Venom 7.2V 3000mAh NiMH Battery with HXT 4.0mm Plug x4 Packs Battery Type: Nickel Metal Hydride (NiMH) Battery Capacity: 3000mAh Battery Volts: 7.2V Plug Type: HXT 4.0mm Backed with Proven US Support and Venom's Industry Leading Limited Lifetime Warranty.