[Sneeck]

I begin to wonder how big of a wooden board you got stuck before your head. How many freagin' time's do I have to tell you that it's

NOT

about voltage, but amperage. For example, if you got 1.20 volt cell's they may aswell give that voltage at only 20 amp's discharge. While other cell's give out 1.175 volt's on 30 amp's discharge, and so on. Voltage doesn't mean the cell is good for your setup and what your going to do with it. If it was a 1/10 onroad racer, you want the most voltage as possible since voltage mean's more rpm, and amp's mean torque aka power. In your case you need amp's to let a 13 turn motor put out enough torque to get it to speed, plus push around a heavy monstertruck with 2 kg's of battery's alone.

The gp3300 are hand's down the BEST cell's as to discharge amp's. Good quality gp's can put out over 100 amp's! at their peak's without failing. Try doing that to unmatched cell's...

And like Gustav said, forget about runtime on your setup. It will be a power rush of 10 minute's top's. It's not a every-day bashing setup you choose to run. It's a uncontrolable speed machine which better has a wide open field to run in.