Patent ID: 7691532

Claim:
A sealed prismatic battery, comprising: a battery case including two end walls and partition walls spaced apart therebetween to define cell cases; electrode plate groups receivable in the cell cases together with liquid electrolyte, said electrode plate groups each including positive electrode plates and negative electrode plates alternately stacked upon one another with separators interposed therebetween, one side edge of each of the positive electrode plates and an other side edge of each of the negative electrode plates being protruded in opposite directions to form respective lead portions; collectors each bonded to a respective one of the lead portions on both sides of the electrode plate groups; and a conductive plate being disposed at each of said two end walls of the battery case and interposed between each of said end walls and a respective one of said collectors facing each of the end walls, said conductive plate being connected to a respective one of the collectors at one or more than one location in a middle part of the collectors, the conductive plate having a smaller resistance than the collector and having a larger cross section than a corresponding cross section of said collector.