4 Pack of VTech IS7121 Battery - Replacement for VTech Cordless Phone Battery (800mAh, 2.4V, NI-MH) Replacement VTech IS7121 Battery Replacement Cordless Phone Batteries Capacity: 800mAh, 2.4V, NI-MH Rechargeable Battery CE Approved and Safety Assured 1 Year Replacement Battery