This UPS backup battery replacement is compatible with Eaton's 9PX6KSP 9PX UPS system. Eaton UPS batteries have an expected lifespan of three to five years, so you should take proactive steps to avoid a dead battery and ensure continuous uptime. The sealed lead acid (SLA) EBP-1804 internal battery cartridge is hot-swappable, allowing you to install it without powering down any connected equipment. Built to function in a wide range of operating temperatures, the EBP-1804 has been carefully screened and certified to restore your UPS system's runtime performance to its original specifications. It is leakproof, requires no maintenance and comes pre-wired for quick and easy installation in your UPS system.