NOVELTY - A power generator (100) comprises a hydrogen producing fuel (120); a fuel cell (110) having a proton exchange membrane (124) separating the hydrogen producing fuel from ambient; and a hydrogen storage element (127). The power generator further comprises a valve positioned between the hydrogen storage element and the hydrogen producing fuel and the fuel cell.    USE - As a power generator for generating electricity (claimed) useful to power devices, such as wireless sensors, cellular phones and other hand held electronic devices.    ADVANTAGE - The hydrogen storage element functions as a sort of hydrogen sponge that can quickly adsorb or desorb large amounts of hydrogen at an almost constant pressure. This allows the power generator to generate power for long periods of time at a power level above that which is sustainable with water-less only operation. Power generators can be designed to generate a wide range of power levels. The power generator with a fuel consisting of chemical hydride and metal hydride can accommodate pulses of power by using some of the hydrogen stored in the metal hydride, and can thus be designed for the average power of the range, resulting in lower cost and reduced self discharge. Additionally, sensitivity to ambient temperature and humidity may be reduced, because the power generator can draw on the hydrogen stored in the storage element for long periods of time, causing significant self heating and humidification in the fuel cell, which may improve performance.    DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for providing electricity from a fuel cell based power generator, involving producing hydrogen as a function of water vapor and a hydride fuel; providing hydrogen from a hydrogen storage element; and producing electricity from hydrogen provided by the hydrogen storage element in response to electricity demands that exceed the ability to produce electricity from hydrogen produced in real time from the hydride fuel.    DESCRIPTION OF DRAWING(S) - The figure shows a schematic cross-sectional view of a power generator having a hydrogen storage element.    Power generator (100)    Fuel cell (110)    Hydrogen producing fuel (120)    Proton exchange membrane (124)    Hydrogen storage element. (127)