Electric batteries

A multi-cell lead acid electric storage battery in which each cell electrode structure comprises an assembly of a single first electrode incorporating a lead support of one polarity separated by a separator from a single second electrode incorporating a lead support of the other polarity an integral portion of said first electrode support extending out to one side of its cell and an integral portion of said second electrode support extending out to the other side of its cell, said first integral portion being connected to or integral with an electrode support structure in the adjacent cell, or a battery terminal, on its side of each cell, and the other integral portion being connected to an integral with an electrode support structure in the adjacent cell on its side of each cell, said integral portions extending substantially the full width or substantially the full height of the side of each cell, the cells being arranged to provide an array of multiple layers of electrodes of alternating polarity.