LEAD BATTERY

PROBLEM TO BE SOLVED: To provide a lead battery which inhibits cracks of a lid member without adding new components.SOLUTION: A lead battery includes: a group of electrodes 30; a battery case 20 which stores the group of the electrodes; a lid member 50 having a base part 51 sealing the battery case 20 and an installation part 55 extending from the base part 51 to the battery case; a cylindrical bushing 70 provided at the installation part 55; and a pole pillar 90 which is connected with the group of the electrodes 30 and inserted into a cylinder of the bushing 70. The installation part 55 includes a cover part 57 which covers an outer corner part 83 formed by a lower end surface 78 facing the battery case and an outer peripheral surface 76 of the bushing 70. The outer corner part 83 of the bushing 70 has a chamfered shape unlike an inner corner part 81 formed by the lower end surface 78 and an inner peripheral surface 71 of the bushing 70. 【課題】新たな部品を追加せずに、蓋部材のひび割れを抑制する。【解決手段】極板群３０と、前記極板群３０を収容する電槽２０と、前記電槽２０を封口する基部５１及び前記基部５１から前記電槽内に向かって延在する装着部５５を有する蓋部材５０と、前記装着部５５に設けられた筒型のブッシング７０と、前記極板群３０に接続され、前記ブッシング７０の筒内に挿入された極柱９０と、を含み、前記装着部５５は、前記ブッシング７０の前記電槽内を向いた下方端面７８と外周面７６とで形成される外側コーナ部８３を覆う被覆部５７を有し、前記ブッシング７０の外側コーナ部８３は、前記ブッシング７０の前記下方端面７８と内周面７１とで形成された内側コーナ部８１と異なり、面取り形状である。【選択図】図７