[SAJ_1982]

No of course not. Im hyperthetically saying what 'if'? Say 5 years down the line when batteries tend to come to the end of thier lives what would happen then?

Battery in Audi cars tend to be very good. My A4 is 7 years old now and still has the original battery. Had it checked by the garage at the last MOT and they said it was still running at near full capacity.