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      01-29-2013, 10:42 PM   #10
Fastfission
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Drives: 328xi sedan monaco blue
Join Date: Jun 2012
Location: southern Idaho

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My 2008 has been doing the same thing lately. I do mostly short (about 5 mile) commutes, and I've found that this doesn't let the battery get charged. A few hours a week on the charger, or a quick 20-30 mile run on the freeway seems to get things back to normal, at least for about a week. I am planning to get a battery minder, and I figure that there's probably a battery in my future this summer.

The cold weather does reduce battery capacity (we've been mostly around -15-20F for the past month).
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