kWh required to keep batteries charged?
Take a string of four or eight 48v Rolls 6CS 27P. It takes electricity just to keep them at a state of charge, even if you never call on them to supply power. I'd like to have some idea about how much power that is over the course of a year. And: How much difference would AGM be to keep charged vs flooded? I have a grid tied system and want to know how many panels to add just to generate the needed power that the batteries would consume, waiting to be called into action.
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