Duratrax NiMH 8.4V DTX4600 Hump Battery Pack FEATURES: Sport pack for cars, buggies, trucks, boats and more that require a 7-cell 8.4V hump pack configuration with a Traxxas connector INCLUDES: DuraTrax NiMH 7-cell 8.4V 4600mAh Hump Battery Pack with Traxxas Connector REQUIRES: Charger capable of charging NiMH batteries, such as the DuraTrax Onyx series or the Great Planes TRITON series