Patent ID: 8435667

Claim:
An assembled battery comprising: a plurality of rechargeable unit cells, which are connected together in series, each of the plurality of rechargeable unit cells including: an electrode body that has a positive electrode and a negative electrode; a container that houses the electrode body and an electrolyte; and a positive electrode terminal and a negative electrode terminal which are arranged on an outside of the container, wherein the plurality of unit cells is arranged in a predetermined direction and fastened together while a predetermined load is applied in the arranging direction, wherein a gap between the electrode body and an inside wall surface of the container of a first one of the unit cells is eliminated by inserting a first number of insulating fillers so that a thickness in the arranging direction of each of the unit cells in the fastened state is constant, and wherein a gap between the electrode body and an inside wall surface of the container of a second one of the unit cells is eliminated by inserting a second number of insulating fillers different from the first number so that the thickness in the arranging direction of each of the unit cells in the fastened state is constant.