1, Power Inverter 2, Pure sine wave 3, With charger inside 4, Battery voltage: 12VDC 5,Output: 220Vac, 50Hz/60Hz Applications:Television, refrigerator, air ... Statusworking & loading & batteryInputVoltage140~275 VacFrequency45~65 HzOutputVoltage220Vac ±1% for inverter; 220Vac ±8% for regulatorFrequency50/60 Hz ± 0.5Hz, subject to the ... 21.908.409.5013.2017.20 1000VA Pure Sine Wave Power Inverter