There is really nothing special from the BMW stock battery and a battery off the shelf at a local auto part store. The important things are to choose the one with the best warranty and at the right price, and most importantly to match up it's size ( cranking amps etc..) to the OEM battery.

Answered by bluelightnin6 (expert)
17,236 answers provided

What about the tube on the side, RC, AH, etc. After market batteries do not come close to the same specs as original:
570A
12V
70AH
120RC
570CCA

Response from griphon
1 question asked

Autozone sells a duralast battery with an 8 year warranty for your vehicle for 135 after a 12 core charge return. it is vented to outside of the vehicle, made specifically to fit into the trunk location of your BMW. Autozone Part number is H5-DLG

Answered by bluelightnin6 (expert)
17,236 answers provided