ABCENT BT-446 Rechargeable Cordless Phone Replacement Batteries for Radio Shack: TAD-3704 TAD-3815 TAD-3872 TAD-3880 TAD-3898 ET-3580 ET-3581 43-5529 43-5560 43-5561 43-5562 43-5862 23-961 2300961 CS-90261 TAD3704 TAD3815 TAD3872 TAD3880 TAD3898 ET3580 ET3581 435529 435560 435561 435562 435862 23961 CS90261 3.6V 800mAh NiMH Chemistry: Ni-MH Voltage: 3.6V Capacity: 800mAh Color: White High Quality Replacement battery manufactured by our own facotry Designed to meet or exceed performance of original battery. Battery shrink wrap casing made of 100% post consumer recycled product (May vary in color based upon market availability as such, no varying in functionality)