Does the cord draw power when phone is not plugged in?
My car battery was drained and the only thing I could figure out was that this cord was plugged in for a couple of nights while the car sat unused. Does it continue to draw power even when a phone or other device is attached? Obviously it does draw power when it is first plugged in, because the lights run for a while, then it appears to go to sleep. So, in that sleep mode, does it still draw power? How much?