains a lithium battery thus can not be checked, there are two ways:

1>Remove the battery out of the remote control;

2>Please call the big boss who is in charge of the checkpoint, try and explain that the battery of the remote control is a built-in battery and can not be removed,and you can ask him to carry out safety checks to the remote control.

How to count the excess baggage charges?

When the baggage weight exceeds the shipping weight stipulated by the airline (China flights, free shipping weight 20kg per person), you need to pay excess baggage charges.

Excess baggage fee calculation formula:

Excess baggage charge = [total shipping weight (kg) - the number of trips * 20 (kg)] *Adult full price ticket * 1.5%

How to solve the problem that batteries and other equipment can not travel with the team ?

1.Delivery in advance

If the battery energy surpass the transportation standard of the airlines, you can express to the destination in advance.
Be noticed that land transportation for UAV battery is slow(such as Beijing to Dali ,Yunnan the transportation time takes about 5 days), please send in advance and you’d better select a large and reliable courier company.

2.Courier company refuse to accept the battery.

After return from aerial location, it’s better to leave half a day to deal with the battery mail issue.
For small cities, Courier company companies may not do the battery business. In this case, you can try to complaints about the courier companies (note: Complaint to the head office, rather than the local branch), try to tell the staff there that the battery was mailed in accordance with the policy of courier company, Let they mail back the battery in accordance with company policy.
When the complaint reached the local branch from the head office,they will pay more attention to this issue. Even if the express outlets can not receive the battery, the customer service staff will recommend you go to a local heavy goods warehouse to mail battery.

3. The Sender’s information is very important

Before mailing, make sure the sender's address and contact telephone number are correct ,because once there’s problem occur during transportating,and can not pass through security, the battery will be returned to sender.
Mail back the battery from the aerial location is in the same situation. You need to find a local person to act as a Sender , once there’s problem occurs,the battery will return to the sender, no one will lost their 7.4v lipo battery.

4.Borrow or rent battery

You can also contact your local aerial shooting team, if they happen to have the same type aircraft battery, you can borrow or rent from them.
When travel with UAVs , we should have a sense of security , start from details, abide by relevant regulations of the local airport and airlines consciously .

What’s the difference between NI-MH batteries and lipo batteries

Ni-mh batteries A nickel–metal hydride battery, abbreviated NiMH or Ni–MH, is a type of rechargeable battery. The chemical reaction at the positive electrode is similar to that of the nickel–cadmium cell (NiCd), with both using nickel oxyhydroxide (NiOOH). However, the negative electrodes use a hydrogen-absorbing alloy instead of cadmium. A NiMH battery can have two to three times the capacity of an equivalent size NiCd, and its energy density can approach that of a lithium-ion battery.

5000mah lipo 2s Lipo batteries A lithium polymer battery, or more correctly lithium-ion polymer battery (abbreviated variously as LiPo, LIP, Li-poly and others), is a rechargeable battery of lithium-ion technology in a pouch format. Unlike cylindrical and prismatic cells, LiPos come in a soft package or pouch, which makes them lighter but also less rigid.

The designation "lithium polymer" has caused confusion among battery users because it can be interpreted in two ways. Originally, "lithium polymer" represented a developing technology using a polymer electrolyte instead of the more common liquid electrolyte. The result is a "plastic" cell, which theoretically could be thin, flexible, and manufactured in different shapes, without risk of electrolyte leakage. The technology has not been fully developed and commercialized and research is ongoing.

The second meaning appeared after some manufacturers applied the "polymer" designation to lithium-ion cells contained in a non-rigid pouch format. This is currently the most popular use, in which "polymer" refers more to a "polymer casing" (that is, the soft, external container) rather than a "polymer electrolyte". While the design is usually flat, and lightweight, it is not truly a polymer cell, since the electrolyte is still in liquid form, although it may be "plasticized" or "gelled" through a polymer additive.These cells are sometimes designated as "LiPo"; however, from a technological point of view, they are the same as the ones marketed simply as "Li-ion", since the underlying?electrochemistry is the same.

