Output Output power capacity : 1.0 KWatts / 1.44 kVA Max Configurable Power (Watts) : 1.0 KWatts / 1.44 kVA Nominal Output Voltage : 120V Output Voltage Distortion : Less than 5% Output Frequency (sync to mains) : 50/60Hz +/- 3 Hz Topology : Line Interactive Waveform type : Sine wave Output Connections : (6) NEMA 5-15R (Battery Backup) Transfer Time : 4ms typical : 8ms maximum Input Nominal Input Voltage : 120V Input frequency : 50/60 Hz +/- 3 Hz (auto sensing) Input Connections : NEMA 5-15P Cord Length : 8ft ( 2.44meters ) Input voltage range for main operations : 82 - 144V Batteries Runtime Battery type : Maintenance-free sealed Lead-Acid battery with suspended electrolyte : leakproof Typical recharge time : 3hour(s) Expected Battery Life (years) : 4-6