NiMH Battery Pack: 7.2V 1600 mAh (2x3S/S, MH-2/3A1600B)
Pololu - Rechargeable NiMH Battery Pack: 7.2 V, 2200 mAh, 3x2 AA Cells, JR Connector
Amazon.com: Blomiky 7.2V 2200mAh Ni-MH Rechargeable AA Battery Pack with SM-2P Black Plug and USB Charger Cable for Old Version 15 Channel 2.4G Huina 1550 550 RC Excavator 7.2V NiMH : Toys