What did WE do in the 50's the 60's the 70's the eighties and nineties when we had to charge batteries? Remember this is about CHARGERS not converters. Think a few hundred thousand campers RUINED their batteries every camping trip. Or ran back to a physiciatrist because the camping trip was "ruined" because batteries needed to be charged manually? Charger! Read the title of the thread if you will. Not converter. Oranges and road apples. We seniors could spin a timer dial on a charger while youngers are incapable of vizualizing the concept? We got along just fine without a Pakistani programmed Chinese IC tring to think for us. Fifty years ago when I shut off the charger the battery was 100% full, not 83% full or 69% full. You start percentling battery bank capacity and suddenly you find you are hauling around 80 pounds of dead weight with a bigger bank. Again in hopes of making a seeming fuzzy subject clear a battery charger is NOT a converter. But answer me this point What is the difference between a smart battery charger and a smart converter when boondocking? While people play pinchy-giggle and pin the wanger on the donkey with smart chargers to get them to do anything, I twist a dial and walk off.