Do you need a 12-volt cylindrical alkaline battery? This Ultralast UL23A 12-Volt Battery is a great choice. This type 23A nonrechargeable battery is compatible with other 23A types like the EVEREADY A23 and Radio Shack 23-144. It meets or exceeds original manufacturer specifications. 12V Alkaline Long life 33mAh Not rechargeable Comparable to Duracell® MN21 & MN21/23, EVEREADY® A23, Kodak® K23A, NEDA number 1811A, Panasonic® LRV08 & Radio Shack® 23-144