This is my review of the X Dragon 20w 5v Solar panel charging system that I purchased on Amazon. It works great and charges plenty of different devices very quickly however certain devices it will not charge directly like my Samsung Galaxy S5. For that I would suggest a battery bank like the Anchor 7 or something similar. Link to the XDragon Below
http://www.amazon.com/X-DRAGON-Efficency-Technology-Smartphones-Foldable/dp/B00NGKPX4Y/ref=sr_1_1?ie=UTF8&qid=1445821190&sr=8-1&keywords=xdragon+solar
Post time: Feb-10-2017