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/

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.

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!

NIMH or Li-Po Battery for My RC Car

Many new RC car beginners get confused about what kind of batteries they should choose for their RC car NIMH or Ni-Po battery? What are the differences between them? As you may hear some questions like “ What kind of RC car batteries should I buy? “ “Can I use LIPO battery for my RC car?”“What are the differences between 6s 7.2v NIMH battery and 2s 7.4v Lipo battery?” So let’s take these batteries as an example and make a comparison between them in several ways.


NIMH, Nickel Metal Hydride, serves as a replacement for NiCd as it has only mild toxic metals and provides higher specific energy.

LIPO, lithium polymer battery, is a rechargeable battery of lithium-ion technology in a pouch format.

Let’s compare these batteries in the following aspects:

Price:

NiMH:It is cheaper than the Lipo battery. You may find the price of an 7.4V Lipo battery could afford two 7.2V NiMH batteries for your rc car.

Lipo: It is more expensive, but as the production scale of Lipo battery gets bigger, the production cost will get lower and lower and so as the price.

Voltage

NiMH: It’s nominal voltage is 1.2v per cell. As we can see from the picture, the common voltages for NiMH battery are 6v, 7.2v, 12v, 14.4v.
Lipo: It’s nominal voltage is 3.7v per cell. So we usually find Lipo batteries in 7.4V, 11.1V, 14.8V, 18.5V, 22.2V.

Weight/size

NiMH: 7.2v NiMH batteries are heavier than 7.4V Lipo batteries for the same capacity. And it’s bigger than the Lipo one.
Lipo: Lighter and smaller than the NiMH one, this makes a great difference for rc cars . That’s why Lipo batteries are getting more and more popular in the RC cars.

Memory effect

NIMH: It has the memory effect. It is commonly believed that when rechargeable batteries are not fully discharged between charge cycles that they remember the shortened cycle and are thus reduced in capacity. Which is also called “voltage depression”.

Lipo: Do not have the memory effect. So the full capacity of the Lipo will always larger than the NIMH one after being used for weeks.

Charge and discharge:

NIMH: It is not that dangerous if it is over discharged or over charged. But over charging or over-discharging will shorten the life span of the NiMH batteries.

Lipo: Can never be over discharged or over charged. Or it will damage the battery, explode, or even get your rc car on fire.

Battery charger

NIMH&Lipo: You have to choose the correct battery chargers for them or use charger that can both charge NiMH and Lipo batteries.

Power&Capacity

NIMH:A nimh battery has a consistently less power as you run it down.

Lipo: Lipo batteries will provide longer and quality run time for its larger capacity and C rates.
To make a conclusion, lipo batteries are better choice for RC cars.

Ways to eradicate the battery memory impact

What's the battery memory result?

If the battery is nickel cadmium battery, long-term will not be complete charge and discharge,it easy to leave a mark within the battery, the battery capability, this phenomenon is called battery memory effect.That mean, it appears that battery memory consumer daily charge and discharge charge as well as mode, time is tough to modify this kind of mode, can no longer do significantly charging or discharging.Lithium-ion batteries, no such result.

The reason behind the battery memory result

Resulting from adverse really sintering form in the traditional system, cadmium coarser grains, if nickel cadmium battery recharge in advance of they may be totally discharge, cadmium grain effortlessly gathered into pieces and produce a 2s 7.4v lipo battery discharge kind secondary discharge platform.

Battery will retailer the discharge platform and it since the finish from the discharge within the subsequent cycle, despite the fact that the capability of the battery itself could be make the battery discharge to your decrease platform.During the procedure of following the discharge of battery will only do not forget that lower capability.Exactly the same in each use, any incomplete discharge will deepen this effect, make the capability with the battery is reduced.

The best way to do away with the battery memory result?

To remove the effect, there are two techniques, 1 will be to use tiny latest depth of discharge (including with 0.one C to 0 v) 1 is to use big latest charge and discharge (e.g., one C) several times.

In practice, the method of elimination of memory results have strict specs and an operating method. Improper operation will be counterproductive.

