12v DC power systems is a sub-niche in both the RV and ham radio communities. I know of someone locally who has most of his house on 12v lighting and some appli

12v DC power systems is a sub-niche in both the RV and ham radio communities. I know of someone locally who has most of his house on 12v lighting and some appliances, to be able to take advantage of solar without the high expense and hassle of a grid-tied system.