from this thread:
I didn’t see this mentioned but a “12v battery “ is technical in a deep state of discharge at 12.1-2 volts.
The reason you didn’t see it mentioned is we weren’t talking about that.
The proper input charge voltage should be 13.8 volts from your solar panels/ charge controller. A fully charged 12 v battery should have a nominal voltage in the range of 13.5 volts.
Are you making this stuff up? It is ok to misinformed. It is not ok to state misinformation as fact.
For newbies: Vabs and Vfloat should be set to whatever the battery manufacturer recommends. Full charge on FLA battery is measured with a hydrometer, and generally correlates with something like 12.7 - 12.8v.