DBTech 175 Watt Portable Micro Power Inverter With USB Port - 12v AC to 110v DC Car Plug Converter For Your Ipod, iPad, iPhone, Tablet, PSP, DVD Players Laptops Netbooks And cellphones
doesn't fit in all sockets.  worked in an older GMC, that was a cigarette lighter, but won't fit in sockets i have on newer vehicles that the sockets are labeled as power outlet.