We run a Jackery 1000 in our WJ and it keeps the drawer fridge running for a biit over two days with no charging. We have 200 watts of portable solar power, though we most often do not get into camp until dark and being in washinton its often cloudy, so not as much help as you would think. Biggest downfall with the Jackery is the extra space it takes up. On our JK project we are going with a Redarc manager 30 with DC/DC charging and a 100ah lithium battery mounted under the cabinetry we are building. will easily charge the battery back if driving ever day, and if camp will accept the portable solar panels. will have plenty extra power for the elec blanket in the winter also:) I expect the best part is allways on board and out of sight