CONTROL VALVE TYPE LEAD-ACID BATTERY

摘要

PROBLEM TO BE SOLVED: To provide a control valve type lead-acid battery capable of extending life time. SOLUTION: An electrode group 2 is housed in a battery jar 1, in a state with a group pressure being applied thereto. The group pressure is set so as to be lower in the lower part of the polar plate group 2 than in the upper part thereof.