Ni-CD AA 700mAh 4.8V Rechargeable Battery Pack - China Ni-CD Battery and Rechargeable Battery
Gecoty® 4.8 V Battery, 2400 mAh Rechargeable AA NiMH 4.8 V Battery Pack RC Car Battery with SM Plug for Remote Controlled Trucks, Lighting, Power Tools: Amazon.de: Electronics & Photo
Euro Pro Shark V1700z, Shark V1930, X1725qn replacement battery
Exell Battery Rechargeable Nickel Metal Hydride (NiMH) Ebc-70 Security Batteries in the Device Replacement Batteries department at Lowes.com