7.4V 5200mAh 4 Cell Lithium ion 18650 38.48Wh Rechange Battery Pack with 2 Pin MTA-100 Connectors
Amazon.com: 2s Lipo Battery, 7.4V RC Lipo Batteries 5200mAh 50C Hard Case with Tr Connector for Team Associa Losi RC Car/Vehicle/Truck/Buggy (2 Packs) : Toys & Games