Recently I bought a 12V 200Ah battery for my solar system with 500W 18v (27A) solar panels. I find a label on the battery which is notice that the minimum charging current is 10% of the battery capacity. 10% of 200Ah is 20A.
Max. current comes from my solar panels in cloudy days is less than 10A,
So dose it means that the charging process totally stop in cloudy days or just become slow?
I want to connect two batteries together in parallel (400 Ah), so the minimum current to charge them become 40A? (according to this battery label).