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New batteries 4x100Ah - Charger: Quick 40Ah with 14,1v in absorption and 13,5v in float mode - BMS Smart CL 12/100 (14,2v max charge) - The charger works for about 2 hours and then goes in float mode. I tried to turn off/on the charger, but in few minutes goes back in float mode. What's wrong? Thanks2024-07-05_Mancato bilanciamento celle.pdf
Switching VictronConnect to english would be nice if you ask in an english forum :)
The problem are not the batteries it is properly the charger.
The charger needs to hold a voltage above 13.8V for a while for the balancing.
The first balancing can take a hour our two.
I'm not on a boat, I made hard copies of my cell phone (and yes, I'm Italian). The charger provides 14.1v, which is more than 13.8. Thanks, but it remains a mystery...
On your screenshots it doesn't look like that the charger is reaching more than 13.8V.
The charger needs to hold a voltage above 13.8V for 1 or 2h for the balancing.
You have a small constant discharge once the system goes into float which won't help.
Try increasing to float voltage a little.
If you can post a wiring diagram and/or a picture of the batteries/wiring it would help
After some test, the answer is in the charger, which is programmed to go into float at 13.5v as soon as the charging current is less than 20% of its capacity, i.e. 40Ax20%=8Ah. I also tried to put a load to force the charger to increase the charge, but the same load decreases the voltage preventing it from reaching 14v. I will have to change Charger. Thanks to those who responded.
