i cant remember at the top of my head but its quite high (18V). Its got more than enough power to start the engine and if, like i said beofre, i hold a blow drier to it for 5 mins the engine will start. Thats alright if im at home but i cant exactly take a blowdrier with me whenever i go out bashing lol.

another issue ive only found recently is that i have to have the throttle trim right up for it to stay alive, like 1/3 throttle up (wheels spinning of course, spinning quite quickly) otherwise it just quits.

maybe i need a new engine. possibly an axial .28 (or even a 32!! )