Gizmodo reports: [edited]
We've been promised an exciting future with gadgets perpetually powered by magical fuel cells, and a company called Lilliputian Systems is taking the first steps towards tomorrow with its fuel cell-based USB charger.
Unlike backup batteries which have to be plugged into a wall, the fuel cell charger uses butane-filled cartridges — about the size of a cigarette lighter — to generate power.
Each cartridge is able to recharge a dead iPhone twelve times. The fuel cartridges are allowed on planes.