What is FPV and the basic introductory parts of FPV

What is FPV?

FPV is the abbreviation of First Person View, it is a device based on remote control model airplane or remote control cars equipped with wireless camera to transmit images, which can be controlled on the ground.

The basic common parts of FPV are aircraft kits, antenna, video transmitter, video receiver, image display and storage, remote control, camera and others.

FPV basic introductory parts:

1. Battery:

FPV batteries are generally lithium polymer batteries because of its better comprehensive performance, such as large energy density, light weight, resistance to high current. Even though, FPV cannot fly in a long time in flight, most of them can fly about 20-30minutes. Therefore, for more fun when flight, buying several batteries is a good way to deal with this problem. I recommend the Gens ace & Tattu 1300mAh battery and 1050mAh battery for your FPV battery.

2.Charger:

The Li-po battery for UAV is in series which means there are several Li-Po cell connect in series internally, so in order to have every cell charges fully, it's advisable to choose a "Balance Charger".

3.Motor, ESC and flying control system

The motor consists of brush and brushless motor, brushless motor is very common in photography UAVs, which is powerful and quality. The motor will transmit the power from battery to spin itself speedly and then drive propellers spin to fly. And ESC is the controller of motor, it will transmit the signal infomation of flying system to motor current. The current size through motor is the speed size of propellers.

4. OSD and GPS

The UAVs GPS system is also very important, because one-key return, fixed-point and fixed height, hover and other functions depends on it. OSD is also known as figure transmission, it is the most important in FPV. Cause if you want to really have fun, the delay degree OSD is pretty critic.

5.Remote control channel, handlers and unlock

The size of the remote control and handle feeling is not very important, instead whether the remote control button layout reasonable and complex or not. The remote control channel means the up and down (throttle size), left and right, front and back, left spin and right spin. Quadcopter need to have at least 4 channel to fly safely.

6.Propeller

Currently, the most commonly used props are the self-tightening pair opposite props. Pilots can purchase multicoloured self-tightening quality props to make your UAVs look more cool. The UAVs flight follow the principle of physics, whose installation is also two opposite sides. It mainly offsets the rotation thrust of spinning to make UAVs get rid of the earth's gravity and fly in the air.
Source: http://www.genstattu.com/blog/what-is-fpv-and-the-basic-introductory-parts-of-fpv/

what is a quadcopter and to understand the other aircrafts

what is a quadcopter?

Quadcopters are also called multirotors, due to them having 4 or more small rotors instead of one like the traditional helicopter. Some models have more than 4 rotors and are called multirotors. As a general rule, the more rotors a drone has, the stronger and more stable it becomes. This why the more high end professional photography drones have 6 to 8 rotors, but these units are currently thousands of dollars.

How to define aircrafts?

You can find two mostly facets, the definition from the element is the number of the motor, it defines the number of rotor how much N; 2 it truly is rack wing (axis) M, the quantity of that defines the aircraft is M shaft aircraft. We normally of a spacecraft termed M axis N propeller aircraft.

About Tricopter(3-motor)

Tricopter normally has two axis during the plane forward, a shaft within the negative. So your body must seems like T or Y sort. Unfavorable motor modify plane by the rotation in the fixed on the course , tricopter is superior manage, ordinarily also rise quicker, but not drastically. Obviously, when the motor stops operation, so the plane will crash, but this type of model is relatively agile.

About Quadcopter(4-motor)

Quadcopter weight in excess of a tricopter, have been also additional possible to kind, as the quadcopter will not ought to separate to manage the parameters of single motor. They are more secure, along with the flying time is longer,you can carry a high capacity and longer battery,such as Gens ace&Tattu 10000mah battery , quadcopter by reducing the velocity of your two motor to implement the roll, as well as the other two motor can handle the entire from the aircraft.
QuadcopterX(QuadX) or quadcopter (Quad ) has distinctive wingspan, helps make the plane seems to be like an X or maybe.

About Hexcopter and Octocopter(6-moter and 8-moter)

The fundamental design of hexcopter and octocopter are very same. Rotor organized around a central point right into a round shape. There are some model install the rotor in the top rated. Y variety hexcopter looks like a tricopter, but no one in which the parameters with the rotor independent handle. To the contrary, yaw is similar for the four rotor aircraft, by altering the velocity of the motor. Compared with all the independent style and design yaw rotor, such design and style feeling not sensitive in contrast with independent yaw.
Much more rotor enables the vehicle to load better and more secure. Underneath the control on the rotor a lot more aircraft in flight controllers, when one particular or extra on the motor power, still can continue to keep the capability to fly without having crashing. But not surprisingly the total weight of aircraft and its complexity of building and is proportional to your price, along with the number of rotor also need many power supply,also will need more 2s 7.4v Lipo battery to carry.
As a beginner, quadcopter seems to be one of the best introduction to the model. They are easy to set up, and the flight is very stable. But when you start, it is better to ensure that the following two points: as simple as possible, the lighter weight, the better.

