Duratrax NIMH 8.4V DTX5000 Flat TRX Battery Flat (side by side) cell configuration with Traxxas connector Specifically designed for the Traxxas Summit, E-Revo and E-Revo Mamba INCLUDES: DuraTrax NiMH 8.4V 5000mAh Flat Battery Pack with Traxxas Connector REQUIRES: Charger capable of charging NiMH batteries, such as the DuraTrax Onyx series or the Great Planes TRITON series