NOVELTY - An air breathing direct methanol fuel cell pack comprises membrane electrode assembly, fuel supply unit, upper panel, current collectors, conductors and lower panel. The membrane electrode assembly forms single cells with electrolyte membrane, anodes on first plane of the electrolyte membrane and cathodes on second plane of the electrolyte membrane corresponding to the anodes. The second plane is opposed to the first plane.    USE - Used for portable electronic devices.    ADVANTAGE - Capable of fully inducing external air into it to be evenly supplied to electrode surfaces. It is capable of smoothly supplying air into cell pack and has maximized contact area with external air. It can suppress induction of external foreign matter.    DETAILED DESCRIPTION - An air breathing direct methanol fuel cell pack comprises membrane electrode assembly (MEA) (11), fuel supply unit, upper panel (22), current collectors (11c, 11e), conductors (11f) and lower panel (211). The membrane electrode assembly forms single cells with electrolyte membrane, anodes on first plane of the electrolyte membrane and cathodes (11b) on second plane of the electrolyte membrane corresponding to the anodes. The second plane is opposed to the first plane. The fuel supply unit faces the first plane of the MEA and supplies liquid fuel to the anodes on the first plane of the MEA. The upper panel faces the second plane of the MEA. The upper panel has air vent holes (221a) through which air passes and air channels for connecting inner parts of the air vent holes. The air channels are formed at the internal surface facing the MEA. The current collectors are on the cathode and anode of the single cell in MEA. The conductors are electrically connecting current collects to form electric circuitry amount the single cells. The lower panel forms a housing for accommodating MEA and fuel supply unit in cooperation with the upper panel.    DESCRIPTION OF DRAWING(S) - The figure shows the device.    Membrane electrode assembly (11)    Cathodes (11b)    Collectors (11c, 11e)    Conductors (11f)    Wall body (21)    Upper panel (22)    Supply hole (122a)    Lower panel (211)    Air vent holes (221a)