[MetalMan]

If you gear it down on 3s Lipo, you'll still get more power out but since the voltage has increased the current draw will decrease. If you keep the same gearing when switching from 2s to 3s, then you'll need a battery that can handle more current since the load is the same.

As far as the Maxamps 6000mah battery being able to handle 100amps, it can do it in very short peaks (spikes). My data recorder has logged several 100amp spikes when using the 2s 6000mah battery on the 5700.