The popular 12 volt 23A battery is also known as a number of different part numbers from various manufacturers. This battery replaces 23AE GP23A GP23AE CA20 L1028 MN21 VR22 LRV08 V23GA. This pack contains 5 batteries. Now with no added lead and 0% Mercury these little batteries are now called GP Super 23A, previously known as GP Ultra 23A.