For nickel cadmium battery, the upkeep of usual is deep discharge on the standard basis: the common use to get a month (or thirty instances circulation) on the deep discharge (discharge to 1.0 V/each section, named the work out), popular use is usually to use photovoltaic cells or make use of the signifies which include shutdown can lower the formation of the memory effect, but this is not training, since the instrument (including cell phone) is not employed 1.0 V/only to flip it off everyday, has to be special gear or line to finish the do the job, but luckily a lot of nickel cadmium battery charger with this particular perform.

For no nickel cadmium 7.4v lipo battery to training for any extended time, as the cumulative memory impact, cannot reply in training capacity, you then will ought to deeper discharge (termed a recondition), this is often an incredibly small present to get a long time for every area to 0.4 V battery discharge of the procedure, want specialist equipment.

For nickel metal hydride batteries, exercise within the frequency of about as soon as each three months can properly alleviate the memory result. Since the cycle daily life of nimh battery is lower than that of nickel cadmium battery, with little recondition this strategy.

Suggestion one: each and every time there is no really need to charge the 14.8v lipo battery just before discharge, and it really is hazardous, for the reason that useless shorten the lifestyle with the battery.

Suggestion two: use a resistor connect would be the cathode with the battery discharge is just not desirable, cannot management recent, easy to 0 v, even result in series of battery cell polarity reversal

How to charge of NiMH rechargeable batteries right

With the rapid development of digital industry,NiMH batteries with the advantage of its benefits,environmental protection is more and more get the favor player and bulk purchases.use also from traditional small household appliances product: lamps,clocks,electric toothbrushes,etc and other widely used to our new products,such as digital camera,electric toys,RC and others.

As people is constantly increasing,the number of NiMH batteries using and maintenance of science is gradually taken seriously by people,As we all know,the brand the service life of NiMH batteries according to the official claimed that can charge up to 1000 times,actually this is an ideal value,often less than this life. But as long as reasonable use charger,more in-depth understanding of NiMH batteries,we will still be able to let her prolong life. Tattu(lipo battery 5000mah) warm prompt the following tips:

Under normal circumstances,the new NiMH batteries contain only a small amount of electricity,when you buy to recharged and then use.But if the battery factory relatively time is shorter,power is adequate,recommended use before recharging.

1.A new NiMH battery generally after 3-4 times of charging and use,in order to play to the best performance.

2.This is very important:although NiMH batteries memory effect is small,still recommend recharging after each use as far possible,and with a full-time,not a charge in a while and then filling in a minute. 

3.When the battery is charging, the charge should pay attention to the heat around the charge,Don’t put to much stuff around,keep the battery clean.This is to avoid the problem such as power loss,keep the contact point at the ends of the battery and battery cover interior clean. 

4.Long time no use it ,remember to remove the batteries from the battery compartment ,put in dry environment recommended in the card battery box,to avoid short circuit. 

5.The NiMH batteries not use in long time can deposit in a few months later, nature into a state of ”dormancy”?batteries,the battery life is reduced greatly. If the NiMH batteries(3s 2200mah lipo) have been placed for a long time ,it is recommended to use the slow charge for charging. 

Battery-The modern life necessity

An electric?battery?is an energy conversion and storage devices?that convert stored chemical energy into electrical energy.?

With the fast developed science and technology, improvement of human living standards, more and more variety of new features, high-tech electronic products are widely used to humans.Correspondingly,it will promote the arising of all kinds of different appearance and performance batteries.

The big brand such as Nanfu battery,GP battery,Panasonic and so on are known by people.Another 2 big brands have attracted worldwide attention with their excellent quality,innovative style and performance-Grepow and ATL.

Shenzhen Grepow Battery Co.,Ltd is a professional R&D,design,manufacture and selling company.From the establishing year 1998,Grepow has changed greatly in its development.
Grepow manufactured and supplied Ni-Mh battery from 1998 in a large quantity with its stable quality,reasonable price and perfect service.It is a kind of no-pollution,no cadmium new green energy battery widely used in areas like civil life,cars,toys, telecommunication and so on. We recommend NiMH for applications where a device has already been designed to use AA type batteries.

This batteries,?however,?have a short?lifespan,heavy,low discharge rate,and low voltage characteristics,so Grepow update to manufacture 2200ml Li-po battery from about 2009.

With a professional R&D team,and extensive experience in manufacturing battery, excellent technical documentation and advanced processing management system,Grepow’s 2 big brand Li-po battery-Gens Ace and Tattu are greatly known and used in RC ans UAV.which ensures battery’s consistency and stability in mass production.

