ORIGINAL: TUMBLER
No it doesn't really work that way. It depends on a lot of factors. The KV of the motor, the number of cells you use, etc. For example, on 4 cells and a 8x8 prop mine draws 60 amps and 800 watts. On 5 cells I would have to drop the prop down to probably a 7x7 or less because the motor will turn higher rpms and draw more . The idea being that the more cells you add, the lower your amp draw will be. High volts/low amps is the key to power. You have to find the combination that lets you stay in the range of your motor, speed control, and battery and still give you waht you want.
Yeah I should have asked you how many cells, etc.
So what are you running?