I can’t get my S to charge 100 percent. It stops at 98 percent. And if I tried to charge to 90 percent it stops at 85-88 percent. Is this normal for a 2014? I have 92k miles on the car. And this charging at home or anywhere. Service center says it’s nirmal and my batter is ok. I don’t feel it’s ok but then again I am still a rookie.