Patent ID: 7138205

Claim:
A battery, comprising a plurality of cells connected in series wherein each cell comprises a unit generating element containing a plurality of positive electrode plates, negative electrode plates, and separators, wherein: the positive electrode plates and the negative electrode plates in each cell are alternately laminated via the separators; the positive electrode plates and the negative electrode plates each comprises an electrode plate body and a collector provided on the electrode plate body, the collector of the positive electrode plates in each cell except a last cell is attached to a positive electrode plate strap, each positive electrode plate strap being provided on one side of each cell, and the collector of the negative electrode plates in each cell except a first cell is attached to a negative electrode plate strap, each negative electrode plate strap being provided on the other side of each cell; a length A of the collector of each electrode plate, a length W of the positive and negative electrode plate straps along the collector, and a length X of the electrode plate body satisfy: A>W/2, and X/5≦W<X/2.