Uniden BT2499 Cordless Phone Battery 3.6 Volt, Ni-MH 1300mAh - Replacement For UNIDEN BT2499 Replacement Battery for Uniden BT2499 - Ni-MH, 3.6 Volt, 1300 mAh. 100% compatible with your OEM battery - 3 year warranty. Made with high quality Japanese cells. Synergy Digital is a Registered Trademark