[samoual]

Hi there i'm having different issues with my X3 but in simple words...

Is it normal that the alternator is charging at 15.3V?

The battery was reading 11.7V at 30F (outside cold temperature), so I decided to change it for a new battery which read 12.6C at 30F.

Then when I started the car as it did with the old battery the alternator is charging at 15.3V

This can't be normal....

The car has now 100 000 miles.

Thank you.