Settings in my Orion DC-DC charger, SmartSolar controller, and SmartBMV monitor are such that my Victron SmartLithium batteries should charge to 14.2 volts, but charging seems to stop near 13.5 volts. At that point, the BMV shows SOC is 100%.
I don’t believe this was always the case. I’m fairly certain voltage used to reach 14.2 volts when SOC used to show 100%.
What might have changed, or what might be wrong?
The batteries all say they are balanced and happy.
In the mppts you could probably check min and max and see if they reached absorption or not.
Are now in winter, you solar may not be generating enough power to get them right up to 14.2V. Remember, if the batteries are at 13.4V to 13.5V they are pretty well full. 13.4V with a small current draw is going to be over 90% full.
One thing is your BMV “Charged Voltage” may not be set ideally for solar in winter and going to 100% too quickly. Have a look at the link below
Thank you for the expert advice.
I confirmed in my MPPT that my batteries did reach absorption voltage, 14.2V, every day of the last week. Nice!
The linked article is excellent. After reading it, I increased my Charged Detection Time to five minutes.
I’m all set.
