Instead, Zimmerman has designed a simple do-it-yourself solar USB charger that fits cozily in ... much cheaper than the $140 factory-purchased model! + Instructables Via Solar1 Images: Instructables ...

The Sun Drive is a combination solar panel, USB drive and multi-charger and as you can see from ... charge-only unit or $31 for the 4GB memory model, it’s well priced too.

After months of testing, we chose the BigBlue 28W as the best solar charger ... a 5-watt model available on Amazon for only $24, but it produces less than an amp of power to the USB ports, making ...