A battery includes a unit cell including spirally rolled electrodes, a jacket having a recessed section, a cathode lead terminal, and an anode lead terminal. The unit cell is placed in the recessed section, the recessed section is covered with a portion of the jacket, and the cathode and anode lead terminals are each connected to corresponding outer ends of the rolled electrodes, are placed on the side of the rolled electrodes that is exposed from an opening of the recessed section, and extend straight out of the jacket.