| 摘要 |
PROBLEM TO BE SOLVED: To prevent a positive electrode plate from breaking through a separator due to growth and a broken bending main frame touching a negative electrode plate from short-circuiting while using a battery. SOLUTION: The present invention is a lead acid battery characterized in that the positive electrode plate makes use of an expanded metal grating 11 and characterized in that the expanded metal grating 11 is cut at an outside corner 4a and inside corner 4b of the main frames 3a and 3b.
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