Batteries APC generally are a type of sealed lead-acid (SLA) battery selected for reliability, safety, and relatively minimal maintenance. They consist of lead plates and an electrolytic solution including sulfuric acid and water in a sealed housing. The chemical reaction between the lead and the electrolyte solution creates electrical energy and stores it until any discontinuity in p... https://msplgroup.com/blog-details/How-to-Extend-the-Lifespan-of-Your-APC-UPS-Batteries