Hitech - Replacement Cordless Phone Battery for Escort 9100, 9400, 9500, 9536, 9600, 9701, Courier, Courier 9100 Capacity: 600mAh Voltage: 4.8V Chemistry: Ni-Cd Fits Escort 9100, 9400, 9500, 9536, 9600, 9701, Courier, Courier 9100 Equivalent to AT&T 9300, 9538