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BlueSmart IP22 12V/30A stops charging while batteries are at 82% SoC

Hi!

Since I have installed new AGM Batteries, these new ones (got them used) are not charging above SoC=82% with the Bluesmart (but they do with Solar Chargers).

I have 4 Batteries (12V 150Ah each) in parallel, so 12V 600Ah. I tried the normal (14.4V) mode and the high (14.7V) mode. After 24h of charging, the BlueSmart switches to "storage mode".


Purple arrow: start of automatic charging algorithm at "high mode" (14.7V) >> BULK

(not sure) between purple and red arrow: maybe ABSORPTION

Red arrow: (should be) start of FLOAT

Orange arrow: start of STORAGE mode (SoC is dropping because of a few small loads...)


...and now it gets interresting:
Yellow arrow: if i switch the BlueSmart to "powersupply"-mode at maually 14.7V, the batteries are charging again at ~10A


2023-10-23-181705-002.jpeg

I'm not sure but I think the voltage-drops in the chart are just for the bluesmart to check if the batteries are holding the voltage for a few minuites to switch to the next charging algorithm??


Battery specs: Wing-ESL150-12FTHT.pdf

Thx

AGM Batterybluesmart ip22
2 |3000

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