I was looking at these yesterday. Their website says they are on sale.

I am keen on getting some type of solar recharger for my laptop. It contains all sorts of useful PDFs about survival that I would love to be able to take with and use if the SHTF. Also a good source of music and entertainment when camping if I knew the battery could be charged.

I would appreciate hearing the other board members reviews for charging/using laptops with these.