7.2V 3300mAh NiMH Battery:ESAV, E10, EFS,DT-1 This is the GT 3300mAh NiMH 7.2V Stick Battery Pack from HPI. Features: Ideal for many 1/10 scale electric powered cars, trucks, starter boxes, and the HPI Roto Start and Roto Start 2 engine starters Includes: HPI GT 3300mAh NiMH 7.2V Stick Battery Pack with Standard Connector Requires: NiMH compatible charger such as the Duratrax Onyx series Tech Specs: Length: 5.2" (132mm)Width: 1.75" (44.4mm)Thickness: 0.78" (20mm