In the past few years, we have covered a whole host of advanced solar chargers for iPhone and other gadgets here. The Renogy E.Flex10 10W Solar Charger is also worth a look. It is a thin, compact charger that you can take anywhere to charge your iPhone with sunlight. Its monocrystalline solar cells combine with auto optimization technology to continuously charge your devices.
The E.Flex10 solar charger weighs only 8.7 ounces. It can be easily attached to your things with suction cups and carabiners. It also has overcharge protection built-in.[HT]