Lead Acid Battery: A Reliable Source of Power

A rechargeable battery uses lead and lead oxide for the electrodes and sulfuric acid for the electrolyte. During discharge, the lead (Pb) electrode is converted to lead sulfate (PbSO4) and the lead oxide (PbO2) electrode is converted to lead sulfate. Electrons flow from the Pb electrode to the PbO2 electrode through the external circuit, providing electrical energy. During charge, the opposite chemical reaction takes place restoring the battery to its original state.