Redcat Racing Lipo Battery 11.1V 3900 mAh (Must Use LIPO Charger) Vehicle For troubleshooting and warranty information please contact a Redcat Racing Customer Service Specialist at 602-454-6445 or by emailing amazonsupport@redcatracing.com NOTE: Please read the User Manual before use. Lipo Battery 11.1V 3900mAh (Must use LIPO charger) Genuine Redcat Racing Batteries & Chargers, Spare Parts Redcat Racing Part Number 03207