Hi,
A system that has been up and running for just over one year has started to exhibit an interesting behavior around the SOC limit. Taking example with SOC limit set to 95%. The battery will charge >95% over course of day. Whilst charging the SOC might be displaying 98% whilst grid+solar>load. As soon as load>grid+solar & battery starts discharging the SOC drops immediately to 95%. As this is the SOC limit the battery only briefly stays before discharge stops & it switches back to charging, at which point SOC jumps back to 98%. This switching behaviour & SOC fluctuation occurs a few time a minute. I do not see ay major change in the voltage to justify the change in SOC displayed (see attached screenshots)
Setting SOC limit to 30% the same behaviour is exhibited but the fluctuation is greater ~7% on SOC.
Would anyone have an idea on why this might be occurring? Previously the system did not exhibit this behaviour, the system would switch between charge/discharge without corresponding jumps in SOC.
Screenshot 2024-02-08 200139.jpgScreenshot 2024-02-08 200114.jpg
