This inverter is used to deliver power by battery & battery will charge by the solar panel only. This inverter is not connected with the utility power.
This inverter having both facility to charge the battery with solar panel and utility power. Also, having solar optimization technique, I. e. it will charge the battery from both source but priority would be solar first.
This type of inverter is two types. One is on grid inverter with battery & other is without battery. It is an inverter which converts DC (Solar power) power to AC power in day time if battery is not connected. But in day time the system produces how much electricity you can use the same as you require and remains electricity you can sold to the utility company and they will pay you for the electricity.
The sine wave inverter's output is same as utility power, but modified sine wave inverter’s output is not same as utility power.