The 4Patriots solar power cell backup is a nifty little set up. I can charge your phone about 2-3 times off of a full charge and can charge two devices at the same time. The solar panel is 1.5w which isn’t a whole lot but can charge your phone in an emergency if need be.
The cell comes with 2 cords. A micro usb that it charges with and a Iphone charger. For $30 i have really enjoyed this product so far.