So long as you are servicing the batteries with distilled water only on a monthly basis, and provided your charger is set appropriately, not overcharging the batteries, I believe your approach should give you the most life out of the batteries. There are more informed folks than myself on this, but what you have done is exactly what I am doing.
Did your batteries end up dry? Were they just at the end of their life?
Mike
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Dean and Mike
2016 Fleetwood Discovery 40E
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