Hitech - Ni-MH Replacement Cordless Phone Battery for Many Panasonic KXTG series and Other Panasonic Phones Capacity: 1500mAh Voltage: 3.6V Chemistry: Ni-MH See description for list of compatible cordless telephones Replaces Panasonic P-P511, P-P511A, P-P511A/B, HHR-P402, and HHR-P402A batteries