I run 2 6V Lifeline AGMs in series 220AH total. I attach a portable 100W solar panel to them and have a Yamaha 2000W generator. During hunting season the panel keeps the battery bank topped off and when we require more electricity in camp in the evenings? We run the generator to keep them topped off. We set the thermostat at 60 overnight and never run out of battery for 7 days. The key is to make sure that you have a true multi stage charging converter that has a trickle/float charge in that last stage. Most newer Rvs come stock with them.
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