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The paper explores change of important parameters of lead acid battery cell during discharge and charge by potential electrochemical impedance spectroscopy (PEIS) method. Nyquist diagrams measured in situ were used for determination of ohmic resistance, charge transfer resistance and Warburg resistance of lead acid battery cell.

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This paper describes active mass and collector resistivity and impedance changes of lead-acid accumulator electrodes. Data was obtained during experiment with pulse charging cycling of old lead-acid accumulator. Resistivity changes of active mass and collector were measured using four-point direct current method. Impedance changes were observed by electrochemical impedance spectroscopy. Old lead-acid accumulator previously not used for almost half of a year was used in the experiment. Reasons why pulse charging was used follows: increased efficiency of charging, gas generation reduction, corrosion speed reduction, sulfation reversion of old cells.