"You have a dying cell phone in your hand right now as you read this." That line from the Battery on the Go website gets straight to the point of the issue all cell phone owners deal with at one time or another. The company's staff of admitted gadget lovers doesn't ever want their clients to be in a position where they can't navigate an adventure, capture a moment, or contact a friend because their smartphone died. As such, their signature product, the PowerBar, is a portable battery charger that can power an iPhone 5 from one to eleven times on a single charge, depending on the model. The lightweight, aluminum design can also charge tablets and its USB capabilities allow it to be charged by computers or USB-compatible wall plugs.