Do you already know the various between FPV and aerial photography machine?

For many newbie,they can be normally confounding FPV with aerial photography machine.Which will lead them make an blunder after they gonna purchase new drones.It may very well be wasting money.

Thinking about about this kind of standing, i'd prefer to share with folks that what's the various amongst FPV and aerial photography machine.

Firstly,i wanna allow you to understand that the widespread point of FPV and aerial photography machine is they all install a camera on drone.So in this stage,the drone is just not the key part,and just like a carrier for aerial photography or FPV.

The primarily diverse among FPV(3s 1300mah lipo) and aerial photography machine is they are really pursue distinctive objectives,really.

The aerial photography machine is absolutely diverse towards the typical view.It can be extra magnificent and sublime.Angle,picture high quality and photography techniques would be the essential points for aerial photography.Or,you can say,aerial photography is form of artistic creation by utilizing drones.Moreover,aerial photography also can be used in measurement, survey etc.Although,they are not artistic creation,but in addition for receiving video clips and pics.

People would like have the freely fly feeling within the sky by FPV.The so referred to as PFV total identify is 1st Man or woman View,You may drive your drone,crossing in the jungle,gazing down 1 the earth.In this stage,FPV doesn't have that substantial picture good quality around aerial photography.

While you know in my first point,aerial photography requires very good picture high quality,so the machine ought to use good quality photographic camera tools and secure PTZ.It means that the drones have fantastic weight-carrying means,so that the drones could afford all of the weight on it.For FPV,its photographic procedure is a great deal easy and uncomplicated.It only wants one camera.So,the drone of FPV is smaller sized,generally it uses 240-280 wheelbase.

At the current stage,on the earth industry,we nonetheless don't have finished FPV. Frequently, folks have a tendency to self-packing.

As an required accessories for drones,battery is like the blood to drones.The aerial photography machine wants secure image,as FPV needs swiftly explosive electrical power.Right here i'd wish to introduce one particular famous brand in generating batteries----Gensace/Tattu from Grepow.Tattu is largely for FPV battery,Gensace for UAV and RC vehicles.Like a brand manufacturer,Grepow always stick to only produce superior quality for FPV,UAV,RC automobiles.As being a consequence,Gens ace and Tattu take pleasure in good status throughout the entire world.Thus far,Grepow have established two branches in Dusseldorf Germany Europe and L.A American.As a result Costumers could less difficult buy batteries they need.

Contrast to select different of RC car power

According to the motivation source of RC car, which is divided into two kinds. One for motor drive electric RC car, another for two-stroke air-cooled engine driven oil move RC car, and according to the fuel oil motor car, divided into gasoline car and methanol. We will make simple analysis according to the basic configuration and the advantages and disadvantages of each characteristics of the dynamic, to help beginners have a more intuitive understanding of the different of RC car power.

The first kind:Electric remote control model (Electric Powered), referred to as EP.

Electric RC car

Electric RC cars use lipo battery as power, output power to the motor, through the gear, the power transmission to wheels, a driving force for vehicles.
 
Basic configurations of electric RC car including as follow: the RC car, charger, controller and Gens ace 5000mah lipo battery.
 
Electric RC model car is the best choice for beginners, has the following characteristics:
1. The electric car has small inertia, easy to grasp, when you go on the road, beginners don't need too much set-up like a gasoline.

2. The electric car do well on linear output, the weight is lighter than gasoline, so the traction manipulation is flexible, corner speed higher than that of gasoline, if is the venue for many corners, short straights, laps of the electric car is faster than a gasoline, and the electric car start up speed, speed curve, linear speed is not lose oil.
3. The car don't have to repeat purchases, fuel investment, only need to install the RC car battery can be on the road, being recharged reuse, environmental protection free from contamination.
4. The electric car is not a nuisance, quiet street, don't be afraid to fry them anymore. This is the most significant characteristics of RC car batteries lipo

The second: GP remote control model car(Gas - powered) , hereinafter referred to as GP, block is divided into gasoline car and methanol.

Gasoline RC model car

The structure of GP RC Car is very close to the real car, gasoline vehicles using the two stroke gasoline engine.
The basic configuration of GP RC Car are: car, controller, gasoline, oil, oil pot.

GP RC Car is a beginner's second choice, has the following features:

1. GP RC car has simple structure, high strength of the frame, the damage rate is low, stable performance and easy maintenance.

2. The engine is simpler to set-up, the set range of oil needle is small, for beginners ,you don't have to often emphasis on set-up the vehicle.

Most engines of GP RC car are installed on the central of frame, the vehicle's weight is located in the central after partial, and that are the same as most of the super sports car in the world's center of gravity location , so the manipulation of the GP car is flexible , speed is fast, walking stable.

In the petrol car ratio majority with 1:8 and 1:5. Itself weight and volume is big, the request to walk on the road is no demanding as small proportion car so , what's more, four-wheel can independently suspension and gasoline vehicles, large hydraulic shock absorber, makes the strong ability of block pavement through.

