HQRP Phone Battery for Panasonic KX-TG5050W KX-TG5055W KX-TG5210M KX-TG5243M KX-TG5421S KX-TG5422M Cordless Telephone plus Coaster HQRP&reg; Rechargeable Battery plus HQRP&reg; Coaster; Battery Voltage: 3.6V; Capacity: 850 mAh; Ni-Mh; Keep in touch with friends and family and never miss a conversation; Compatible with Original Battery; 200 Days warranty!