Amazon.com: 4.8V 500mAh Nickel Cadmium (Ni-cd) Replacement Battery Rechargeable Ni-CD Battery AA X 4 for RC Car Toys Lighting Equipment : Health & Household
4.8V 720 mAh BATTERY PACK NiCad WITH CHARGER - NIKKO
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