HQRP Phone Battery for AT&T LUCENT CL82309, CL82359, CL82409, CL82509, CL82609, CL82659 Cordless Telephone plus Coaster HQRP&reg; Battery plus HQRP&reg; Coaster; Battery Voltage: 2.4V; Capacity: 850 mAh; Ni-Mh; Nickel Metal Hydride battery pack; Compatible with Original Battery; 1 Year warranty!