Battery issue

[Prinzoo1]

I bought a new battery at bmw dealer on June I tryed to start my car today the battery was flat what could be the cause of that, and it's only one day whereby I did nt drive the car

 

[sash]

How long is a piece of string....
:fencelook:

 

[Redshert]

... go back to your dealer and beat them with it

 

[LordPhoenix]

Battery or Alternator

 

[bmsportzn135i]

Did they code the battery for you?
Take it back and complain!

 

[S1NGH 001]

Possibly incorrect battery size :thumbs: