I've been a TOMTOM user for a few years. I have two, an older one with a smaller screen and a newer VIA 1539 TM. The internal jack seems a little flaky right now. It's charging in the car at the moment. I'm going to rewire the Power Port / Cig lighter socket so it's always on. I have a 99 Volvo and my 2002 Ford Crown Vic's is always on.