5oo amp victron shunt stays on 100%charged

my victron shunt is is set on carged to 13.2v but shows voltage @ 13.6v and shows 100% charged it is now on 12.5 and still shows 100%

There are so many threads about the BMV/SmartShunt, please use the search function.

It’s most likely a wiring or configuration issue.

Take a look at this:

And the manual: