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Sorry, 1stimestar. I fixed that link:
http://www.solar-review.com/reviews/read-review.cfm/id/22//

I have a Sunlinq 6.5W charger that folds up to a 5x9x.5" package. I got it to provide a trickle charge on my truck when I leave it parked for an extended time. Can hang from a backpack for charging...