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      09-27-2011, 07:17 PM   #3
JimD
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Drives: 128i convertible
Join Date: Apr 2009
Location: Lexington, SC

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My 2009 128i often goes several days sitting idle. For several weeks, it has not gone more than about 10 miles each way. Battery still works fine. I would charge it up and if it does it again, you probably need a new battery. I would expect it to last longer, however. You can get a battery wherever you want but the bimmer wants you to tell it you replaced the battery and what type you replaced it with. I charges differently depending on the age of the battery and the type. I think you can program it yourself with a BT tool.

Jim
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128i Convertible, MT, Alpine White, Black Top, Taupe Leatherette, Walnut, Sport
Ordered 5/22/09, Completed 6/4/09, At Port 6/9/09, On the Georgia Highway 6/13/09, Ship Arrived Charleston 6/24/09 at 10pm, PCD 7/21/09
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