Gens Ace batteries are very useful for embedded electronics. They offer the highest density readily available on the market. Because cell phones predominantly use this battery type, they are easy to find for reasonable prices. They?do?require special charging, so be sure to use the right charger for the job.

Gens Ace LiPo batteries cell has a?nominal voltage of 3.7V. When fully charged you will see nearly 4.2V on the cell but it will quickly drop to 3.7V under normal use. When depleted, the cell will be around 3V. This means your project will need to handle various voltages if you are running directly from a cell. If you need 5V you will need to combine two LiPos in series to create a 7.4V pack（2s 7.4v lipo battery） and regulate down to 5V.

We recommend Gens Ace LiPo for nearly every portable application like helicopter,RC,jump starter and so on.They are fairly robust and when used safely provide a great power source.
DJI-the world market leader in easy-to-fly drones and aerial photography systems,adopts Grepow’s Tattu battery to control its famous UAV.With the advantage of professional R&D, humanized?service,mass production capacity,amzing explosive power,Tattu is widely used by other big brand GoPro,Panasonic,LG and so on.

In the future,Grepow’s Tattu will be used in more fields and Grepow will pay attention and be allergic to more potential development trend and supply better bettery or other amzing products to the world.

What is the "C" Rating on RC Lipo Battery

"C" rating is a rating of how quickly energy can be discharged from a battery. The rating is combined with a battery’s capacity to find determine the maximum discharge. This is very important when you consider battery choices for your RC models, because these machines draw very high amps from the motors and it is easy to choose a battery that can’t handle the currents required by brushless motors and steep-pitched props. This article mainy explains what "C" rating is, “C” calculation and the charging of C Ratings.

The "C" rating of a battery only specifies the amount of current a lipo battery RC can safely provide. So a 1000mah 10C battery can safely provide 10 amps, a 1000mah 20C battery can safely provide 20 amps, etc. However it is the motor and it's propellor that determines the amount of current that will be required. So if a given motor/propellor combination requires 10 amps and you use a battery that can provide 30 amps only 10 amps will flow in the circuit. Increasing the current capacity of the battery will not increase the current in the circuit.

Current in a circuit is determined by the voltage applied and the circuits electrical resistance. The motor/prop combination are the circuits primary resistance. The ESC has some resistance and the battery itself has some resistance. Since you are not changing the motor/prop or the ESC these resistances remain the same. So the only thing that can effect the circuit resistance is the battery. It's resistance is so low as to be negligible. So even if your 25C battery has slightly lower internal resistance a negligible amount of current increase should be seen. Here we can recommend you Gens ace 5000mAh 40C 2S1P 7.4V Lipo Battery Pack, Gens ace rechargeable 2S car lipo battery with high capacity of 5000mAh & high burst power of 40C for 1/8 & 1/10 RC car model such as HSP 1:10, Emaxx,Bandit, Rustler version, HPI Strada XB 1/10 RTR Electric Buggy, Kyosho GP 4WD RACING TRUCK etc.

  

“C” Calculation:

To charge a 2100 mAh Li-Po at 1C or C/1, set the charger to charge at 2.1 Amps (mAh divided by 1000 to get amps). It’s that simple. So a 3200 mAh NiCad that can be charged at 2.1C would be charged at 2 and 1/10th times the battery aH rating (3.2 X 2.1 = 6.72 amps). Likewise, a trickle charge of C/10 for the same battery would be 1/10th of the “C” rating (3.2 / 10 = .32 Amps).

Chargings C Ratings

It is also important to consider C-rating when charging batteries. I always stick to the rule of thumb that you should charge your batteries at no more than 1C even if they are rated for a higher Charge c-rating. Zippy compacts are a good example of a battery that will work great until you start charging it at a high C-rating.

Charging these at a 5C charge rating will rapidly reduce their life because their cells become oxidized. The batteries say on them that they can be charged at a 1-5C rate, but my real life experience says otherwise.

As you can see, We Genstattu are well stocked with a wide variety of products for you to choose from. Every single one of our Lipo batteries packs a massive punch and will give you to days of endless fun. This is why you should not hesitate to get in touch with us today. Order your ideal RC battery and get your craft up and running without wasting another second.

This article comes from: http://www.rc-battery.com/bbs/?p=304