NOVELTY - Fuel cell system comprises a base portion, at least one fuel cell membrane electrode assembly, a fluid supply channel including a mixing channel and at least two fuel-bearing fluid inlets, an exhaust channel including a water recovery and recirculating system and a number of electrical components.    USE - The fuel cell system is used for providing power to a portable electronic device.    ADVANTAGE - A single fuel cell or a number of fuel cells can be formed on a planar surface, thus allowing higher voltages and currents to be gained on a single planar surface. Spent fuel is partially separated so that useable by-products e.g., water can be recirculated, thereby providing for less consumption and replenishment of a water supply. The system is semi-self contained and is not orientation sensitive, thus providing for ease in moving the system, such as when providing power to a portable electronic device.    DETAILED DESCRIPTION - Fuel cell system includes at least one fuel cell membrane electrode assembly (16) on a base portion (14) which is formed of a singular body. A fluid supply channel (32) is defined in the base portion and communicates with at least one fuel cell membrane electrode assembly. The fluid supply channel includes a mixing chamber (36) and at least two fuel-bearing fluid (34) inlets. An exhaust channel (38) is defined in the base portion and communicates with the fuel cell membrane electrode assembly. The exhaust channel includes a water recovery and recirculation system. The exhaust channel is placed apart from the fluid supply channel for exhausting fluid from at least one fuel cell membrane electrode assembly. The fuel cell membrane electrode assembly and the cooperating exhaust channel form a single fuel cell assembly. A number of electrical components are formed in the base portion for electrical integration of the fuel cell assembly.    DESCRIPTION OF DRAWING(S) - The drawing shows a simplified sectional view of a number of direct methanol fuel cell devices formed on a single base portion including a number of microfluidic channels.    Fuel cells (12)    Base portion (14)    Fuel cell membrane electrode assembly (16)    Fluid inlet (30)    Fluid supply channel (32)    Fuel-bearing fluid (34)    Mixing chamber (36)    Exhaust channel (38)    Water/methanol mixture (46)    Carbon dioxide gas (48)