This is overkill for your basic charging needs. But it's a godsend for some real on-the-go juice.
Dig through your gear bag real quick. How many portable batteries do you have in there? How many watt-hours of juice are stored up in those little plastic housings?
Now think about just how limited those things are. They're good for charging phones, for sure. And maybe a USB-powered laptop, if you're rocking something recent. But that's about it, right? If it doesn't use something USB-based, you're probably SOL.
Full story from the WindowsCentral blog...