NOVELTY - A fluid pump and a connector assembly comprises a first sub-assembly (15) having a first connector and a flexible diaphragm (54) in fluid communication with a fluid inlet (56) and outlet (58), and a second sub-assembly (22) having a second connector to connect to the first connector, an actuator (e.g. nitinol wire) (70) and a reciprocating member (48) coupled to actuator and contacting diaphragm when sub-assemblies are connected, in which reciprocating motion of actuator and member causes diaphragm to reciprocate and pump fluid from inlet to outlet without exposing fluid to second sub-assembly.    USE - For connecting fuel cartridge to a fuel cell system, in a fuel cell apparatus (claimed), which is useful for generating electricity useful to power electrical devices and to provide heat.    ADVANTAGE - Since the actuator and reciprocating components are located in the second sub-assembly, the manufacturing costs of the first sub-assembly can be reduced, enabling the fuel cartridge to be manufactured at a sufficiently low cost to be a single use disposable product. The first sub-assembly keeps the reactants entirely within the fuel cartridge, which reduces the chances of leakage and consequent harm to a user, or to equipment in close proximity. By locating certain pumping components, i.e. nitinol wire, plunger head, plunger outside of the fuel cartridge, the manufacturing cost of the cartridge is reduced. By sealing the pumping chamber with the diaphragm, the citric acid solution is not permitted to leave the fuel cartridge; this design minimizes the likelihood of damage or harm caused by acid leakage. Since hydrogen gas is generated only when the citric acid solution is mixed with the solid sodium borohydride, the rate of pumping entirely controls the rate of hydrogen gas production.    DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for a fuel cell apparatus comprising a fuel cartridge (10) having a first connector sub-assembly with a flexible diaphragm in fluid communication with fluid inlet and outlet; and a fuel cell system including a second connector sub-assembly having an actuator (e.g. nitinol wire) and a reciprocating member coupled to actuator and contacting the diaphragm when two sub-assemblies are connected, in which reciprocating motion of the actuator and member causes diaphragm to reciprocate and pump fluid from inlet to outlet without exposing fluid to second sub-assembly.    DESCRIPTION OF DRAWING(S) - The figures show a partial transparent side view of the fuel cartridge and a schematic, partially transparent view of the connector and pump sub-assembly and the fuel cartridge connector subassembly.    fuel cartridge (10)    connector sub-assembly of fuel cartridge (15)    connector sub-assembly of fuel cell system (22)    fluid inlet (56)    fluid outlet (58)    reciprocating member (48)    nitinol wire (70)    flexible diaphragm. (54)