Liebert PSA1500MT3-120U 1500VA 900 W UPS Input Voltage Range: 84 V AC to 140 V AC Input Frequency: 50/60 Hz Output Voltage: 97 V AC to 129 V AC Battery Run Time: 0.10 Hour 900 W Full Load 0.20 Hour 450 W Half Load Interface Port: USB Management Software: 6 Hour Typical 8 Hour Surge Energy Rating: 50 J Features: Designed with simple controls for easy operation, it provides up to five minutes of back-up time at full load.; more than enough time to save work in process and shut down your system USB shutdown..