SEALED LEAD ACID STORAGE BATTERY AND METHOD OF FABRICATING IT

摘要

PROBLEM TO BE SOLVED: To provide a sealed lead acid storage battery with a prolonged life at a low cost. SOLUTION: A paste-type positive or negative electrode plate 5 or 7 consists of a lead alloy collector 1, active material layer, and synthetic resin part 2 with a concave portion 4. The position electrode plate 5 is joined with the negative electrode plate 7 through a retainer 6 so as to form an electrode plate group, which is inserted in an electrolytic bath to provide a sealed lead acid storage battery. The active material layer of the positive electrode plate 5 is designed to have a density of 3.4-4.4 g/ml, and the electrode plate group is subjected to a pressure of 20 kPa or more in the electrolytic bath.