I’ve noticed weird things in the last two days.
OK granted, perhaps plonkster is on to something - one of my automations (the one that runs the geyser from the grid) probably went AWOL - so my grid-set point was set to 5000w from some time yesterday. I found this out tonight and reset it to it usual 20W and the battery started discharging.
But during this time my battery voltage would go up by itself even while the SOC was 100%:
You can see it was fairly stable at 52.7v up till around 11:00, then it just went up to 53.87v.
On the highest cell levels you can also see this “bump” up during that time?
I haven’t seen this behaviour before.
Edit: versions:
2x of these, the same firmware/software levels:
EDIT 2: OK, it seems to be related on my grid set-point - the first spike happened yesterday when my Home assistant set the grid set point to 5000w (the reason why I set it is to allow the 4kw geyser to run “from the grid” without discharging the battery - during periods of low solar yield. Something went wrong and it never reset it back to 20w. I also didn’t have loadshedding during this time.
