5 Pack of AT&T BT8001 Battery - Replacement for AT&T Cordless Phone Battery (800mAh, 2.4V, NI-MH) Replacement AT&T BT8001 Battery Replacement Cordless Phone Batteries Capacity: 800mAh, 2.4V, NI-MH Rechargeable Battery CE Approved and Safety Assured 1 Year Replacement Battery