About LIPO batteries, what is STORAGE MODE? What is a Discharge Rate? , … and What Is Capacity? And how to calculate it?

Lipo Batteries aka Lithium Polymer, also known as LIPOLY, are powerful batteries that are commonly used on RC hobbies and modeling. Large power is of course accompanied by a large current flow. There are dozens or maybe hundreds of different types of brands, types and specifications of lipo batteries. Lipo batteries are the “spoiled” type, which requires extra attention compared to the types of NiCd, NiMh, Pb etc. … because of the wrong handling, it can have fatal consequences, at least bulging and eventually the cell dies

Storage Mode

This function is only on a programmable balance charger, usually there are 4 buttons, then what is the point for? Its usefulness is when we want to rest the lipo battery for a long time, a month more for example …. just plug into the charger, the settings to storage mode, then the battery will be automatically positioned at the safe voltage in each cell (about 3.8volt in each cell). if it’s too full it will be reduced, otherwise if it’s less … then it will be automatically raised to storage voltage. So it’s safe to store. Don’t try to store lipo batteries only in FULL state without storage and for too long, this is very dangerous … because LIPO is sensitive to temperature changes, without us realizing, LIPO which is filled with electricity in each cell suddenly explodes and causes fires … hmm … there’s been a lot of cases. It is not recommended to also keep lipo for a long time in an empty state. (back to point c above)

Discharge Rate

On the battery pack there is usually a C unit written, for example: 25C – 65C … well, then which one can be counted? On this package, how to read it is: 25C which means unit constant / continuous, meaning that when ESC asks for power at constant speed, then the battery drain will be read by ESC of 25C, while when ESC asks for maximum power (BURST), drain capacity the battery was read by ESC, the maximum from the battery provided, which is equal to 65C. For example, for example the total battery capacity is 6000MaH, then we can calculate it in numbers to find out whether the battery we are using is compatible with the ESC installed or not. The calculation is as below …. (calculate the maximum C battery)

The multiplication factor for RC Car is 0.6, while the multiplication factor for RC Plane and Heli is 1.

Example for RC Car: Battery 6000mah 65C = 6.0aH x 65c x 0.6 = 234A, meaning that your LIPO can serve power requests from ESC which has a maximum amperage of 234A.

For example, for RC Plane: Battery 2200mah 25C = 2.2aH x 25C x 1 = 55A, meaning that your LIPO can serve power requests from ESC with a maximum amperage of 55A


If the discharge rate you provide is far above the ESC and motor demand, then your RC is over powered. The effect can cause overheating on the ESC or motorbike, and if forwarded it can damage both or ESC will automatically continue to CUT OFF VOLTAGE for security.

Likewise, if the discharge rate you provide is MUCH below the ESC and motor demand, then your LIPO will be drained, marked when playing … suddenly the car stops for about 5-10 seconds … then it can walk again. ESC will also automatically do CUT OFF VOLTAGE. This also causes the battery to quickly bloat and shorten life and reduce its ability to store energy / electricity.

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