I have heard solar inverters charge batteries as well as provide load to house simultaneously. So u are right. But 200A liquid needs more than 20A. This formula may suit dry batteries. Not the liquid ones.
My ups safely charges AGS 174 liquid battery starting at 26A then decreasing down as battery fills and charge slows down to 10A.
I will ask Abid about this 50-60 A thing.
And i think your 200A is dry one u r talking about.
Lemmw ask him. Wait 10 minutes or more.
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