how is it now, after a few hours more sunshine? It’s a big battery, so it might just take a while.
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max was 2.48V in the meantime - weather is not that “sunny” at the moment
the increase is very very slow - now I have 2.55V
hopefully the decrease is also very slow.
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no - the decrease was fast - when I look a that graph battery was never really loaded even when the weather was sunny
so I don`t know if I get the right batteries
that looks bad, it discharges more during the night then it charges during the day.
yes very bad - just replaced the battery again - (had ordered two) and double checked all connections - works fine again at the moment