Battery packs to support 3 Speed 700 BB Turbos
We are building a 48 inch PT boat that will run 3 speed 700 BB Turbo motors. I have separate 70 amp ESCs for each motor. I need to find a battery to power the motors that will give me about 30 minutes or longer run times. We are trying to figure out whether to take the added weight of 12V sealed lead acid batteries or use NmH or LiPolies. Does anyone have any recommendations on batteries and battery configurations to get the run time. If I use lead acid, how many and how many amps. If I use NmH, how many pack and how many cells, and how many amps per cell. If I run Lipolies, how many packs, how many cells and how many amps per cell.