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      04-12-2012, 12:47 PM   #5
nchan50
Second Lieutenant
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Drives: 2009 JzB/FR e92 M3
Join Date: Feb 2011
Location: NYC

iTrader: (0)

I always leave mine plugged into the armrest usb and have gone a couple weeks without driving (it's parked in an NYC garage). Never had problems so if there is any power usage its probably minimal.