NOVELTY - A reagent filled apparatus (20) comprises elemental metal or metal alloy (A) in a holding area (h1) of reaction vessel, inorganic hydride (B) which can release hydrogen when reacting with water and component (A) in holding area (h2), inlet (27), outlet (28,31), rod (26) and spring (30) activated mechanism. The component (A) and component (B) are selected to both be reactants in three reagent chemical reaction to react with water to generate hydrogen gas and a final chemical compound product which includes the component (A), element(s) of the component (B), and oxygen from water.    USE - Reagent filled apparatus is used for producing hydrogen from water e.g. tap water, reclaimed water, industrial grade water and sea water for energy-related applications e.g., power generation using fuel cells and heating.    ADVANTAGE - The reagent filled apparatus enables efficient, simple and economical production of hydrogen using readily available reagents and catalysts. The electricity is produced using hydrogen with high energy conversion efficiency.    DETAILED DESCRIPTION - A reagent filled apparatus comprises elemental metal or metal alloy (A) in a holding area (h1) of reaction vessel, inorganic hydride (B) which can release hydrogen when reacting with water and component (A) in holding area (h2) separate from the holding area (h1), inlet for introducing water into the reaction vessel which initiates contact between the component (A) and the component (B), outlet (o1) including valve (29) for releasing hydrogen gas from reaction vessel, rod suspended on the holding area (h1), and spring activated mechanism configured to raise the holding area (h1) away from the holding area (h2) when the valve is closed which causes a flow of the hydrogen gas to be stopped and pressure in the reaction vessel to increases which ceases the chemical reaction. The component (A) and component (B) are selected to both be reactants in three reagent chemical reaction to react with water to generate hydrogen gas and a final chemical compound product which includes the component (A), element(s) of the component (B), and oxygen from water.    DESCRIPTION OF DRAWING(S) - The drawing shows a schematic view of reagent filled apparatus.    Reagent filled apparatus (20)    Rod (26)    Inlet (27)    Outlet (28,31)    Valve (29)    Spring (30)