I need to buy a 4s 650mah Lipo battery, but I am not sure what c-rating to get. This is what my esc is: Continuous current: 20A
Peak current: 25A (10S)
BEC output: no
Input voltage: 2-4S
Main control chip: 48mhz EFM8BB2
Firmware upgrade: Supports Dshot600/BLHeli_S/Oneshot125
MOS type: vs3610ae 30v64a
So, I am not sure if I should get a 65c or 75c.
According to the formula: max continues Amp drew (A) = battery capacity (Ah) * discharge rate, so the 65c is 42 A, 75c is 49A.
The continuous output of battery current needs to be greater than the maximum continuous current output of ESC, so in theory choose a 650mah 4s battery, 65c and 75c is both compatible.