Bias 7.2V 3000mAh NiMH Battery - Universal x4 Packs Battery Type: Nickel Metal Hydride (NiMH) Battery Capacity: 3000mAh Volts: 7.2V Plug Type: Venom UNI Plug. Compatible with Traxxas Plug, Tamiya Plug, Deans Plug & EC3 Plug.