AT&T-Lucent TL7600 Cordless Phone Battery Li-Pol, 3.7 Volt, 240 mAh - Ultra Hi-Capacity - Replacement for AT&T BT191545 Rechargeable Battery Replacement Battery for AT&T BT191545 - Li-Pol, 3.7 Volt, 240 mAh. 100% compatible with your OEM battery - 3 year warranty. Made with high quality Japanese cells. Synergy Digital is a Registered Trademark