Amazon.com: 7.2V 2400mAh Rechargeable Ni-MH Battery AA Battery Pack with Standard Tamiya Connector for RC Car RC Truck Household Appliances 2 Pack with USB Charger : Toys & Games
Nikko Ni-MH 7.2V Mega accu & lader - 700mAh
Maya 9.6v battery pack and charger substitution set.