Provided is a battery with a higher capacity, a superior charge-discharge cycle characteristic and a superior load characteristic. A cathode and an anode with a separator in between are spirally wound. The cathode comprises a cathode mixed layer containing a composite oxide including Li and at least one kind selected from the group consisting of Co, Ni, Mn and Fe. The anode comprises an anode mixed layer including tin-containing alloy powders and a carbon material. The tin-containing alloy powders are made of tin and an element except for alkali metal before first charge. A porosity of the anode mixed layer before the first charge is within a range from 25 vol % to 65 vol % inclusive. Thereby, even if a tin-containing alloy expands, enough pores as lithium-ion paths can be secured. Therefore, a superior charge-discharge cycle characteristic and a superior high load characteristic can be obtained.