Backup Battery Module Gives Your Compatible Eaton UPS System Extended Runtime The 9PXEBM48RT-L offers extended battery runtime when used in conjunction with Eaton's 9PX1500RT-L, 9PX1500RTN-L and 9PX1500GRT-L 9PX UPS systems. 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 high-current DC connectors is included for safe, simple installation. Supports 1U Rack or Tower Installation This backup battery pack's multi-use form factor supports mounting in 1U of space in EIA-standard 19-inch open frame racks or enclosures using the included 4-post rail kit and mounting brackets. Tower stands from a compatible UPS support optional upright configuration of the battery pack.