150cc outrunner in chainsaw ?

[zeropointbug]

I think it would be cheaper to just buy an electric weed wacker and put a high powered LiFe pack on it, or on a backpack. As for the chainsaw, an AC powered one is all I can say would work with an Sine wave inverter fed by 4s LiFe battery, say the 20Ah A123 flat pouch cells. There are some things that just shouldn't be done, at least with the technology available at the time.