beat u to it! dual NiMH 3+engine. the batteries are hooked up so they give more power not runtime. I have been on the phone to the contacts inthe manual asking about selling battery packs for all our hungry bits out there but no positive response yet. maybe if everybody hassles them they might oblige. pity about the steering, guess it makes it easier to dicide to cannabolize all its parts. checkmy reply to keli on “which car”