I’m sitting here re-charging my RV battery bank. Just messing around seeing how this stuff works. One trend is RV manufacturers now furnish 12 volt DC powered refrigerators. Even the small units pull 10 amps, on hot days I can see 40 amps or so daily would be routine. Using a generator and the installed RV converter, it needs re-charging often, and while the performance is good, it is what it is. A propane powered refrigerator, on the other hand, will run for a month on a standard 20 pound barbecue tank. Out in the desert, water looms critical when...