Patent ID: 8518578

Claim:
An electrochemical battery cell comprising an array of positive cast lead electrodes and an array of negative cast lead electrodes; and each of said arrays of cast lead electrodes including; a first pair of cast lead electrodes, each of said cast lead electrodes in said first pair having; a rectangular planar portion with overall height and width dimensions; a solid outside edge bordering said planar portion along a full length of one of said overall height and width dimensions; a singular bus bar extending from and along a full length of said solid outside edge; said singular bus bar being integrally formed by casting, onto said solid outside edge; said singular bus bar having two opposite and identical lead side surfaces extending along a full length thereof parallel with said planar portion; said lead side surfaces being raised relative to said planar portion; said cast lead electrodes in said first pair being mounted side by side with one of said lead side surfaces on said singular bus bar on one of said cast lead electrodes being laid against and in full matching-outline contact with an entire said lead side surface on said singular bus bar on the other cast lead electrode in said first pair of cast lead electrodes, such that both said singular bus bars on said first pair of cast lead electrodes jointly form a conductive lead wall along said solid outside edges for transporting electrons between each of said planar portions and a respective one of said singular bus bars and between said singular bus bars.