 Converter takes the 120 Volts AC from the park pedestal and converts it to 12 Volts DC. The converter charges the battery. If the batteries are low, it will put strain on the Converter and can damage it. It is not designed to hold the load of the batteries.
An Inverter takes the 12 Volts DC and converts it to 120 Volts AC. This is stored so that when you you are dry camping and not plugged into electricity, you are able to run certain RV appliances. Most refrigerator outlets are dedicated inverter outlets. If you notice some of your RV outlets not working, it could be a bad inverter or GFCI that popped.
