NIKKO 4.8V 720MAH battery and CHARGER (1348) in category Gadgets - Hobbies/RC Models at Easy Technology.
Nikko 4.8v 600mAh battery pack and charger
Amazon.com: OooSure 1400mAh 4.8V 5557 Connecter Rechargeable NiCD Battery AA X 4/5559 Plug for RC Toy Household Electric Appliances Lighting Equipment with Charging USB Cable : Toys & Games