| 摘要 |
PROBLEM TO BE SOLVED: To prevent a capacity from being deteriorated in accompaniment with charge and discharge of a lead-acid battery, and to reduce internal resistance to increase the capacity of the battery. SOLUTION: A polymer compound containing any one selected from the group comprising polyvinyl alcohol, polyethylene glycol, polyvinyl pyrrolidone, polyacrylic acid and esters thereof, which have 30-3000 of polymerization degree respectively, or the polymer compound and colloidal barium sulfate is/are contained in an electrolyte and/or an electrode active material molding. (A) represents a discharge capacity in a charge-discharge cycle test for this battery, and (B) is a discharge capacity in the same test for a conventional battery.
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