Amazon.com: Top Race Spare Replacement Battery 7.4v 2000mAh for TR-211M, TR-213 RC Excavator and Construction Trucks (TR-211M-B) : Toys & Games
NiMH Battery, 7.2V 2000mAh
Amazon.com: URGENEX 7.4V Li-ion Battery 2000mAh 2S Battery with SM 2P Plug High Capacity for Remote Control RC Boat 2 Pack H101 RC Batteries with 2 USB Chargers : Toys & Games