Depending on your iPod model it may or may not charge. It should charge though. For my 08 M3 w/t the older iDrive it works fine.. The car battery issue well the car is smart enough to know these things and it wont just kill the battery. & keep in mind it's a car battery and you're running an iPod not a small country. jk jk
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2015 Porsche 991.1 GT3
2015 F80 M3 -- Individual; Space Grey
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