cant tell you how many times ive been trying to get in contact with someone at Douglas Battery on the phone. I'm looking for a dealer in the chicago area around 60657. my orignal battery is dying ~11.7v from my 1999 528i, anyone in the chicagoland area have an idea on where to get them in my area?

there are several batteries compatible w/ e39
no need to buy stock one

there are several batteries compatible w/ e39
no need to buy stock one
Interstate MTP-93

Cheers !