Hmmm! You are going to take about 17v DC from a panel, and feed it to a micro inverter that converts it to AC. Then feed it to a charger that charges your batteries. There is a lot of inefficiency in that circuit.
Don't know how efficient the first step is, maybe 95% but the second step is usually only 80% for the charger. Just look at any charger's specs: voltage x current in vs voltage x current out.
I understand micro conrollers where each panel has its own controller that charges batteries, but not with AC in the middle. I don't see the point of that extra step.
David
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