Gasoline engine of a GP remote control car can use avalanche to describe, listened to the blood boiling, frying street tool. Here also remind all beginners must go to special field or unmanned broad areas to play.

Methanol RC model car

Methanol RC model car also use two-stroke air-cooled engine.

Basic configuration of methanol RC model car including: car, controller, synthetic fuels, igniter.

Methanol RC model car is the third choice for beginners, has the following characteristics:

Compared with gasoline, methanol car can do a smaller engine , as a direct result of vehicle size can be smaller. Gasoline vehicle general size for 1:8 and 1:5, and the size of the methanol car can do 1:18 size. Due to the weight an d volume of methanol car are smaller than gasoline vehicles, and higher speed, so the methanol car than gasoline vehicles speed is fast, more violence. Compared to the tram, methanol has more momentum and simulation engine.

Because the oil needle set-up is more complicated, methanol is not only expensive, but also inconvenient to buy and methanol engine life without long life as petrol cars and trams so the recommended novice firstly is trolley and gasoline vehicles, to have certain experience in RC model before thinking of methanol car.
 
Summary: By comparing, I believe you can have a further understanding to choose RC car power, hope everybody can have fun on RC car!
Source: http://www.genstattu.com/blog/contrast-to-select-different-of-rc-car-power/

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/

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/

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.

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.

My inspiration from uav

The unmanned aerial vehicle (uav) is real a hot news now, media editors also in naturally follow suit hype unmanned aerial vehicle (uav). Generally speaking, the news the hype in the two aspects of content: 1, unmanned aerial vehicle (uav) is very cheap, ordinary consumers can buy. 2, unmanned aerial vehicle (uav) is very powerful, it is a legendary weapons, can eliminate the terrorists such as ants.

"I want to fly higher"

The relative height of flight for the performance of the common uav users are not important, for most purposes are fly in low altitude and even "stick", even aerial couldn't fly too high, because you can not see the ground clearly when you fly too high. But the flight altitude for the purpose of the plateau region is a very important parameter.

The air in high altitude is thin, on the one hand, it will drop the efficiency of the propeller ; On the other hand, it will drop the efficiency of power system. The fuel power unmanned aerial vehicle (uav) generally use the naturally aspirated two-stroke engine currently , with the air of the thin air intake reduced efficiency, dynamic nature also will drop at the same time, because the boiling point of pressure drop in gas also drops, to a certain height will boil although in normal temperature.

"I want to fly farther than ever"

The majority of users concerned about the uav flight activities of the radius, this is also a important indicator. But flying range can not bigger as you want, there are two aspects restricting the unmanned aerial vehicle (uav) flight radius : mechanical limit radius with radio control of the plane.

Because of Unmanned aerial vehicle (uav) itself limitation of life, its flight radius is limited. Especially electric rotor, the mission flight time is only about 20 minutes, and then consider the time of land and take off, flight control radius is generally at about 1 km.

Some people think of 3g or 4g mobile network can used to implement similar via "star" effect, but it is a pity that even leaving high price of data traffic, there also have a problem on its feasibility. On the one hand, the planar maps for mobile network is the base station of a circle round the honeycomb, junction signal-blind area,it is obvious during flight; On the other hand, from the three-dimensional space, mobile network based on base station signal tower as the center of umbrella cover down, mobile network signal work well in the earth's surface, even better in the blind area in the air.

“I want to fly longer"

There is no doubt that flight life is a very important index for unmanned aerial vehicle (uav). In many cases, for the mechanical part of unmanned aerial vehicle (uav) itself, the radius of restricting the unmanned aerial vehicle (uav) flight relative height is the most important factor.
normally: no matter for a uav or a man-machine, energy is the main restriction.

For electric uavs, the life of 5000mah lipo battery is even limit. Especially for multiple rotor, due to the response of the motor quickly and easy to control, electric is the ‘Gospel’. But on the other hand electric is an enormous problem that restrict its battery life.

As the carrier of electricity is the 3s 11.1v lipo battery, but the weight of battery is heavy, so the increasing batteries wii not increases the power, but can be seen as a function extremum problems.

"I want to fly no matter rain or shine"

Can uav resist wind?

The resistance of wind for uav is relatively good, because of its low center of gravity and lifting point on the top, even if the wind is big,it also may not be a problem. Windy, of course, the risk will increase , just like if the road is too bad even tanks will afraid of tipping.

Can uav prevent the rain?

Of course not!the electronic equipment of uav, especially of the steering gear, calorific value is big, the better rain-proof the worse heat dissipation. So even the oil helicopters can only fly shortly in the rain,you can fly to return if it rained suddenly but do not try to fly in the rain.

About Newbies Getting Started with Fly Device

Now it’s very common to see many people like remote control aircraft , and there are more and more newbies start with it.So I'd like to give some ideas and suggestions on flight equipment to you, hope it can do some help.

