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DescriptionThe 23A battery,Website:http://www.winpowhub.com, also known as L1028, is a type of 12V primary alkaline battery used in door bells and garage door controls. It comes in a cylindrical shape and is slightly shorter than a AAA battery. 23A is a knock-out product of WINPOW, which is one of the largest 23A battery manufacturers in China. Technical SpecificationsModel No.23AOther designationsL1028, A23, MN21, MS21, V23GA, LR23ABattery typeZn/MnO2Diameter/Height (mm)10.3/28.8Nominal volt