NiMH 7.2V 5000mAh Flat Star Plug.  Plug style may vary. FEATURES: Ideal pack for weekend car, buggy, truck and boat racers as well as the serious competition racer who wants a less expensive alternative to INCLUDES: One DuraTrax 6 cell 7.2V 5000mAh NiMH Flat Battery Pack REQUIRES: Charger capable of charging NiMH batteries, such as the DuraTrax Onyx series or the Great Planes TRITON series