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Charging my new battery (recomended by dealer) with a Bluesmart IP65 12V/15A charger connected directly to battery, set to Lithium mode & 4A before installing it in my boat. Dealer says all is OK, just install the battery/BMS etc, dont worry...........any opinions about that advice. When charger switched off, 5 hours later the cell voltage is perfect 3.32 V on all cells & "Ready for use"
I do not understand what your issue fully as the description is unclear.
However from your screen shot Cell one's voltage is too high compared to the others. KEEP this voltage under 4 volts , the internal BMS will slowly reduce that high voltage on cell one, then when its reduced to say 3.7 charge it again, and stop at 3.90v or when it turns the charging off
you may have to do this quite few times until that high cells voltage reduces and the other cells slowly increase. (this will take time), or just leave it connected to that charger and after a few days it will balance its self. as it will turn the battery on and off charging as needed.
All cells should end up at around 3.6v when every thing is in sync and the overall voltage is 14.4
the issue is that all 4 cells are NOT in balance voltage wise, once you get them into balance then you should be fine from then on.
Hi Paul, thanks for your reply. My question is about it is normal that the cell can get so high, that the battery disable charging by itself?......Should i just let the charter continue charging with 4A and just let the battery (when it get out from "Busy" mode) take care of itself, until it eventually balance itself?
Well Normal is a mute point,
Its a new battery and it should be balanced to start with hmm But its not,
So just watch it and its internal balancing system will correct it, I wont cause any harm as long as the internal BMS keeps working as it should, and the cell should nevery go over 4 volts
So keep a eye on it and over the new week or two it will balance it self out and you will have a great battery.
