We bought a used a 33.3 Palazzo with a residential fridge. We camp at state parks without electricity or boondock about 25% of our nights. If off the grid we run our generator twice a day for one hour. That keeps the batteries at 12.0V or higher. We usually run the generator in the morning when making breakfast and again late afternoon to minimize noise issues for neighbors. Our generator has done fine with routine oil changes only. We have 4 golf cart batteries as our power bank. Solar too pricy for us.