4 Pack of Panasonic KX-TD7680 Battery - Replacement Panasonic Cordless Phone Battery (800mAh, 3.6V, NIMH) Replacement Panasonic KX-TD7680 Battery Replacement Panasonic Cordless Phone Battery Capacity: 800mAh, 3.7V, NIMH Rechargeable Battery CE Approved and Safety Assured 1 Year Replacement Warranty