Will I discharge my battery from the 12v socket in the glovebox? 2010 C300 w204
I'm new here and just recently switched from my 3 Series to a 2010 C300 Sport 4matic. I absolutely love it so far.
I had a straight forward question. If I leave a Bluetooth device plugged into the 12v socked for transmitting to the aux located in the glove box, will I discharge the battery? I wasn't entirely sure if it's "off" when the ignition is off. And even if it's "off" is it truly off?
Thanks!


