Batteries are not charging because Smart Solar Controller is going into Float mode at 85%

Q&A and troubleshooting
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1

My batteries are not reaching 100% because my charging solar controller and charger are prematurely go into float mode.
In November 2023, switched to all Victron BMV 712, 30A blue smart charger and Smart solar controller when I installed 4, Lifeline, AGM, 6v batteries. I selected optiion 2 on the solar controller and didn’t dial in the settings specific to Lifeline batteries.

They have been working well, but when I returned to my boat after 18 month absence, I thought it was a good idea to synchronize them for accuracy.When batteries reached 100% and the amps in, reached ), I pushed the synchronize button.I also used the “expert” mode on the BMV and Smart Solar to reset the settings specific to my batteries, Thats when the fun started.

For the last 3 days, my Smart Solar controller has gone into Float Mode at around 10 AM when the state of charge was between 80 and 86% state of charge and amps in, slowed to 1.5 to 4 amps instead of charging normally at 17amps. If I can I will upoad screen shots of my BMV and Smart Solar controller that I took at 8AM this morning.

If anyone can help, it would be most appreciated!!!

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2

Pls post all relevant settings of the chargers and bmv.

BTW, the bmv does not control the charger, the charger runs solely on battery voltage, not on SoC.

3

Please check any Absorption Time setting in the MPPT..

4

Has the system been running/self maintaining while you were absent or just fully disconnected?

For thelast 30 days show the battery min and max. Maybe it just never has been charging correctly.

Although this makes them sound like they may not have been maintained right anyway according to the manufacturer so possibly they are now not well.