Originally Posted by RONALDO_UK
But certainly the full battery voltage is used in calculating the energy (watts) drawn by the motor??
The ESC reduces average voltage, so average amps must increase for the power out to be the same as the power in.
The ESC absorbs a few watts in the form of heat but if you ignore those losses power out of the ESC always equals power in, only the volts and amp 'balance' changes.