This is a 24 volt Linak battery replacement for Aqua Creek battery powered pool lifts using the Linak operating system. The Linak brand batteries are identifiable by the metal tabs on the bottom of the battery. They connect to the control box on the lift and charger.
You should always keep a second battery on-hand fully charged. To maintain the battery properly, the battery must be fully charged monthly. If the battery goes for longer than three months without a charge, the battery will have significantly reduced capacity.