PowerFilm USB+AA Solar Charger
This charger works just as the manufacturer says.
Price Paid: $90
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 corners.
I have had this charger for about 2 months now and have dropped it numerous times, scraped it up bushwhacking, and spilled tea on it and it still works fine.
I do see three potential drawbacks: 1) the battery door is hard to open so the potential to break it is high 2) there is no protective cover for the USB jack therefor the internals are readily exposed to the elements. (I put duct tape over mine) 3) the battery door has about 1/8th inch gap between the hinged side of the door and the charger body, providing a good place for the elements to enter.
Otherwise I have had good results so far with this charger and would recommend it to others.
Here's what other sites are saying:
Put the power of the sun to work when you have a dead camera, iPod, or other device with PowerFilm's USB + AA Solar Charger. Charge both batteries and small USB devices simultaneously using direct sunlight, or use fully charged batteries to charge your USB device, this compact charger uses flexible solar panels that are integrated directly into the fabric - resulting in less weight and no unnecessary components.
- Mountain Gear
The versatile PowerFilm USB+AA solar charger powers up both small personal electronics and rechargeable AA batteries. Its folding design makes it easy to slip in a pocket purse or pack. Fully charges 2 rechargeable AA batteries (included) in approximately 4 hrs. in direct sunlight; use the batteries to charge other devices when there's no available sunlight! Universal microUSB port makes it easy to charge cell phones, smart phones, iPods and other USB devices. Durable folding design is compact, UV- and weather-resistant for use in harsh outdoor environments. The PowerFilm USB+AA solar charger offers 3.6V operating voltage and performs well in hot, cold and cloudy weather. Folded size of 5.5 x 3.25 x 1.38 in. unfolds to 24 x 5.5 in.