MANUFACTURING METHOD OF SEALED TYPE LEAD-ACID BATTERY

摘要

PROBLEM TO BE SOLVED: To provide a manufacturing method of lead-acid battery having superior productivity and battery performance, in the case where a solution in which granular silica and dilute sulfuric acid are dispersed is injected into the battery, and where only excess electrolyte is discharged from a drain hole. SOLUTION: In this manufacturing method of granular type sealed lead-acid battery where a solution in which granular silica is dispersed in dilute sulfuric acid s injected from the inlet of the battery and the excess dilute sulfuric acid in the battery from drain hole, where the filling of granular silica and injection of sulfuric acid are carried out simultaneously, the concentration of granular silica and dilute sulfuric acid in the dispersed solution is granular silica/sulfuric acid=0.15-0.25 g/cc.