Genuine FiOS OEM Approved Replacement Battery (3 Year Warranty) by GS Battery - GT12080-HG - Premium Replacement for PX12072-HG High quality & Last long Japanese Brand Battery produced in Taiwan for Fiber to the home system 12V, 8Ah Applied for Verizon Fios, AT&T, Centurylink and most other FTTH systems 11% longer back-up/talk time than PX12072 battery Rechargeable, maintenance free, and fully recyclable through Call2Recycle.org 3-year replacement warranty - (Must be placed into service within 90 days of purchase)