How to charge my battery with your LF inverter with charger function?

To charge the battery, need to confirm the following situations: 

1.right dc voltage, for dc12v inverter the voltage range is 10.5-15V, for dc 24v inverter, the voltage range is 21-30V, for dc 48v inverter, the voltage range is 42-60V.

2.AC INPUT must connect to the home grid, and the home voltage and frequency must be the same as the inverter's, also should be pure sine wave.