About the budget

When many people talk about remote control aircraft, they talk about" how far it can fly, how high it can fly, and how much of it......” About these questions, I think how much you could spend on an RC aircraft depends on your economic situation:

In the case of without abundant money, it is recommended that you can DIY an aircraft yourself, and DJI is the best choice for beginners. For example, I can fly with APM open source control system to the average effect of the DJI control system,but it requires strong handling ability and secondary development of software ability. If you think it’s too troublesome, you can choose commercial finished-product flight control system. If you want to be engaged in commercial fly tasks, then the first thing to consider is the reliability when selecting the aircraft, and prices is the second thing.

In the context of current price of the aircraft, if you want to play in entertainment level, then you need to prepare at least ￥5000-5000. Don't just look at the price of the aircraft, but pay attention to its incidental consumption, such as batteries, etc.

About Choice of Aircraft

First of all,you need to make it clear that fly as a hobbyist or fly for commercial use? If you just fly for entertainment, there are many choices for you. If it is commercial, then the vital point is the reliability of your aircraft.

Compared to helicopter, multirotor is just easier for starting, as for whether you can fly good or not depends on your own.And reliability, there is no 100% completely reliable device, at this point, you need to fly frequently to improve your own skill, maintenance the device regularly, which can effectively minimize the accident probability.

For what multirotor aircraft you should choose, if you are a hobbyist, I suggest to choose quadcopter, it can fly flexibly, take photos and video, it’s good for fun.If you want to make commercial aircraft photography, then you can decide to choose the devide by what camera you will use and the take-off weight.

About Choice of Remote Control Device

A reliable remote control device is one of the guarantees of your safe flight. You can choose the world's three largest remote control device:Futaba, JR and Sanwa, and these non-mainstream remote control devices Hitec, Graupner are also very reliable.

About Battery and Charger

Now it’s the era of lithium battery, so we don’t talk about the related knowledge about Nicd and NiMH battery at present. Lithium battery is generic terms, the common lithium battery including Lilon battery, LiPo battery 11.1v 2200mah and LiFe batteries.

It’s very common to see LiPo and LiFe battery in the remote control model. For example, the most popular electric cars-TESLA,equipped with more than 7000 pieces 18650 encapsulated Lilon battery. Our aviation model use LiPo batteries most, which has 4 basic parameters:the battery voltage & how many cells, battery capacity, continuous discharge ratio, and charging ratio.

The battery voltage general use "V" as the basic unit, a single LiPo battery’s voltage is 3.7 V, if it is in series connection, then the total voltage of battery pack=single cell’s voltage * series connection cells amount.The series connection cells use”S” as basic unit,for example:6S means 6 cells in series connection,so total 22.2V.

Battery capacity general use"mAh" as the basic unit, a larger capacity battery,its discharge time will correspondingly increase, but volume and weight also increases.

Continuous discharge ratio is used to describe the maximum discharge capacity of a battery, generally use”C” as the basic unit, then the maximum discharge current, the maximum discharge ratio is related with the battery capacity.The calculate method is: discharge current (A) = battery ratio C X [battery capacity (mAh) / 1000 ], such as a piece of battery’s capacity is 5000 mAh, continuous discharge ratio is 45 C, then the battery maximum discharge current is 225 A.

Somebody said: "A device with 25 C batteries can be normal used, but it will burn the ESC when use 35 C batteries", this statement is wrong. The system total current depends on the overall system load and fixed consumption, so it has nothing to do with the battery, the battery parameters only describes the discharge capacity of a battery, but not to say that once you connect the battery, then the battery’s maximum current start output. Therefore, choose a battery depends on the the whole system’s requirement, and match the parameters according to the system’s requirement.

On the market, the battery quality and price is various, here I would recommend our hobbyists choose battery with big brands and high reliable like Gens ace 2s lipo, Hyperion and so on. For myself, I use Gens ace & Tattu batteries, who with high performance, excellent quality and terrific after-service. They are worthy of recommendation,more about batteries:http://www.genstattu.com .

Above are the choose of fly device I recommend, I wish you have a good time.

Four things you need to know to start FPV racing

FPV drone racing has become a very popular activitiy recently worldwide.There are many asks about FPV drone racing. Here I will write a article about some things you need to know to start FPV drone racing.

Start Transmitting Video&Video Camera

There are pretty much options for frequency choice but the most popular one for newbies is 5.8Ghz. It easy to get start an have fun without getting into trouble. 5.8Ghz has many nice channels to choose and you can buy a lot of different FPV related items for this frequency.Most FPV cameras available today are primarily from the video surveillance & security industry and work very as well for FPV due to the small size and good low light capabilities.If you are afraid of soldering or getting your wiring well connected then you can buy a all in one unit. These are video cameras with built in FPV transmitters .

Some famous FPV cameres:RunCam 2 Full HD Camera,SONY CMQ1993X HD Camera,etc

Select Your Video Transmitter

There are a lot of video transmitters available on the market today each with its own frequency,antennas and etc.
You should know not more power is better ,too much power can interfere not only with your gear but your friends signal too if you are flying in with friends. I suggest you start with with 25 to 200mW video transmitter.

