This is right from the DIY article.

"Other alternatives to consider are the Sears
Diehard International (approx. $109), AutoZone's Duralast (approx. $75), and NTB
(Exide). Diehard International and Duralast are actually
the same battery - from Johnson Controls. The Duralast comes
with an external vent extension for fitting a BMW."


I called autozone and they got a duralast gold for $144 +12 core. Has the price gone up that much or is this some other perhaps upgraded battery?!?!

So if i disconnect the battery will I have some stereo issues or other problems? Can someone enlighten me before I disconnect the battery and fry my car because of some silly BMW specific procedure.


I have a charger that i can hook up to the posts under the hood so it doesn't lose any power if I must.

Thanks,

D