January 18, 20233 yr Hi all. I have now twice seen my lithium battery showing 94% SOC but the inverter has stopped charging. Normally after load shedding my battery will go down to about 78% and charge up for about 45 mins when Eskom returns to 100%. Both are Esener units and the settings are correct and talking via the RS485 connection. Should SOC always be 100% or is there other factors the inverters checks to decide when to stop charging ? Battery has had 3 cycles so far so brand new.
January 18, 20233 yr 20 minutes ago, jcblig said: Hi all. I have now twice seen my lithium battery showing 94% SOC but the inverter has stopped charging. Normally after load shedding my battery will go down to about 78% and charge up for about 45 mins when Eskom returns to 100%. Both are Esener units and the settings are correct and talking via the RS485 connection. Should SOC always be 100% or is there other factors the inverters checks to decide when to stop charging ? Battery has had 3 cycles so far so brand new. Lithium batteries don't need to be at 100% - its actually not that great for them to be at 100% for prolonged periods. The BMS typically slows the charging between 90 and 100% so while it may take a short time to get to 90 it could take longer to get to 100% from 90%/. It is probably just balancing but i would watch it to see if that top-end doesn't degrade further (which could be a faulty cell)
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