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      11-28-2009, 12:45 AM   #23
That's what she said...
bigjae1976's Avatar

Drives: 11 E90 M3 Individual
Join Date: Mar 2006
Location: Milwaukee, WI

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Garage List
2004 BMW M3  [4.50]
2011 BMW E90 M3  [5.00]
2013 BMW 328i  [5.00]
Good info. I think these newer OEM BMW batteries are AGM (absorptive glass mat), correct?

If so, AGM batteries are much more difficult to bring back than a lead acid battery if they die. It takes a battery conditioner and about 24 hours. Just keep that in mind if you let the car sit for awhile.

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