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      12-03-2012, 01:38 PM   #2
alexwhittemore
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Drives: 2009 Crimson 328i
Join Date: Oct 2012
Location: Los Angeles

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The USB port and lighter socket turn off with the car, so nothing is going to drain the battery while you're gone. That said, your options all either use the lighter socket or require occasional charging which is dumb.

Other than that, you could opt for something like a mobridge/dennon gateway/parrot MKi series.
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