Technical Specifications : - Max Configurable Power (Watts) : 650 Watts / 1.2kVA - Output Frequency (sync to mains) : 50/60 Hz +/- 1 Hz Sync to mains - Topology : Line interactive - Waveform type : Stepped approximation to a sinewave - Transfer Time : 6 ms typical : 10 ms maximum - Input frequency : 50/60 Hz +/- 5 Hz Auto-sensing - Input voltage range for main operations : 140 - 300 (230 V) VAC - Input Power Factor at Full Load : 0.51 - Battery type : Lead-acid battery - Typical recharge time : 8hour(s) - Nominal Battery Voltage : 12V - Expected Battery Life (years) : 1 2 - Battery Volt-Amp-Hour Capacity : 108 - Control panel : LED Status display with on line : on battery - Audible Alarm : Alarm when on battery : distinctive low battery alarm