(1) Weight

In each cell of the gens ace 3s lipo battery voltage , the NiMH is 1.2V, while the lithium battery 3.6V, lithium battery voltage is its 3 -fold. The same type of lithium battery weighs lighter than the nickel-metal hydride batteries . We can see that each different weight battery itself , but because of 3.6V lithium battery high voltage, when the output voltage of the same so that a single battery pack can reduce the number of third leaving after forming the battery weight and volume reduction .

(2)Memory effect

NiMH batteries have memory effect . Therefore, regular discharge management is also required. This periodic discharge management belongs to the fuzzy state to be treated , even some without the right knowledge discharge ( or a few times each discharge after discharge are due to different companies vary ) this cumbersome discharge management when using NiMH batteries can not be avoided . Relative lithium batteries because no memory effect, in a very convenient and simple to use . It is completely without regard to how much residual voltage , direct can be charged , the charging time can be reduced naturally .

(3)Self-discharge rate

NiMH batteries from 25 to 35% (January) , lithium batteries from 2 to 5% (May). Thereby obtained , the rate of self-discharge NiMH batteries much higher than lithium .

(4)Charging

Nickel-metal hydride batteries and lithium batteries can not overcharge resistance . Therefore, the nickel-metal hydride battery constant current charging PICKCUT control mode at the highest charging voltage , charging stops continue as the best way of charging . The lithium battery using constant current, constant voltage charging mode is best.

(5)Application

NiMH batteries : consumer electronic products, remote control toys , hybrid vehicles , renewable energy systems ; Lithium Battery: cell phones, laptops, power tools, electric vehicles, backup power lights , small household appliances.

The basic knowledge of Lipo battery

For example: a 3s 11.1v 25c 2200mah lipo battery
3s：three cells in series
11.1V：3.7*3=11.1V
2200mah：the capacity of the battery
25c：the discharge rate

About voltage

3.7V voltage does not mean that when the battery is fully charged, for lithium-ion battery, the general voltage after full voltage reaches 4.2V,so 4.2*3=12.6V for a 3S battery.

Actually,the real voltage of a cell is 2.75~4.2V.the capacity signed on a battery is how much we got when the battery discharges from 4.2V to 2.75V.So all the remote control model aircraft with lithium-ion battery also must be used within the voltage range of 2.75 ~ 4.2V.Once the lithium-ion battery voltage in remote control model aircraft is lower than 3.7V,we called it over discharging(the damage for battery is fatal),It will cause puff phenomenon,chemical liquid inside will has crystalline polamer,and the crystal may penetrate the inner structural layer caused by a short circuit,will also greatly reduce the battery capacity and discharge rate, so that the battery use value greatly reduced.So good habits is the only way to increase battery life!When the lithium-ion battery voltage in remote control model aircraft is higher than 4.2V,we called it over charging.That will cause intense internal chemical reactions.It easily be exploded if you continue to charge the battery.So no matter overcharge and over-discharge of lithium batteries will have a devastating injury.Therefore, we recommend using the safety standards of regular charger to charge the battery while the charger is prohibited unauthorized alterations, which may result in very serious consequences!

About capacity and discharge rate “C”

Battery capacity to mah (mAh) as a unit, discharge rate in units of C.Regarding “C”,for example,1C means with 1C discharge rate,the battery can last work for one hour.

All in all, the smaller of the discharge rate, the longer the battery discharge time.So when you buy a battery,you cannot just check the discharge rate.A small discharge rate battery also may have large discharging than a large rate battery.Because it is also associated with the battery capacity.It means that a bigger discharge rate have a stronger life vitality.The battery in a small discharge rate will be scrapped a few times.

About charging

A.the charging current:charging current is generally located between 0.5-1c.Recommended not to exceed 1 c(it is C not A)

B.the charging voltage:charging voltage shall not exceed the limit voltage (4.20V / single cell).The maximum limit charging voltage is 4.25V for each cell. (Prohibited the use of straight recharge your battery,otherwise may cause overcharge the cells.Users undertake all the consequences due to an error using battery.)

C.temperature of charging:The battery must be charged in prescribed ambient temperature range of product specifications , otherwise the battery vulnerable to damage.
When find the battery surface temperature anomaly (refer to the battery surface temperature exceeds 50 ℃), you should immediately stop charging.

