No inverter in the '18 2106ds. The power panel has a trickle charger for the battery when under shore power. However, under battery power you do have battery voltage at one socket behind the TV and 3 USB ports for charging cell phones and pads etc. These are always powered up under battery alone or shore power. As for getting an inverter, that will depend upon appliances on hand. Cook, water heater and heat with gas, fridge on gas.
For the time, I do not plan on operating any 120VAC appliances while boondocking......that could change!
....Yes Dear! So, We get the PVs next week will update.