I have a Multiplus II 5000, 8kW solar panels and 14.4kWH of pylontech batteries.
All winter I have been charging the battery at night to 95% and using this power during the day. Occasionally the battery goes down to 15% and we start using mains power as expected.
Now we are getting more sun and the charge is staying up pretty high during the day so I reduced the night time charge to 80%. Today I noticed that the battery was at 80% and not discharging and we are using mains power. I checked the ESS settings and noticed that the Active SOC limit was at 80%. I have no idea what it was before but the system worked as I expected, discharging the battery each day and charging at night.
I changed the Battery Mode to - Optimized (without BatteryLife) and the battery started discharging.
Can anyone tell me why this has happened?