About discharging

A.discharging current:the discharge current must not exceed a predetermined maximum discharge current.Large current discharge capacity will lead to the sharp decline in the battery and cause overheat and swelling.

B.discharging temperature:the battery must be discharged within specifications specified operating temperature range.When the battery surface temperature exceeds 60 ℃, it should suspend use until the battery is cooled to room temperature.

C.over discharging:over discharging the battery will cause devastating damage, so the discharge can not make the best single battery voltage is lower than 3.7V(lipo 3s voltage).

About stock

The battery should be placed in cool storage environment, long-term storage battery (more than 3 months), it is recommended at a temperature of 10-25 ℃ and low temperature non-corrosive gas environments.In the long-term storage,every 3 months ,battery should be charged and discharged for maintaining its activity, and to ensure that the voltage across each cell within the range of 3.85V.

Advises For the New Aircraft Hobbyists

With a growing popularity of RC aircrafts, there are more and more new aircraft hobbyists coming out paying little attention to the safety awareness. There are advises listed below, hoping these advises would do any help to those new hobbyists who are lack of safety awareness. Every hobbyist should have their safety awareness（rc car batteries lipo）.

1. Try to study more knowledge about the flying and to know how it works, the more you know about the flying theories, your flying skills would improve faster and you could fly your aircraft smarter. Huge differences between the hobbyists who have played for a while lie in how much they know about the flying theories.

2. Paying attention to the aircraft no matter when it is flying or landing, stay alert, get prepared for any emergency situations. Don’t even rest easy when you are landing your aircraft, passersby may get hurt by the propellers.

3.Getting more flights or practices makes you a better hobbyist. You may not improve your flying skills for one flight only, but accumulated flights will enrich your flight experience and your understanding for your aircraft.

4.Never overlook the suggestions brought up by the experienced hobbyists when you’re taking a flight. Listen carefully and treat seriously, it would avoid you from some dangers or severe outcomes.

5. Fly your aircraft slower and steadier when you stop the flight for a long time. Focus on every landing and taking off.

6. Check every single device on your aircraft more regularly to ensure a more safety flight. If you feel any abnormal happening on your aircraft, try to land it safely and check at once in case of a flight crash. Besides, more discussions or analyses after every failure flight is necessary to avoid getting your aircraft broken.

7.Always being in a good mood when you are flying your aircraft. Never argue with other hobbyists for any little trifles. You would enjoy a good flight when being happy. You may also fly at your best when you’re in a good body condition. Get a good rest and ready to stop flying your craft when you feel exhausted, depressed or in bad mood. Knowing to control your mood and keep a good body condition will also help for a nice flight.

8. Take the 14.8v lipo battery out of the aircraft when there is no need a flight in case the craft takes off by accident.

Difference between multrotor and fixed wing

We all know that in the UAV field is divided into multi-rotor and fixed-wing , this article will compare the following three aspects:

As for the definiton

A multirotor or multicopter is a rotorcraft with more than two rotors. An advantage of multirotor aircraft is the simpler rotor mechanics required for flight control. Unlike single- and double-rotor helicopters which use complex variable pitch rotors whose pitch varies as the blade rotates for flight stability and control, multirotors often use fixed-pitch blades; control of vehicle motion is achieved by varying the relative speed of each rotor to change the thrust and torque produced by each.

A fixed-wing aircraft is an aircraft, such as an aeroplane, which is capable of flight using wings that generate lift caused by the vehicle's forward airspeed and the shape of the wings. Fixed-wing aircraft are distinct from rotary-wing aircraft, in which the wings form a rotor mounted on a spinning shaft, and ornithopters, in which the wings flap in similar manner to a bird.

As for Dynamic principle

Multirotor and fixed-wing aircraft for the purposes of, in fact, the principle is the same to generate lift, it simply is the differential pressure and air flow up and down the wing shock effect caused by the air flow, but we know that the atmosphere increasing altitude, air density is getting smaller (after all, the existence of gravity) but we know that the atmosphere increasing altitude, the air density is getting smaller (after all, the existence of gravity) but we know that with the atmosphere elevation, the air density is getting smaller (after all, the presence of gravity) so that the larger the reactive force on the rotor, which lift more), but in the case of high altitude, the air density is low, even if the high rotor speed (due to the material strength limit, the so-called pneumatic shock impact, rotor speed is also limited), it is difficult to obtain greater thrust, the aircraft would be difficult to rise. Therefore rotorcraft flight altitude there is a certain limit. Lift fixed-wing flying up and down the main source of air pressure, fly faster compared to the greater lift, of course, he is also affected by aircraft or engine aerodynamic and structural characteristics of the speed increase can not be infinite.

