Battery being charged even though settings prohibit
I have 2*5.32 batteries connected in parallel, for a few weeks I have noted the SOC drop to 20% and then the batteries charge to around 40%, even though I have the setting for the time period to be SOC 20% and no grid feed.
Seeing similar posts here, Im suspecting that its an imbalance in the batteries, however, yesterday I fully charged to 100% for about 2 hours in the night and then about 5 more hours when the sun shone. However, around 9pm, the grid started to charge the battery. If charging to 100% should re balance the battery, how long do they need to sit at 100%?
Any other thoughts on what might be the issue?
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Update, my installer has replaced the 2 batteries and I'm now monitoring performance