Patent ID: 7625666

Claim:
A lead plate-attached coin-type battery comprising: an outer can that is made of a conductive material and is shallow pan-shaped; a cap that is made of a conductive material and seals an aperture of the outer can via an insulation member; an electrode assembly including a positive element and a negative element disposed in opposition via a separator, the electrode assembly being stored in an internal space enclosed by the outer can and the cap, one of the positive element and the negative element being electrically connected to the outer can, and an other one of the positive element and the negative element being electrically connected to the cap; a lead plate attached to one of the outer can and the cap, wherein an outer face of one of the outer can and the cap to which the lead plate is not attached has formed thereon one or more projections that project away from the internal space; and an inner face of the one of the outer can and the cap to which the lead plate is not attached has formed thereon a recession that recedes away from the internal space.