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 (1).
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