... voltage:145-275Vac 4.AVR function Off grid 3000w pure sine wave solar inverter Main features: 1 ... Models230V ModelsOUTPUTPower Levels crated at1000W,1500W,2000W,3000W,4000W1000W,1500W,2000W,3000W,4000WOutput Voltage100V/110V/120V(+/-10%) Selectable220V/230V ... Recommended)Voltage1000W:12/24VDC; 1500W-2000W:24/48VDC; 3000W-4000W:48VDCTypical backup timeNo LimitCharging methodQuick charging when battery ...