And you should know FPV video transmitters are not your 2.4Ghz RC transmitter. They can’t frequency hop. You need to set the video transmitter to a channel and make sure the video receiver are in the same channel. If anyone else if flying FPV you have to make sure you aren't on their channel!

A good antennas is very important

Your FPV system is only as good as your antennas. Most start using what comes with most video transmittersand receivers.a simple omni directional linear polarized whip antenna set which, depending on your frequency, can give very poor performance.

Practice&fly safely

When flying a FPV drone, the pilot sees from the aircraft's perspective, and even not need to look at the FPV drone. So the FPV aircraft can fly well beyond visual range, it’s only limited by the range of the remote control and video transmitter.

Where is it safe to fly FPV? I would hope that most people would agree it’s dangerous that flying over largely populated areas, busy highways, and other areas of high population density,especially for beginners,you should choose a sparsely populated areas.Parking garages and forests are also perfect venue?for drone racing enthusiasts.So first make sure you get a proper FPV and good place to fly,then take someone with you who’s experieced with FPV racing.Do not attempt to fly 2 miles away from yourself, with headtracking, in high winds, near sunset, on your very first FPV flight! That is of course an exaggeration. However, FPV flying is entirely different than line-of-sight flying. You get a completely different perspective, and during your first flights, it is very easy to become disoriented. it takes practice, practice, practice.

Suggestions

I used voltage alarms on my planes and on my goggles. Losing power is not good and neither is ruining a 14.8v lipo battery.Tattu 1300mah 75c 4s ,this is maybe the most popular battery for FPV racing recently.

I suggest you to learn from someone who’s experienced with flying FPV. It will make you learn faster, easier and have more fun.
Fly safely!!This is the first principle!
Have fun!

How should beginners begin FPV racing: DIY or buy a FPV Sets?

FPV drone racing has become a very popular activity recently worldwide.There are many asks about how and where to start FPV drone racing. Here I will write a article on how to start drone racing especially for beginners.
Basically there are two ways you can start FPV drone racing.

1.DIY:Build drones using parts you get at RC shops .
2.Buy a FPV Sets.

1)DIY:

One of fun parts of DIY FPV drones is that you can choose parts of your taste. Here I’ll try to build a FPV Quadcopter for example.

Step 1: Watch the video!

You can watch https://youtu.be/dXdIpJnSBI8

Step 2: What you need?

1.4 motors
2.4 ESC
3.1 RC transmitter and receiver
4.1 Flight controlle
5.1 Lipo battery Tattu 3s 1300mah lipo
6.250 Quadcopter frame
7.Wires
8.Assorted tools

Optional

1.Fpv Camera
2.Fpv transmitter and receiver

Step 3: Frame

Begin by roughly build you frame and attaching motors to the arms of the FPV Frame.
When you finished, the drones should be like the last picture.

Step 4: Solder on ESC

Install the motors to the esc's by soldering them.

Step 5: Programing Flight Controller

Now its time to program the flight controller

Flash the board , and make sure all the settings are correct.

Step 6: Wiring

This is where things might get confusing.
I have added a diagram that helped me when I made my quadcopter.Notice that two wires have been reversed. This switches the motors direction on the quadcopter in order to lift it into the air.

Step 7: Debugging and Testing

Now its time to test and debug the FPV Racing Drone.Using the assorted tools on clean flight, check everything is working

Most important:

1.Reciever
2.Motors
3.Mode

Step 8: Add battery

Now simply plug in your battery and let the flight controller calibrate itself for about a minute.
Battery recommend:Tattu 3s 75c 1300mah lipo

Some tips：

Fly in open fields
Use a FPV Battery Lipo alarm
Be careful

Thats it go and fly your quadcopter!
Here comes another option: Buy almost-ready-to-fly racing drones.

2)Buy professional FPV Sets

While there are pretty much FPV racing drones in the market, I would recommend two famous FPV racing drones.

A,ImmersionRC Vortex

Well-designed ARF racing drones which has two models: 285mm and 250mm sizes. 285mm-sized Vortex has a super light weight body which makes the quad fly quite fast. On the other hand, the 250mm-sized Vortex Pro released recently has more powerful motors with faster flight controller processing speed. Many teams used Vortex Pro at World Drone Prix Dubai, which shows that this quad meets professional requirements.

B,Team BlackSheep Vendetta

Well-known and new ARF racing drone. Clean-and-neatly design with no wires that are visible on Vendetta.

Other than the design, another defference from Vortex is its speed controller capacity that can go with as high as 6 cell batteries. As you are a beginner, you’d better not try batteries higher than 4 cells as these are too powerful for beginners. 3 cell lipo batteries is good for beginners.
Once you get these ARF racing drones, you just need FPV Lipo batteries-Tattu 3s 75c 1300mah lipo, goggles/monitor, controller and RC receiver to start drone racing. I will touch upon how to fly ARF drones in another article.

