This charger works just as the manufacturer says. Charges 2 drained AA batteries in 3 1/2 hours in full sun, but takes longer in partial sun. Charging rate is directly related to quality of sun light. It was also able to charge my PDA phone. The charging is real slow here but it does charge it. However, for some reason I have to have the phone turned off in order for it to charge. The grommets happen to be spaced perfectly to attach the panel to the lid of my pack via the four gear loops at the… Full review
PowerFilm make solar panels.