Originally Posted by Troubles Dad

Honest opinion, buy a battery, unless you know someone that has one you can try, do you have a local hobby shop, they may have one you could try as well, and you can always use extra batteries, I would recommend up to a 5,000 mah battery pack, as I can run upwards of 25 minutes on a 4,000 mah battery pack and the more the mah, the more it will cost, also get the biggest C rating you can, it keeps the voltage higher thru out the run