Your SU-series UPS is still protecting the gear, but the battery inside is working overtime. You've probably noticed shorter runtimes or a self-test warning you can't ignore. This 48V cartridge is the exact replacement your unit was designed to accept — two sealed lead-acid cells in a stand-alone stack, one cable, done. No rewiring, no voltage guesswork. Arrives fully assembled with all connectors, an installation guide, and a recycling sheet. Three to five years of dependable backup ahead of you. 2-year warranty included. Fits SU2200RMI3U, SU5000I, SU5000RMI5U, and SU5000RMXLI5U. Add to cart while the old battery still holds a charge
