Ultralast UL-912 Cordless Phone Battery for AT&T, Panasonic, Uniden and Radio Shack For AT&T, Panasonic, Uniden and Radio Shack 3 AA Nickel Cadmium (NICD) 600 mAh, 3.6 Volts Measurements 1.9" x 1.7" x 0.6" 48.26mm x 43.18mm x 15.24mm