Amazon.com: 7.2V 6200mAh NIMH Battery for RC Cars, 6-Cell Flat Rechargeable Battery Pack, Replacement Hobby Battery with Tamiya Connector for Car Truck Truggy Buggy Tank Airplane Helicopter Boat Racing (2 Pack) :
Pololu - Rechargeable NiMH Battery Pack: 7.2 V, 2200 mAh, 3x2 AA Cells, JR Connector
Amazon.com: Gecoty 7.2V 2400mAh Rechargeable Batteries, Ni-MH AA Battery Pack with Tamiya Plug and Charge Cable for RC Truck, RC Boat, RC Tank : Health & Household
Amazon.com: melasta 7.2V 5000mAh NiMH RC Battery Pack Compatible with Banana Connector for Redcat Racing Vehicles : Toys & Games