It charges up to 3 devices at the same time and is compatible with all smartphones, as well as iPads.

One iPhone needs about 2000mAh to charge fully - SunPower can hold up to 30000mAh, which can fully charge 15 iPhones. Not only that, SunPower is solar powered and can charge your devices when you're in the car or on the plane, by simply placing it some place where day light is available. 

In addition, it fits in your pocket and is a life saver when travelling, camping, backpacking and during outdoor activities. It features an in-built flashlight that certainly comes in handy. That's what I call hassle-free!