AT&T-Lucent CL82413 Cordless Phone Battery Ni-MH, 2.4 Volt, 750 mAh - Ultra Hi-Capacity - Replacement forRechargeable Battery Replacement Battery - Ni-MH, 2.4 Volt, 750 mAh. 100% compatible with your OEM battery - 3 year warranty. Made with high quality Japanese cells. Synergy Digital is a Registered Trademark