CYLINDRICAL GASTIGHT LEAD-ACID BATTERY

摘要

PROBLEM TO BE SOLVED: To provide a cylindrical gastight lead-acid battery capable of providing a sufficient rolling shift prevention effect. SOLUTION: This cylindrical gastight lead-acid battery is provided with a wound group composed by spirally winding a positive electrode plate and a negative electrode plate by interlaying a separator. The separators A and B are present on both surfaces of each electrode plate C; and when it is assumed that elongation of the separator A present inside the electrode plate C in winding is s1, and the elongation of the separator B present outside the electrode plate C in winding is s2, the relationship between the elongations is so set as to satisfy s1