Ultralast UL23A UL23A 12-Volt Battery 12V ; Alkaline; Long life; 33mAh ; Not rechargeable ; Carded; Comparable to Duracell(R) MN21 & MN21/23, EVEREADY(R) A23, Kodak(R) K23A, NEDA number 1811A, Panasonic(R) LRV08 & Radio Shack(R) 23-144;