Amazon.com: Pickle Power 12V RC Battery Pack, 2 Pack 2200mAh NiMH Rechargeable Battery with Bare Leads for RC Airplanes, RC Car, DIY and More : Toys & Games
Matrix High Output Small Type Airsoft NiMH Battery (Configuration: 9.6V / 1600mAh / Small Tamiya), Accessories & Parts, Batteries, NiMH / NiCd Batteries, Small Type - Evike.com Airsoft Superstore
Pololu - Rechargeable NiMH Battery Pack: 3.6 V, 2200 mAh, 3x1 AA Cells, JR Connector