I started a thread about AA's without seeing this one. I apologize for the duplication.

I bought a solar panel charger from Harbor Freight, go to the website and use item number 41427-2VGA to view it. It cost $12. It charges by solar using various attachments and also charges two AA batteries in the back.

I am going to strip one of attachments and solder a USB connection to it so that I can charge my cell phone and iPod which both have USB connecting wires currently used with my laptop. When I do this I will post my findings.

Its a cheap but sturdy unit and if in the end I can only charge AA's then with the year round sun in Arizona, I will still make out well.