What are you doing? bashing, racing both? For 1/10th scale I would reccomend a hard case 5000mah battery with a minimum of 35c constant discharge or better. I would also recommend you do and advanced search for a poster/ user call Neu Racer. He is the owner of High Velocity Raceing and has some really great batteries and has the best warrenty of any MFG for lipo's. Send him a PM. These batteries are really good.