Variable voltage box
Has anyone wired up a battery to have a low voltage and high current optimized for low speed then added in a box that has relays and resisters set up so that it can up the voltage so that the batteries are optimized for higher speeds?
I know there is this balance between current and voltage and you would want higher current for low speed and higher voltage for high speed, so why not make a box that can do both? You could get even crazier and have the switches for the change in voltage be setup to the gear shifter so that when you put the car in higher gear it will change the voltage to be optimized for that speed.
Has this been done? I had trouble searching for it, I bet I just don't know the name of this thing.