http://www.solarjoos.com/products/

 

Just got mine today. Combination solar charger/battery unit. Comes with plugins for a variety of electronic devices (cell phones, iphones, radios) and is supposedly very durable (waterproof, shock proof, etc). It also got good reviews from a variety of online sources: http://www.wired.com/reviews/2010/04/pr_joos_charger/

 

Will add more after further testing.

Please do, I've been debating this purchase.

Unit comes with solar cell/battery charger + connectors for the PC and various popular cellphone types in a waterproof zip bag. You can attach the two together with a lanyard. You can also load power management software on your PC to see how it performed throughout the day, and while outside, you can see what your max solar output is. The solar cell has a glass top and a protective plastic cover on top of that to prevent scratches. Not sure if it is replaceable. Battery is also supposedly replaceable, but Solar Components has yet to offer one. Also has legs so you can have it sit up and get more direct sunlight.

 

Anyways, I tested it on Saturday: Took it down the shore to Belmar this weekend on a day trip to the beach. Used it to re-charge my GF's Droid 2. Went from 20% to 40% in about 32 minutes, using 40% of the battery on the solar charger (3 blinks on LED). However, the Droid can use up more power than the charger can put out... especially running Pandora and the GPS application. Once you shut those features off it can start charging at a decent pace.

 

After taking her phone off, I let it soak up some more sun, and the charger was back above 80% (5 blinks on the LED). Charged my iPhone 3GS from 60% to 85% in about 25 minutes... while using Pandora. Seems like it works better with my iPhone than my GF's Droid.

 

Also took it in the water and it still managed to work. I made sure to wash it under fresh water prior to leaving the beach though.

 

More testing to come. I like it so far though!