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The possibility of utilization of the lead-air electrochemical system as a power source is shown. The system consists of a standard lead electrode and H2SO4 electrolyte, used in the lead acid battery and a gas diffusion electrode developed in the Institute of Electrochemistry and Energy Systems. Three catalysts have been checked for applicability with the new system-active carbon Norit NK, cobalt tetramethoxyphenylporphyrin and cobalt phthalocyanine. Cyclic voltammetry has been applied to all three catalysts and the results have been presented as galvanostatic charge-discharge curves. Polarization and Tafel dependences have been studied in a three-electrode cell. An original method for formation of the lead electrode has been elaborated. It has been established that the gas diffusion electrode is sufficiently stable in the sulphuric acid electrolyte. The energy values obtained at laboratory conditions provide a good perspective for a practical application of the lead-air system for energy storage and in the automobile industry.