The normal work process of a solar inverter: all power supplied to the load is double converted (AC-DC-AC) by the rectifier and the solar inverter, which floats the battery to keep it fully charged. The batteries store energy and are maintained at a normal voltage when the AC supply is normal. In the event of the grid outage, the battery immediately supplies the inverter with power to ensure that the power supply AC output voltage continues to supply the load. The inverter will continue to operate until the battery is discharged or the power supply is restored.