Etekcity Nothing Capacity: 55mAh/Normal Voltage: 12V Electro-chemical System: Alkaline Manganese Battery For small devices including key fobs, garage door openers, security systems, keyless entry systems, etc Equivalent to 8LR23, ANSI-1181A, MN21, MS21, V23GA, VR22, A23, 1811A, 3LR50, LR-V08, SES-23A, EL12