LIPO battery discharge rate
- Thread starter nwmlarge
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Heyitsme
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20c is very low discharge rate unless your using it for brushed motors I would go with higher C rated batteries. Mah and C rate go hand in hand for indication of the available amp discharge rate of a lipo. Example 1000mah x 20c = 20a discharge rate. 2s 5000-5200mah lipos with a higher than 20c rate can be had less than $20 (Zeee, Goldbat etc.)
i_r_beej
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The discharge rate, expressed as "C" has nothing to do with the capacity, expressed as mAh (milli Amp hours). Your run-time will depend on the the power requirements of your electronics: motor, esc, servo, any attached lights or other accessories.
The "C" rating provides information on the continuous current the battery is able to provide during use. Most LiPo batteries can be charged at a 1C rate, with some, more expensive batteries claiming 2C or higher charge rates (but 1C is the safest and best for your battery). The formula @Heyitsme provided is correct. For most non-competition uses 20C is sufficient. The Venom 5000 mAh 20C batteries I have can provide 100 Amps of continuous current which is more than enough for my Circuit truck.
In my ECX Amp truck, with a 5000 mAh LiPo battery and otherwise stock electronics (540 20T brushed motor, 5 volt servo, ESC/Rx) I could drive the truck at almost full throttle for 40 minutes before noticing a drop-off in power and speed.
The "C" rating provides information on the continuous current the battery is able to provide during use. Most LiPo batteries can be charged at a 1C rate, with some, more expensive batteries claiming 2C or higher charge rates (but 1C is the safest and best for your battery). The formula @Heyitsme provided is correct. For most non-competition uses 20C is sufficient. The Venom 5000 mAh 20C batteries I have can provide 100 Amps of continuous current which is more than enough for my Circuit truck.
In my ECX Amp truck, with a 5000 mAh LiPo battery and otherwise stock electronics (540 20T brushed motor, 5 volt servo, ESC/Rx) I could drive the truck at almost full throttle for 40 minutes before noticing a drop-off in power and speed.
Fred Flintstone
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I run 25C LiPos, both 2S & 3S in my brushless AMP. They run pretty well, but I wouldn't want to go any lower. I know I am running at about the lowest C that I can get away with. Higher C rates are more expensive and I am all about saving $.
