I got the blue led shining (low cell warning) on a VE.Bus BMS (the old one).
Yesterday I took the battery apart (Victron 200Ah, non-smart with 4 winston cells) and demounted the BMS. All cells were equal at 3.44V. Found some oxidation at the negative pole and thought that was the issue (BMS reading one low cell due to oxidation/bad connection).
Put everything together and connected it to the BMS again, blue led (low cell) is still active. :-(
Also searched for bad connections after this without result.
Any ideas?