When the battery is that low, the fridge does not work, and is no more than a cooler,
From a practical stand point
If you are going to continue renting this RV,
Replace the battery, consider it part of the ongoing rental expense, changing RVs would probably cost more than replacing battery,
then run the generator
2 hrs in the morning and 2 hours in the evening,
This will keep the battery in shape so the furnace can provide heat, and the fridge doesn't defrost and food spoil
1 hour a day is not enough, good battery or bad,
You must replace all the amp hours of power used, on a regular basis
Running the engine or generator to charge a bad battery is a waste of fuel,
