Martyn, thanks. Basically I'm going to get to a spot and possibly not leave for anywhere from a few days to a week or more. Besides the fridge/freezer I'll need to charge batteries for running my fishfinder/gps. I use 4.5 amp gel cells and I get about 14 hours out of one battery. My backups are more frugal. A color Fishfinder, which I can run for 3 days on the gel cell and then I have a handheld color gps that runs on 2 AA rechargables. I get a day per 2 batteries. The AAs I charge with an 8 battery fast charger that charges them off the cigarette lighter in a few hours.