new type,pure sine wave INVERTER/CHARGER HBC-PSW1000VA, HBC-PSW2000VA, HBC- ... voltage: 220V±10%Output frequency: 50Hz±2% automatic stabilized frequencySwitching type: auto switch in 3sOutput wave form: sine waveEfficiency: ≥0.7Battery ... : single 12V battery, us14.5-15V (other voltage is multiplied) new type,pure sine wave INVERTER/CHARGER