Hitech - Replacement 11711991, 3N600AAMTM, GESPCF02 Cordless Phone Battery for Many Radio Shack / Tandy Phones Capacity: 700mAh Voltage: 3.6V Chemistry: Ni-Cd See description for list of compatible cordless telephones Replaces Panasonic P-P501A, P-P504PA, HHR-P505A, and Uniden BT-905 batteries