I currently use 2 12v batteries for the coach on my 87 Southwind. When money allows, I am going to take the mh to a welding shop and have them beef up the battery area and add a platform as big as possible so I can run 4 6v batteries, and if possible 6 6v batteries in a series/parallel setup. The only time we go to a campground is to fill the fresh water tank and to dump our black and grey water tanks. The rest of the time we are off the grid. I want to get a 4 panel solar system installed, but that is going to be sometime from now as money is in short supply at the moment--like that is anything new :) I chose 2 group 27 12v batteries over 2 6v gold cart batteries just because it made me feel more secure, probably in reality there is not a difference; but if one goes dead I still have 1 full 12v battery to run the coach where as with 2 6v batteries if one goes bad, then you are stuck with 6v which will not run anything in the mh.
