Originally Posted by semper
There is a larger current draw to compensate for the "missing" voltage. If we were to say that 5.5t/4 cells = 8.5t/6 cells, hen your setup might roughly comsume a third more current than the later.
No...if the resistance of the motor and speed control remain the same and the voltage drops, the current would then drop.
You'd have less IR in the battery pack because you have one less cell...but you're mostly going to use more battery because you're going to be on the gas more and you're running a taller gear...or a lower-resistance motor.