Venom 8.4V 4200mAh 7-Cell NiMH Battery Flat Pack with Universal Plug (EC3/Deans/Traxxas/Tamiya) Battery Type: Nickel Metal Hydride (NiMH) Battery Capacity: 4200mAh Volts: 8.4V Plug Type: Venom UNI Plug. Compatible with Traxxas Plug, Tamiya Plug, Deans Plug & EC3 Plug. Plug Type: Venom Universal Plug System