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Hi!
I have a new LFP system with with Quattro 48/5000/70-2x100 and 4*Smart Lfp 25,6 200Ah. What I see when charging is the system only switches to absorption for a short time and immediately back to bulk, never to float. Is this normal or expected? The charger voltages are the default from the Quattro. Thanks
Yes, this is how the voltages and current look like.
Yes, almost full, charging from grid, limited to 6A@220V.
I see no alarms online in VRM
-are these the only components in the system?
-what did you set in the Quattro settings? (screenshots of VE-configure)
Components: Quattro, CCGX, BMV, VE.BUS BMS, Color Control GX, Digital Multi.
Charger setup:
ok, next thing to check: BMS
I -think- your charge voltage is so high your BMS stops the charging due to one cell being charged too high.
I don't know if you can see separate cell-voltages? this might give a clue.
Other way to try: lower absorbtion voltage to 56 V and see if this helps.
ok, it went into absorption. Do you think that the cells will equalise and I can turn it back to the recommended values?
I don't know, I personally like to not charge above 3,45V per cell (55,2V) but I don't know if there is a minimum voltage to be reached to let balancing start (should be in the manual)
Actually, tha's why I ask. According to the manual, it should be 56V, so 56V is the minimum required. That's why I was asking if one should try to go a bit above.
Batteries must be regularly (at least once every month) charged to 14V (max. 14,4V) in order to fully balance the cells. Two or four batteries in series should be charged regularly to 28V resp. 56V
