I would keep an eye on those AC systems with their heat. Some come with heat strips in them and can turn those on if you set your desired temp to high for the reverse refrigeration to handle. That heat strip is what will kill battery capacity when running. Keeping the AC set at one temp I would say 21C is a good temp but that is depending on what your comfort level is. Liking to see all these systems come out after I stopped living in a motor home.