The Direct Methanol Fuel Cell made by the world leaders in fuel-cell technology for handheld electronic devices Toshiba Corporation and having dimensions 22 x 56 x 4.5mm (maximum of 9.1mm with fuel tank), is the smallest of its kind in the world. Designed for integration into devices as small as digital music players, Toshiba’s DMFC outputs 100 miliwatts of power, the prototype is efficient enough to power an MP3 music player for as long as 20 hours on a single 2cc charge of highly concentrated methanol