One reason not to use them is that relatively speaking, 12V batteries do not have the amp/hr storage capacity and are not deep cycle. Two Lifeline AGM 6V batteries will give you maintenance-free, deep cycle, and reasonable amp/hrs. They will cost you a bundle,however.
You might be better off with two deep cycle 6V golf cart batteries and a battery watering system. The watering system will reduce your maintenance to a few minutes/month.
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Roger & Mary
2017 Winnebago Navion 24V
2014 Tiffin Phaeton 36GH (Sold)
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