Hi Community,
the Battery monitor of my Multiplus II GX shows wrong low SOC % from time to time. In the chart below you can see a long decay from 13. July to 20. July.
During this week there was no correct SOC %. The battery voltage was charged to full 57.6 V every day but for any reason the Battery monitor did not get this correctly and SOC declined from day to day.
I noticed that during those days the charger does not run in bulk or absorption mode, it remains in Float mode all the time.
The only way to reset the SOC back to 100% was to reduce ESS minimum SOC down to 50%. When it gets that low, the next day it charges in bulk and absorption mode again and jumps from 50% to 90% SOC in one hour !
What is wrong here and which setting could improve this behaviour ?
Thanks for your help.
Daniel