Normal BMS behaviour?
I have a 5kW Sunsynk Inverter and 2 x Synsynk 5.32kWh batteries with 3kW peak solar array. I have the timer setting running with minimum charge of 60% for part of the day and 80% for another part of the day. I notice that at some point the batteries do not charge more than about 100W for some reason, no matter what the settings on the inverter are and ample sunshine and grid available. When I turn off the battery and on again, like at around 20:45 in the first picture, the system works like expected for a few days, charging to 100% SOC when there is solar available or 80% when there is grid available. After a few days the system only starts charging at around 100W max again for some reason, no matter the time of day and no changes in any settings. Is this the battery BMS acting like it should, extending battery life or something?




If you have a GRID TIED set-up:
When the GRID goes off-line you will loose all power! Unless you have UPS loads connected.....
Like Groots says below - I cannot understand why you have your SOC for the Battery set so high??? Mine is set to 20% inthe day and 15% at night!!! Use the Battery its what you bought it for:)