6 Volt 1 Ah Sealed Lead Acid Rechargeable Battery - F1 Terminal | Battery Mart
RB-6V Rechargeable Battery - Ocean Technology Systems
Amazon.com: Blomiky 6V 2200mAh Ni-MH 5 AA Rechargeable Battery Pack with SM-2P Black 2 Pin Connector Plug and USB Charger Cable for RC Truck Cars Vehicles 6V NiMh : Toys & Games