I picked up a Black and Decker power inverter the other day at Walmart for $34.99 for my laptop in my truck (they can run on a 100 watt inverter), and thought to do a search on line to see if it was a good deal. I found Amazon had it for $17.99 with free shipping. I've been using the one from Walmart for a few days, and it works great. I'll return it when I get the one I ordered from Amazon in a week. MSRP is $39.99. Here's the link: http://www.amazon.com/Black-Decker-200-Watt-Inverter-VEC1045BD/dp/B000EJQIX0/ref=pd_bbs_sr_6/102-6468115-5843307?ie=UTF8&s=hi&qid=1180100956&sr=8-6 Amazon.com: Black & Decker 200-Watt Inverter #VEC1045BD: Home Improvement