The Venom 8.4V 4200mAh NiMH Hump battery pack is meant to power your remote-controlled model so it achieves peak performance. With features like ultra low resistance 12 AWG soft silicone wire leads and the patented High Current Universal Plug System (patent no. 8,491,341), you can depend on. Also included: plug adaptors to fit Deans, Traxxas, Tamiya and EC3 plug types. Specifications: Battery Type: Nickel Metal Hydride (NiMH Battery) Volts: 8.4 Capacity: 4200mAh Cell Count: 7S Cell Configuration: 7-Cell Hump Pack Charge Rate: 1C (4.2A) Wire Gauge: 12 AWG Soft and Flexible Low Resistance Silicone Wire Plug Type: Venom UNI Plug. Compatible with Traxxas Plug, Tamiya Plug, Deans Plug & EC3 Plug. Dimensions: 137 x 45 x 45 mm / 5.39 x 1.77 x 1.77 in Watt Hours: 35.28 Weight: 17.2 oz (486.8 g)