LEAD-ACID BATTERY, MICRO-HYBRID VEHICLE, AND VEHICLE HAVING IDLING STOP SYSTEM

摘要

The purpose of the present invention is to provide a lead-acid battery that can achieve excellent charge acceptance. The present invention pertains to a lead-acid battery provided with a positive electrode, a negative electrode, and an electrolyte, wherein: the positive electrode has a current collector and a positive-electrode material held by the current collector; the negative electrode has a current collector and a negative-electrode material held by the current collector; the positive-electrode material has a specific surface area of 11 m2/g or more; the negative-electrode material contains a negative-electrode active material and Ketjenblack; and the electrolyte contains aluminum ions.