LEAD-ACID BATTERY

摘要

A tap (13) having an air vent (12) for discharging gas from a battery outside is mounted on an opening (11) for liquid arranged in the battery armor. Inside a cylindrical main body (20) of the tap (13), there is mounted a control valve unit (21) arranged as a separate body from the cylindrical main body (20) for forming an air vent path from an air exhaust hole (22) arranged at one end to an air vent opening (28) arranged at the other end in accordance with the battery internal pressure.