The APC Replacement Battery Cartridge #110 fits selected APC Back-UPS, restoring power back-up capacity for home offices, small businesses and IT departments. This replacement battery cartridge has a lifetime of 3 to 5 years, offers safe and reliable support to the UPS and extends the useful life of your UPS. It also comes fully assembled and includes easy-to-follow replacement instructions, making hot-swap installation simple. Prepaid postage and reusable packaging provided for safe disposal of old cartridges.