APC RT 5kVA 230V Smart-UPS (SRTG5KXLI) - Max Configurable Power (Watts): 5.0kWatts / 5.0kVA, Input frequency: 40 - 70 Hz Auto-sensing, Output Frequency (sync to mains): 50/60 Hz +/- 3 Hz Sync to mains, Load Crest Factor: 3 : 1, Bypass: Internal bypass (automatic and manual), Included Battery Modules: x 2, Interface Port(s): RJ-45 Serial, Smart-Slot, USB, Expected Battery Life: 3 - 5 years