VALVE REGULATED LEAD-ACID BATTERY
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United States of America Patent
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Issued Date -
Jul 31, 2014
app pub date -
Sep 7, 2012
filing date -
Oct 14, 2011
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Abstract
A valve-regulated lead acid battery comprises an element including a positive electrode plate which retains a positive active material, a negative electrode plate which retains a negative active material, and a separator. An average pore diameter of the negative active material measured by a bubble point method is 0.2 μm or more and 0.35 μm or less. An average pore diameter of the separator measured by the bubble point method is 10 to 40 times as large as the average pore diameter of the negative active material.
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