Another strategy used by many boondockers is the 50-80% SOC method. They do 50-80% charges over a long weekend, or even a week of off grid camping, and then charge the bank to full once back home. The problem with this is the bank experiences 'progressive capacity loss', whereby, by the end of a week, the bank may have lost too much capacity to last thru a night of running the furnace, cpap machine, or electric blanket, or whatever. AND it is very important to get the bank back to full, asap, otherwise permanent damage can occur. And this entails proper top charging, and perhaps an Equalizing session. But keeping the bank full, daily, via solar, eliminates all this. Bottom line is, flooded batteries prefer to be kept full as much as possible.
