I've noticed that when I use the TomTom app on my iPhone while plugged into my Griffin Powerjolt SE, the battery will actually drain. It seems to drain more slowly than when the iPhone isn't plugged in at all, but nevertheless it drains. From 100%, my phone recently dropped to about 75% for an hour and a half car ride. If I just leave the phone in sleep or playing the iPod, the phone charges. Is this something anyone else has observed? Is there a fix for this? Also, I'm realizing now that I've always been plugging into the cigarette lighter since that's closest to the dash. Should I be plugging into the socket labeled 12V Power Port?