I've seen a few of these devices advertised recently [solar charging ], one that unfolded like a fan and had three sections to it. Didn't mention it could be used for camcorder batterys , there mainly for pda's & mobile phones .I wonder if you could modify one , really depends on what output it can give.I have just bought a small device called Scotty , that will charge any device that would normally plug into a USB on your Pc.Scotty contains two batterys and will charge phones , PDA's and the like. You can were it on your belt or on a backpack .Good idea, but I too would like to be able to charge camcorder batterys etc by solar energy ,so I think they would need to have a higher power output . I will make some enquireries.
just done a search and found this :
http://***.solarenergyalliance.com/
check out the Solar Gagets section . Got some nice
chargers some with varible outputs and battery charging models alot cheaper than I paid for mine. :-(