Reliably power all types of devices with the Energizer A544 Battery. The A544 is common in medical devices, dog collars and more. This 6-volt miniature alkaline battery serves as a replacement for the 476A, 4LR44, GP476, K28L, L1325, PX28A and V28PX. Per each. Cancer and Reproductive Harm- www.P65Warnings.ca.gov. Type: Batteries.