APC SU1250RM The APC SU1250RM Battery cross-references to the below.Double check the actual size of the batteries being replaced. UPS replacement battery packs contain replacement batteries only. You must reuse your existing cabling and hardware. APC model numbers are very similar, so check the model number listed here with the barcode label on the back or bottom of your unit. The state-of-the-art lead-acid battery is the valve-regulated type (sometimes called "sealed" or maintenance-fre. . . The state-of-the-art lead-acid battery is the valve-regulated type (sometimes called "sealed" or maintenance-free), which fixes the acid electrolyte in a gel or in an absorptive fiberglass mat. The advantage of this design is that the battery needs no water additions, can be operated in any position, and can be used in close proximity to people and sensitive equipment. Additional benefits: maintenance-free,sealed no-leak design, higher cranking amps, lower self-discharge, greater vibration resistance, heavy duty, no-corrosion terminals. 13.1 12 18 247 7.13 3 6.57 1 Year SLA Universal Power Group No http://site.apexbattery.com/logos/apc.jpg 806593457456 New B1 U