In conlusion, I would surely recommend FPV Sets to beginners who want to start drone racing immediately.It is really hard to build a quad successfully by yourself as you often end up in a situation where your quad won’t fly at all due to bad soldering, wiring or some other problems.And make sure you get enough batteries.For most FPVs,3s~4S ,1300~22000mAh LiPo battery would be great,like Tattu 3s 75c 1300mah lipo.

It is recommeded to DIY drones by yourself to gain basic knowledge of FPV Racing Drones, which will help you when you need to repair drones,this will save time and money.

You had better to know about the RC battery

More and more RC aircraft enthusiasts, but so many enthusiasts do not comprehend the rc car batteries lipo,which then they use the lipo battery is wrong,and even violation operation. That lead to battery swell,even fire. It is sound so terrible. Now I want to tell you some ways to use the battery. Of course,if you think this ways is wrong, welcome to criticism.

1.At the first time use the lipo battery, you should to charge first, and then use when fully charged. Do not use the partially charge,because it effect the battery life.
2. Charge to choose balance charger. Batteries charging with a few pieces, avoid monolithic battery voltage also other difference is too large, affect the service life of the whole.
3. Avoid the battery over discharge, it is recommended that the battery with low pressure alarm device, reasonable control the time of flight, for the plane leave enough spare capacity, To avoid no electricity caused the RC airplane bombed.A is the first killer of battery life!
4. Battery storage method, 3s 1300mah lipo to store the most appropriate voltage of 3.8 V or so, Do not be filled with storage, full of storage is the direct cause of the battery swells,Because the battery has the power, so the deposit after a period of time to conduct a charge and discharge process, voltage back to the store after store, doesn't charge for a long time. Self-discharge will cause low voltage, battery scrap directly.
5. After bombed, to check the battery have any injury or damage and monolithic voltage is stable or not, if the voltage is stable, normal skin without damage, you can use. But be careful, when charging had better pay more attention to observation, avoid the short circuit heating, even smoke explosion!After the bombing of the battery is not use.
6. Do not disassemble battery by yourself, Welding battery easy to cause overheating, don't match batteries welded together, it is easy to cause monolithic voltage use too fast, effect the battery life.
For the bulge of battery has already happened, Do not to frozen, pressure etc to let its recovery, batteries have taken place in the internal chemical reaction, not by external force can recover, more don't prick the battery with a needle, deflated after the battery is completely had zero voltage slowly in place. That is to say, the battery scrap completely.

How to choose the best Lipo battery for FPV

Does Larger battery allows for longer flight time?
Unfortunately the increase of flight time isn’t proportional to the increase of battery size.As the battery gets larger, the increase in flight time becomes ineffective. Eventually it will reach a point where it just doesn’t gain any more flight time with bigger battery (even lose flight time). This is mainly caused by the weight of the battery. Also note that the heavier your copter gets, the less agile it will be.
There are techniques you can use to help with selecting FPV battery – creating graphs and mathematical model in Excel,
which I found really useful when comparing various products of the same kind. I recently bought some 4S batteries for my FPV quad , like Turnigy Nano 4s batteries and Tattu 4s batteries
I will use these as an example. This technique should be useable for any multicopters, including the 250 mini FPV quad.

List All Batteries and Create Graphs

First, list all the batteries with different capacities, brands of the same cell number. You can include their weight, price, etc in your table. For example I was looking for 4S lipo battery for my FPV and here is the table I created.

Listing batteries and data

From these data, you can create some very interesting and useful graphs, for example I usually do
Density, which is capacity per gram (= capacity / weight)
Value, which is capacity per dollar (= capacity / price)

From the above graphs, if I am only going for best performance and not worry about the price, I would definitely go for 2650mah, 3000mah, or 3300mah FPV batteries.
These graphs tell you some insights into which battery has the highest price/performance ratio, but it doesn’t tell you whether this is the best battery for your RC aircraft, quadcopter or tricopter. To do that, we need to create a mathematical model.

Build Mathematical Model to Estimate Flight Time

By using this model, you will be able to calculate the flight time of any battery. Of course, this is just an estimation, but it will give you an rough idea what battery to go for, and save you from spending too much money and time to try each type.First of all, you need to get one battery first, and collect data using it. Basically the data we need is flight times under different loads. You can collect some other data as well to help you identify what is the max load your FPV can take, for example, the throttle value, current etc.
For example, I used a 3s 2200mah lipo battery, and tested the flight times under different load weight (0g, 110g, 220g, 340g, 405g, 515g – all these weights are physical items I can find in the house that’s why the uneven numbers). This as below is the data I collected from 6 test flights.

I always land the FPV when the voltage alarm beeps, which is when the voltage reaches 3.5V per cell. The column “Actual Capacity Used” is not really needed, but I collect it just to make sure my data is valid. I got that from my charger, when I charge it fully at 4.2V per cell, I know what capacity was used in the previous flight.?I then work out “mah / second”, which is the speed of power consumption, and we can draw a graph from this.

