There is absotively posilutley no reason why you should end up with a dead smartphone or tablet. Never leave home without one of the many pocketable power packs available for around $100 or less, which provide plenty of extra juice for your portable gizmos and gadgets. Here are the best ones from CES.
Battery cases are dumb – they don't do anything except sit there and supply power. But this 1500 mAh iPhone 5 battery case ($100, spring) from a new company called Endliss (its Web site isn't even finished) is smart. On its rear is an 8 x 16 array of LEDs that display graphics and messages in red, white or blue that can be configured through an iPhone app. The LED array also is touch sensitive – you can even draw on it with your finger. But that's not all…