As for power field

Multirotor has more electric motor drivers than the fixed-wing , so they need more capacity battery to provide power such as the

Difference between multrotor and fixed wing

We all know that in the UAV field is divided into multi-rotor and fixed-wing , this article will compare the following three aspects:

As for the definiton

A multirotor or multicopter is a rotorcraft with more than two rotors. An advantage of multirotor aircraft is the simpler rotor mechanics required for flight control. Unlike single- and double-rotor helicopters which use complex variable pitch rotors whose pitch varies as the blade rotates for flight stability and control, multirotors often use fixed-pitch blades; control of vehicle motion is achieved by varying the relative speed of each rotor to change the thrust and torque produced by each.

A fixed-wing aircraft is an aircraft, such as an aeroplane, which is capable of flight using wings that generate lift caused by the vehicle's forward airspeed and the shape of the wings. Fixed-wing aircraft are distinct from rotary-wing aircraft, in which the wings form a rotor mounted on a spinning shaft, and ornithopters, in which the wings flap in similar manner to a bird.

As for Dynamic principle

Multirotor and fixed-wing aircraft for the purposes of, in fact, the principle is the same to generate lift, it simply is the differential pressure and air flow up and down the wing shock effect caused by the air flow, but we know that the atmosphere increasing altitude, air density is getting smaller (after all, the existence of gravity) but we know that the atmosphere increasing altitude, the air density is getting smaller (after all, the existence of gravity) but we know that with the atmosphere elevation, the air density is getting smaller (after all, the presence of gravity) so that the larger the reactive force on the rotor, which lift more), but in the case of high altitude, the air density is low, even if the high rotor speed (due to the material strength limit, the so-called pneumatic shock impact, rotor speed is also limited), it is difficult to obtain greater thrust, the aircraft would be difficult to rise. Therefore rotorcraft flight altitude there is a certain limit. Lift fixed-wing flying up and down the main source of air pressure, fly faster compared to the greater lift, of course, he is also affected by aircraft or engine aerodynamic and structural characteristics of the speed increase can not be infinite.

As for power field

Multirotor has more electric motor drivers than the fixed-wing , so they need more capacity battery to provide power such as the Gens ace 3s lipo batteries of 75C. But increased battery capacity , increase the quality of the aircraft , the aircraft is also a corresponding increase in power configuration , thus leading to the need for greater capacity of the battery can not be so infinite loop , and the lower the number , the more efficient the shaft .Resulting in many power are wasted. Therefore, multi-axis , the flight time and flight distance is limited , carrying equipment is also limited . However, electric wing as long as the rational design , can carry the same equipment, access to multi-axis more than the flight time and distance , but also to a certain height can be unpowered glider . It needs more time , a wide range of flight you can use oil moving fixed-wing and fixed-wing flight speed or some advantage. Like a large variety of military UAVs are now used to perform tasks across continents this mulrotor none（3s lipo voltage）.

However everyone has their own interests ,no matter which type you choose ,just insist doing this and enjoy yourself!
batteries of 75C. But increased battery capacity , increase the quality of the aircraft , the aircraft is also a corresponding increase in power configuration , thus leading to the need for greater capacity of the battery can not be so infinite loop , and the lower the number , the more efficient the shaft .Resulting in many power are wasted. Therefore, multi-axis , the flight time and flight distance is limited , carrying equipment is also limited . However, electric wing as long as the rational design , can carry the same equipment, access to multi-axis more than the flight time and distance , but also to a certain height can be unpowered glider . It needs more time , a wide range of flight you can use oil moving fixed-wing and fixed-wing flight speed or some advantage. Like a large variety of military UAVs are now used to perform tasks across continents this mulrotor none.

However everyone has their own interests ,no matter which type you choose ,just insist doing this and enjoy yourself!