Patent ID: 8728652

Claim:
A cylindrical alkaline battery comprising: a cylindrical battery case with a bottom; a cylindrical positive electrode contained in the battery case, the positive electrode having a hollow and including manganese dioxide and graphite; a negative electrode packed in the hollow of the positive electrode, the negative electrode including zinc or a zinc alloy; a separator interposed between the positive electrode and the negative electrode; a negative electrode current collector rod inserted into the negative electrode; and an alkaline electrolyte, wherein: the packing density Dc of the manganese dioxide in the positive electrode is 2.8 to 3 g/cm 3 , the packing density Da of the zinc or zinc alloy in the negative electrode is 2 to 2.3 g/cm 3 , and the packing density Dc of the manganese dioxide, the packing density Da of the zinc or zinc alloy, the thickness Tc of the positive electrode in a radial direction, and the thickness Ta of the negative electrode in a radial direction satisfy the following relational formula: −11.652×( Tc/Ta ) 2 +14.470×( Tc/Ta )−3.095 <Dc/Da< 8.895×( Tc/Ta ) 2 −16.244×( Tc/Ta )+8.726, where 0.656 ≦Tc/Ta≦ 0.873.