I’ve been experiencing a phenomenon for a few days where the SOC (State of Charge) suddenly jumps back to 100% at night. I can’t really identify what’s causing this. I’ve checked all the connections of the block modules. What can I do to isolate the problem? My system had been running smoothly for about 4 years before this.
No one has any idea?
Hello @Breakyman , as discussed elsewhere, I only know of two situations where SOC is reset to 100%:
- in Hardware > Shunt settings you enter the capacity of the pack. There you also see the first Recalibrate SOC-reset setting. Once your charge flows over 101,5%, SOC will be reset to 100%
- final SOC calibration is done based on minimal Bypass value/session for all cells under Control-Logic > Charging. This means ALL cells need to reach a certain bypass value before SOC is reset to 100%. Actual bypass voltage is found in Hardware>Cellmon. This means, if you have one misbehaving cell (or bad connection), you will never enter the Bypass Complete phase. Monitoring of the bypass value per cell is found under Telemetry>Cell-Info
I must admit your situation seems to be different.
Thank you for your comments. I checked all connections again and found no errors. The bypass is also carried out cleanly. It doesn’t happen when charging but at night when little power is consumed, then it just goes to 100%.
Also Cell Info everything is clean:
I don’t know where else you can look to find errors?
I’m sure @James has an idea what could be happening here!
I have the same issue. It jumps back to 100% while discharging, so no Re-calibration should happen. Sometimes it’s from 90% to 100%, sometimes even as far as from 70% to 100%. Happens almost every night:
Well, the problem occurred after I expanded my battery from 2 blocks (32 cells) to 3 blocks (48 cells). I couldn’t really solve the problem here. All connections were checked and also software New installations brought no changes!
Only when I put my 4 block (64 cells) into operation did the problem disappear! Now it’s been approx. 2 months again perfect, as with the first 2 blocks over 2 years without problems. Maybe a problem with Blockmons and 48 cells. It must be a software calculation error because only the SOC is jumped…
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I went back to an older version: 2.17.55
no error for 7 days since then