A battery capable of suppressing the swollenness and improving the capacity and the like is provided. The battery includes a spirally wound electrode body (20) in which a cathode and an anode are layered with a separator and an electrolyte in between and spirally wound inside a package member (30) made of an aluminum laminated film. The cathode or the anode contains, as an absorber, a graphite material in which an average face distance d002 of (002) planes of a hexagonal crystal obtained by X-ray diffraction method is from 0.3354 nm to 0.3370 nm, and a peak belonging to a (101) plane of a rhombohedral crystal can be obtained by the X-ray diffraction method. Thereby, gas can be absorbed and thus swollenness can be suppressed. In addition, the battery characteristics such as the capacity can be improved.