look here click it it is a battery that about 1.5 times bigger than a regular bit battery but the good damnn thing is that this little peice of garbage is 12 volts and i heard in another thread that someone tested vold to the pcb and motor and it can stand 12 volts
its 96 cents but if u odnt realy feel like buying then do what i did, first use one hand to look at another kind of battery and with the other hand just start opening the pack of 12 volt battery and i bucked like 5 of them doing this and didnt get cought and this battery is as long as from headlight to headlight (side to side) on bit so its easy to moutn it on the back or stick it under pcb vertical not horizontal and there u go!
if u run out of mah on all hte batterys just go buck some more or buy some for 96 cent
sorry for my ghetto language if u odnt know buck means steal
small battery
damnit the link dont work but just go to batteries and flashlights then batteries then 12 volt on the link