A sealed secondary battery comprising: a laminated electrode body having a structure in which a positive electrode including a rectangular sheet-shaped positive electrode current collector and a positive electrode active material layer formed on the positive electrode current collector and a negative electrode including a rectangular sheet-shaped negative electrode current collector and a negative electrode active material layer formed on the negative electrode current collector are alternately laminated with a separator therebetween; an electrolyte; and a rectangular case; wherein the rectangular case includes a case body in which the laminated electrode body and the electrolyte are housed and a lid for closing an opening of the body, at one end of each of the positive electrode and the negative electrode in a long side direction, a current collector exposed portion (52A, 56A) having no active material layer is formed in a short side direction, the laminated electrode body has a configuration in which the current collector exposed portions of the positive electrodes are laminated at one end in the long side direction and the current collector exposed portions of the negative electrodes are laminated at the other end in the long side direction, a positive electrode current collecting portion and a negative electrode current collecting portion are attached to a case inner surface side of the lid, a part of the positive electrode current collecting portion and a part of the laminated current collector exposed portions of the positive electrodes are bonded together, and a part of the negative electrode current collecting portion and a part of the laminated current collector exposed portions of the negative electrodes are bonded together, and wherein a bonding portion (Wp) between the positive electrode current collecting portion and the positive electrode current collector exposed portion and a bonding portion (Wn) between the negative electrode current collecting portion and the negative electrode current collector exposed portion are formed at positions at which, when a full length in the short side direction of each of the current collector exposed portions (52A, 56A) of the positive electrode and the negative electrode using an end close to the lid as a starting point is set as L, a distance from the end close to the lid in the short side direction is equal to or less than L/2. a laminated electrode body having a structure in which a positive electrode including a rectangular sheet-shaped positive electrode current collector and a positive electrode active material layer formed on the positive electrode current collector and a negative electrode including a rectangular sheet-shaped negative electrode current collector and a negative electrode active material layer formed on the negative electrode current collector are alternately laminated with a separator therebetween; an electrolyte; and a rectangular case; wherein the rectangular case includes a case body in which the laminated electrode body and the electrolyte are housed and a lid for closing an opening of the body, at one end of each of the positive electrode and the negative electrode in a long side direction, a current collector exposed portion (52A, 56A) having no active material layer is formed in a short side direction, the laminated electrode body has a configuration in which the current collector exposed portions of the positive electrodes are laminated at one end in the long side direction and the current collector exposed portions of the negative electrodes are laminated at the other end in the long side direction, a positive electrode current collecting portion and a negative electrode current collecting portion are attached to a case inner surface side of the lid, a part of the positive electrode current collecting portion and a part of the laminated current collector exposed portions of the positive electrodes are bonded together, and a part of the negative electrode current collecting portion and a part of the laminated current collector exposed portions of the negative electrodes are bonded together, and wherein a bonding portion (Wp) between the positive electrode current collecting portion and the positive electrode current collector exposed portion and a bonding portion (Wn) between the negative electrode current collecting portion and the negative electrode current collector exposed portion are formed at positions at which, when a full length in the short side direction of each of the current collector exposed portions (52A, 56A) of the positive electrode and the negative electrode using an end close to the lid as a starting point is set as L, a distance from the end close to the lid in the short side direction is equal to or less than L/2.