Input Voltage Range: 90 - 140 V Input Frequency: 60Hz +/- 3 Hz Output Voltage: 120Vac +/- 5% Outlets: 4 x NEMA 5-15R Battery & Surge 4 x NEMA 5-15R Surge-Only Battery Run Time: 8 min. runtime at Half Load 2 min. runtime at Full Load Battery Recharge Time: 8 Hours Battery Replaceable: Yes, HR1234W Interface Port: USB