One day you can really buy battery refill pack from vending machine like buying a can drink. The liquid fuel cell powered mobile phone can be refilled anytime when the battery run out. Media broadcast is one of the important entertainment feature for a phone and Japan is seeing Fuel Cell phone as a good alternative way of extending battery capacity. Carrying a fuel cell around might be dangerous and you wonder if it will explode, the safety container will be definitely tested in the lab before it reach consumers.

The W32H is one of the prototype created by Hitachi

The liquid container is fit at the back of the phone

To refill the "fuel", just inject the fuel from a tube. You could probably carry few tubes in your bag.

k-tai.impress.co.jp