Hitech - Replacement Cordless Phone Battery for Panasonic KXTG2000B, KXTG4000B, PP507ABA1, PQP50AA61 Phones Capacity: 700mAh Voltage: 7.2V Chemistry: Ni-Cd Fits Panasonic KXTG2000B KXTG4000B PP507ABA1 PQP50AA61 TYPE18 Replaces Panasonic HHR-P507A, P-P507A