So here is the model. “Cap at 3.5V (86%)” is the effective capacity that can be used during a flight.?I am making an assumption that the voltage drops down to 3.5V when 86% of battery capacity is used. “mah/s” is calculated from the above equation, we can work out the mah/s for each FPV battery, depends on their weight.

And now the estimated flight time is roughly equals to effective capacity divide by mah/s. For example for the 6000mah battery, the effective capacity is 5160mah, and the speed of power consumption is 5.75mah/s, so the flight time would be 898.16 second which is nearly 15 mins.

That’s the analysis I always do when buying FPV batteries. There are a lot of assumptions above, so also do your research on the flight time, ask people for their experience, to verify your theory.

Tips for the model lithium battery store

Model lithium battery has the characteristics of the high capacity,high rate and discharge ability strong,and has been widely used by more and more model race enthusiasts.because of this characteristic,the model battery storage will need certain conditions and methods,to avoid battery damage.store the model lithium battery,gens ace 2 lipo (TATTU) tips and made some caveats:

1.model lithium battery stored voltage

Model lithium battery is general a Li-po battery,the safe use of the lowest voltage is 3.6V,but in order to ensure that the battery will not damage due to excessive discharge,the lowest minimum security value using of 3.7v,the highest charge cut off voltage of 4.2v.The highest voltage, battery energy storage for peak,if maintained for a long time without the use of high voltage, lithium-ion cell drum up, in order to avoid the occurrence of such a situation, the model lithium battery storage voltage control in general 3.7 ~ 3.8V.

2.Lithium battery storage conditions

Model lithium battery storage condition is the most critical temperature and humidity,there can not direct sunlight and high temperature easily lead to explosion or muster;so that,the battery will be stored to avoid light lithium tin or plastic box,if a single model of lithium battery discharge performance is very good, also need to purchase a model lithium battery explosion protection bag, this kind of strengthening bag internal net, can prevent high-energy lithium battery explosion in the event of a leakage model cause harm to other items.

3.using the model lithium batteries after storage

Lithium battery self-discharge is very small, when stored models of lithium batteries don't need to be activated,usually when restart, can be directly connected to the charger power charger. but in order to be sure, every time before restart, had better use multimeter measure the total voltage of model lithium-ion batteries, lithium battery storage for a long time,voltage may be lower, at about 3.6V（2s 7.4v lipo battery） are safe.

Serial or Parallel connection for your RC models/Drones

Many of you want to increase your RC models/Drones speed or playing time ,and find a way to increase the voltage or capacity.Exactly,through connecting several cells in series,battery packs achieve the desired operating voltage.Each cell adds its voltage to the total terminal voltage.Parallel connection attains higher capacity and the same as current handling.Each cell adds to the ampere/hour (Mah) count.

Serial Connection

One battery’s positive connects the next battery’s negative and all connect like this.In this way,the voltage increases,but the capacity unchanged.That is to say, the total voltage is the sum of all series batteries voltage.

Connecting a pair of 1s, 3.7v, 5000Mah LiPo's in series:

This will increase the VOLTAGE x 2,but the capacity will remain the same for a result of 7.4v,5000Mah lipo battery.

RC models/Drones needing higher voltages,use battery packs with two or more cells connected in series.The advantage is that you can increase the speed of your RC models/Drones.But high speed for a long time will shorten the battery lifespan,so take care and operate in an appropriate speed.

Parallel Connection

One battery’s positive connect the next battery’s positive and negative connect negative,all connected like this.The voltage is unchanged,but the capacity increases,correspondingly,the current also increases.

If higher currents are needed and larger cells are not available or do not fit the design constraint, one or more cells can be connected in parallel. Most battery chemistries allow parallel configurations with little side effect.The voltage of the illustrated pack remains same, but the capacity increses,current handling and runtime increases too.

Connecting a pair of 1s, 3.7v,5000Mah LiPo's in Parallel:

This will increase the Mahx 2 but the voltage will remain the same for a result of 3.7v, 10000mAh.

Parallel is 3.7v,but you have to based on your RC models’/drones’ norminal power.The voltage is unchanged,but the current is big, after you’ve operated your RC models/drones for a long time,the excess current would shorten the lifespan of your 7.4v lipo battery.So it would do more harm.Please don’t parallel too many cells,keep the current under the norminal current,and you need to change the charger.

If you really want to play them for a longer time,and save you a lot of trouble,you can buy one new battery.The most important thing is that you don't have to change the charger because of the increasing capacity.

Either in serial or in parallel connection, the output power of the battery pack is increased. Parallel Connection is to increase using time,while Serial connection is to increase the speed.

RC lipo battery above discharge and also the good utilization of motive

Some rookies feel that lithium batteries brand improved,ever the greater the price,it is actually improved to work with the longer. But normally not the situation, even the best lithium batteries,over-discharge phenomenon will appear.

