mopatin | Photovoltaic Solar Charger for Smartphones and more @tinkerbit | Uploaded 10 years ago | Updated 7 hours ago
Several tests with this charger I just bought from:

http://www.banggood.com/buy/SKU091977.html

It is a nice charger, but, at least mine, can't charge the iPhone 5s. It charges perfectly on HTC and one Samsung smartphones, even in the shadow.