It is possible to isolate the starting battery and the inverter.
It is not necessary to have two batteries. You can directly connect the main terminal of the isolator to the starting battery, and then connect the auxiliary terminal to the inverter input terminal. However, it is necessary to pay attention to the same voltage. When our product and the starter are both 12V, the rated input voltage of the inverter must also be configured at 12V.
By vevor