Input Voltage Range: 82 - 144V Input Frequency: 50/60 Hz +/- 3 Hz (auto sensing) Output Voltage: 120Vac +/- 5% Outlets: (2) NEMA 5-15R (2) NEMA 5-20R (1) NEMA L5-20R Battery Run Time: Typical Backup Time at Half Load: 15.7 minutes (990 Watts) Typical Backup Time at Full Load :5.2 minutes (1980 Watts) Battery Recharge Time: 3 hour(s) Interface Port: RS-232, USB,Smart-Slot Management Software: YES