Interesting idea. Well this product is already in the market. A solar-powered iPhone case that would fully power iPhone within 3 hours. But I am not sure how good this would be. Here is more on this:
The Leather Case built-in Solar charger for your iPhone 2G/3G. You can charge your iPhone Anytime & Anywhere. Let Us to Protect Our World, Just Charge your iPhone through CLEAN & FREE Power Source!!
Features:
- Lithiumion polymer Battery capacity: 3.7V 1500mAh
- Output voltage: 5V (max)
- output current: 600ma (max) + solar battery 100 (max)
- Charge voltage: solar battery 6V USB/DC 5V
- Charge current: 100ma (max) + 500ma (max)
- Charging ime: less than 3hours
- Peak power supplied by photocell: 0.61W
- Size: 125mm x 64mm x 25mm
- Weight: 100g

(2 votes, average: 4.00 out of 5)
