This work shows a method to prepare manganese nanoparticles on carbon substrate and some inorganic and organic salts such as carbonate, nitrate, chloride, citrate and acetate from spent dry battery cells. The method involves dismantling the cell followed by sulfuric acid leaching of the whole contents at temperatures up to 75Â°C for 3 hours. The leaching products were filtered and the metals went into solution were determined. Metals other than manganese were chemically separated whereby manganese hydroxide was precipitated at pH 8. Nanoparticles of manganese were prepared by direct reduction of the hydroxide using hydrazine hydrate. The hydroxide salt reacted with the respective acid to prepare the required salt. Results revealed that manganese content in the spent battery cell amounts to 22 % by weight. Leaching extent in sulfuric acid increased with the increasing the acid molarity up to 3, temperature of leaching up to 75 Â°C, leaching time up to 3 hours and stirring conditions. The quality of the products have been characterized by XRD, SEM and FT-IR investigations. The activation energy of the acid leaching of manganese amounts to kJ.mol.