Provides extended runtime for compatible UPS systems in education, healthcare, military, government and other IT applications in small or mid-size networks. Features | Backup Battery Module Gives Your Compatible UPS System Extended RuntimeThe valve-regulated lead-acid (VRLA) BP48V offers extended battery runtime when used in conjunction with the SU1500XLCD SmartOnline (r) UPS system. It can also be daisy-chained for a maximum of four matching battery packs to deliver even longer extended-run operation. Heavy-gauge cabling with highcurrent DC connectors is included for safe, simple installation.