NOVELTY - A hydrogen generation system comprises a fuel cartridge (100); a balance of plant module (200) in fluid communication with the fuel cartridge; and a hydrogen outlet in fluid communication with the fuel cartridge; where the fuel cartridge comprises: a hydrogen separation chamber (120); a fuel storage chamber (110), including at least one individual fuel packet (102) containing a solid fuel; and a fuel regulator (112); and where the balance of plant module comprises a fuel pump driver (222).    USE - For hydrogen generation as fuel cell power system (claimed).    ADVANTAGE - The fuel cell power systems are readily refuelable, and therefore can contain a 'replaceable' fuel cartridge module, and a 'permanent' power module. The fuel cartridge module is disposable, or is simply refillable. The power module comprises the fuel cell stack and related balance of plant components. The hydrogen generation system's balance of plant with units for fuel regulation and other controls may be incorporated in the power module or is a separate component. The elements in the power module are intended to last the lifetime of the power production device.    DETAILED DESCRIPTION - INDEPENDENT CLAIMS are included for the following:    (1) a fuel cartridge comprising a hydrogen separation chamber; and a fuel storage chamber, including at least one individual fuel packet containing a solid fuel;    (2) a fuel packet for use in a hydrogen generation system to hold a solid fuel and is capable of expanding to a capacity sufficient to hold a predetermined amount of liquid;    (3) a power system comprising a fuel cartridge module; a balance of plant module in fluid communication with the fuel cartridge module; a water management module (300) in fluid communication with the balance of plant module; a control module in electrical communication with the balance of plant module; and a fuel cell power module in fluid communication with the balance of plant module; and    (4) a method (m1) of hydrogen generation involving storing solid fuel in individual pre-measured units; delivering liquid to the individual pre-measured units, where the liquid is directed to a single individual pre-measured unit at a time; rupturing a pre-measured unit; forming a fuel solution by mixing the solid fuel with the liquid; reacting the fuel solution to form hydrogen gas and a byproduct; and separating the hydrogen gas from the byproduct.    DESCRIPTION OF DRAWING(S) - The figure shows a fuel cartridge with individual fuel packets.    fuel cartridge (100)    individual fuel packet (102)    fuel storage chamber (110)    fuel regulator (112)    hydrogen separation chamber (120)    movable partition (130)    balance of plant module (200)    fuel pump driver (222)    water management module. (300)