[DutchmenSport]

If you have a residential refrigerator, your inverter runs on a separate line from the battery. You have 2 cut off switches. You have the red key that shuts down (most) of the house. And then inside your front bay, there is a red dial cut off switch. That one turns the battery off to the inverter.

If you left that switch in the "on" position and you left the inverter on, and the refrigerator on, and you were not plugged into shore power, your batteries will survive running the refrigerator, at best 14-24 hours. So, this is your scenario, (you are not plugged into shore power), there's nothing wrong with the batteries. They are just run down.

Also, if you left something turned on, like the furnace, and didn't realize it. It doesn't take long for the battery to run down, if you are not plugged into shore power.

Now, if you were plugged into shore power, and your cut-off switch was off, and the inverter switch was on, the converter will not charge the battery. That switch works both ways.

And then, if you you left the refrigerator inverter on, that would explain why your battery ran down.