This NiMH rounded stick pack is a universal fit in many electric-powered kits and battery-powered accessories like the HPI Roto Start. Perfect for kits like the E10, RS4 Sport 3 & the Maverick Quantum. Specifications: Voltage: 7.2V Capacity: 3300mAh Battery Type: NiMH 6-Cell Stick Pack Cell Size: Sub-C Dimensions: 139 x 48 x 26mm Connector: Tamiya