The Genuine APC Replacement Battery (RBC) is tested and certified for 100% compatibility with the specific APC UPS. This lead-acid RBC has a lifespan of three to five years. This provides reliable support and extends the life of your UPS. The APC RBC is delivered fully assembled and ready to use. To view the list of compatible UPS models, please click on the 'Find your replacement battery' button in the 'Support' section at apc.com.