VALVE-REGULATED LEAD-ACID BATTERY

摘要

There is provided a valve regulated lead-acid battery excellent in low-temperature high-rate discharge performance. The valve regulated lead-acid battery of the present invention is a valve regulated lead-acid battery including an element made up of positive electrode plates retaining a positive active material, negative electrode plates retaining a negative active material, and separators, wherein an average pore diameter of the negative active material measured by a bubble point method is 0.2 to 0. 35 µm, and an average pore diameter of the separator similarly measured by the bubble point method is 10 to 40 times as large as the average pore diameter of the negative active material.