| 摘要 |
PROBLEM TO BE SOLVED: To provide a lead-acid storage battery in which strength of the welding face is enhanced, and which is sufficiently durable against depression and swelling of a battery case, and has a stable performance, in the lead-acid storage battery in which the outer peripheral part of the battery case and the outer peripheral part of the cap are joined by a heat welding. SOLUTION: In the lead-acid storage battery in which the outer peripheral part of the the battery case and the outer peripheral part of the cap are joined by the heat welding, the welding face is made slanted. COPYRIGHT: (C)2004,JPO&NCIPI
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