NOVELTY - Electrical energy generator stack (60) comprises two bi-polar plates, each has substrate and channel field formed into the substrate and located in a central portion of the bi-polar plate. Spacer(s) (100a-c) is attached to perimeter portions of the bi-polar plates. It forms a socket between the two bi-polar plates. A membrane electrode assembly is disposed in the socket.    USE - For electrical energy generator, e.g. fuel cell or micro fuel cell that is used in, e.g. notebook computer or portable electronic devices.    ADVANTAGE - The bi-polar plates are manufactured with high throughput and low cost. The spacer allows the bi-polar plate to be machined with one depth for each face (e.g. just one depth for the channels on that face). The fuel cell stack manufacture and assembly can be simplified by forming a bi-polar plate from two (initially) separate sheets because each sheet is a two-dimensional part thus the number of permissible manufacturing methods for creating each sheet opens, which increases manufacturing flexibility, increases options for reliable manufacturing, and reduces cost.    DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for a method of manufacturing the above stack for use in portable electrical energy generator. The stack may comprise three bi-polar plates. The first plate has substrate, anode channel field formed into the substrate and located in a central portion of the plate, and a cathode channel field formed into the substrate and located in a central portion of the plate. The second plate has anode channel field formed into the second substrate and located in a central portion of the second bi-polar plate. The third bi-polar plate has cathode channel field formed into the third substrate and located in a central portion of the third plate. A membrane electrode assembly is disposed in the first socket. Polymer element(s) attaches the first plate to the second plate and maintains a compression force on the membrane electrode assembly.    DESCRIPTION OF DRAWING(S) - The figure shows a fuel cell stack.    Stack (60)    Spacers (100a-c)    Cathode manifold (106)