What is a LiPo Battery ?

A LiPo battery powers all of the electronics, and motors on your drone,. The   difference with LiPo batteries and the ones you would use in your TV remote is the chemicals used in the battery. LiPo batteries are based on Lithium Polymer chemistry (hence the name LiPo) which allow these batteries to have a very high energy density compared to other types of batteries. A battery with a higher energy density will be able to hold more energy compared to another battery of the same weight which is why LiPo batteries are commonly used with R/C aircraft and drones.

There are other types of batteries such as nickel cadmium (NiCad) or nickel–metal hydride (NiMH), however these are seen as older battery technology and are not really used anymore because they are very heavy and dont hold much energy compared to LiPos.

lipo-battery-01

A LiPo battery is constructed from individual cells, where each cell consists of some metal and chemicals packaged together to generate an electrical charge. By connecting these cells together in various ways we are able to make different LiPo batteries with various voltages, and capacities. More on that later on

What the numbers mean

We will now discuss what all of the numbers mean that specify a LiPo battery. This wil help you to know what you are buying and how to choose the correct LiPo for your application.(This is a Gens Ace 2200mAh 3s 25C lipo battery)

gensace-lipo

Number of cells

Determines how many volts the battery will have. 3.7V (nominal) per cell. 1, 2 or 3 cell (or 11.1V) is the most common in beginner planes. (3 cell lipo battery is 3s lipo battery.)

Capacity

How much energy that is stored in the battery. Usually written in milliampere hours or mAh for short.

Milli means a 1000th of. So a 2000mAh battery is the same as a 2Ah battery

If you draw 2 Ampere through that battery it is going to last for 1 hour.

If you draw 1 Ampere it’s going to last 2 hours

If you draw 4 Ampere it’s going to last ½ hour or 30 minutes or 1800 seconds

C Rating

Is how much power the battery delivers without dropping too much in voltage

How many Ampere it can deliver is dependent on the capacity of the battery

To calculate how much it can deliver you take the C rating and multiply it by the capacity rating

If you have a 1000mAh battery and a 20C rating that is 20 times 1 which is 20 ampere.

There are normally 2 different C ratings. One for continuous discharge and one for burst, which means how much it can deliver for a very short time (10 seconds)

More Lipo battery Guide on http://rcfpvplane.com/

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