For my high school science project I am planning on using the VW battery chargers. Max 3.2 watts, 18.8v, 13.8v regulated at the plug. (cig adapter). 170 ma but as high as 200ma according to one seller. size 9 1/4" x 12 3/4". I am planning on building a solar car using these. They are readily available and used. I know I could get more bang for my buck by using larger panels but I want to show the process and how these small panels can be recycled into something bigger than what they were originally intended for.
Sorry about the posting problem, I though my computer had a virus or something, one second my post was up then it was gone.