How to use the suitable of lithium battery?

Regardless of whether lipo battery 3.7v or 1.2v NiMH,won't suggest voltage once the battery is thoroughly charged.For 2200mah lipo battery, the common after total voltage reaches four.2v,I feel plenty of people have the mobile phone batteries universal charge,it output voltage is generally indicated above four.2v.NiMH full charge can attain 1.5v. Moreover to voltage,and after that there is certainly capability and discharge price.the capacity of your battery in mah,the discharge charge is an unit with C. In brief,1C for distinct capacity battery just isn't exactly the same. 1C discharge signifies that batteries can final for one hour. Illustration: 1500mah capacity battery lasted 1 hour of operate, the typical current is 1500ma, namely one.5A,one.5A and that that is if the battery 1C above the nominal greatest 10C the battery discharge latest is 15A... That is definitely under the battery 15A is harmless to use. Once more 1000mah capacity inside the 1C is 1000ma, namely 1A. When the over nominal 15C. Then the utmost discharge current is 1A * 15 = 15A, the utmost discharge recent of the battery is 15A. Having said that, the above get the job done the batteries 15A, 10C discharge is, in theory, the maximum recent operate employing 60/10 = six minutes . And 1000mah get the job done to 15A, 15C is discharged for the recent theory may be used to get the job done 60/15 = 4 minutes. So rather speaking, 1500mah, 10C battery to become used for a extended time factors. So invest in the battery by looking at the quantity of C just isn't acceptable. C compact variety of discharged battery may discharge a big quantity greater than C. Related with this particular capacity.

Remote manage model aircraft lithium battery termed the lithium polymer battery, typically referred to as lithium or lithium batteries. I've to 11.1V lithium battery remote manage model aircraft as an example to illustrate tips on how to correctly use lithium battery. Generally, 11.1V lithium battery of remote control model aircraft by 3 lithium batteries in series (3S1P), per piece batteries voltage is three.7V. The lithium model, cell phones, cameras, and so on. The nominal voltage is named marking voltage is obtained from your typical working voltage. The actual voltage monolithic lithium batteries is 2.75~4.2V, lithium within the topic of electrical power capacity of 4.2V to 2.75V discharge obtained. Remote handle model aircraft lithium batteries need to be made use of inside the voltage selection of two.75~4.2V. The remote management model aircraft lithium battery voltage is lower than 2.75V belongs excessive discharge, lithium expands, chemical liquids within crystallize, these crystals may pierce the internal framework with the layer caused by a short circuit, make the lithium voltage turns into zero. Remote control model aircraft lithium battery voltage is over 4.2V belong overcharging, inner chemical reactions also intense, lithium will blow expansion, if it continues to swell charge combustion. Whether or not it really is above discharge or overcharge can have remote manage model aircraft lithium batteries produce lots of injury.

1.the charge

1-1 Charging recent: the charging existing should not exceed the specs book stipulated highest charging recent (below usual circumstances is 0.five ~ 1.0C or much less), the use of larger than encouraged charging existing may well lead to the battery charge and discharge performance, mechanical effectiveness and protection performance difficulties and may bring about heat or leakage. At the moment marketed 5C model aircraft battery charging current, charging is just not advisable regular use 5C, so as to not affect battery lifestyle.


1-2 charging voltage: the charging voltage shall not exceed the restrict voltage (gens ace 2s lipo / single cell), four.25V charge voltage of every part of the highest limit. (Non-straight to enrich my understanding, this could result in overcharging the batteries, users use the battery because of an error produced by the consequences).


1-3 Charging temperature: The battery needs to be charged inside of product or service specs prescribed ambient temperature variety, otherwise the battery vulnerable to injury. Once they locate the battery surface temperature anomaly time (refer to your battery surface temperature exceeds 50°C), must straight away stop charging.


1-4 reverse charging: Connect the battery constructive and unfavorable, non-reverse charging. In case the constructive and unfavorable reversed, we'll not have the ability to charge the battery. Reverse charging the battery are going to be destroyed, and even cause fever, leak, fire.

2.discharge

2-1 Discharge current: discharge present may not exceed specifications specified greatest discharge latest, high-current discharge capability will cause the sharp decline inside the battery to overheat and cause swelling.

2-2 Discharge temperature: The battery has to be discharged inside of specs specified working temperature assortment. Once the battery surface temperature exceeds 70??C, to suspend use until finally the battery is cooled to room temperature thus far.

2-3 over-discharge: over-discharge can harm the battery cannot be so single battery discharge voltage is reduced than 3.6V.

3. Storage

The battery should be positioned in awesome storage environment, long-term storage battery (a lot more than 3 months), it is actually advisable at a temperature of 10-25°C and a minimal temperature non-corrosive fuel environments. In the long-term storage battery each 3 months to sustain the battery charge and discharge activity and make sure that every cell voltage 2s lipo battery 5000mah inside the range of 3.7~3.9V.