replace the battery in my 2019 F-150 as the Start-Stop system refuses to run

I am wondering if I should replace the battery in my 2019 F-150 as the 
Start-Stop system refuses to run, it says that it is continuously 
charging.  But it cranks the engine just fine.

I don’t know if I should mess with the warranty at the Dealership.  I 
don’t want to blow half a day there.

Lynn