| 摘要 |
Provided is a lead acid storage battery wherein the life time performance is significantly improved, reduction of liquid is suppressed, corrosion of the negative electrode ear is suppressed, and the amount of free carbon in the electrolytic solution is small. In the lead acid storage battery, positive and negative electrode grids are comprised of a Pb-Ca-Sn alloy which does not substantially contain Sb, positive and negative electrode straps are comprised of a lead alloy containing 5,000 mass ppm or less of Sb (including cases of substantially 0 mass ppm), and the negative electrode active material is doped with carbon that uses expanded graphite and/or whisker-like carbon in a part thereof. The total additive amount of the expanded graphite and/or the whisker-like carbon is preferably 0.5-3.0 mass% with respect to the mass of the negative electrode active material. |
