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A quasi-bipolar lead-acid battery construction includes a plurality of bipolar cells disposed in side-by-side relation to form a stack, and a pair of monoplanar plates at opposite ends of the stack, the cell stack and monopolar plates being contained within a housing of the battery. Each bipolar cel

A quasi-bipolar lead-acid battery construction includes a plurality of bipolar cells disposed in side-by-side relation to form a stack, and a pair of monoplanar plates at opposite ends of the stack, the cell stack and monopolar plates being contained within a housing of the battery. Each bipolar cell is loaded with an electrolyte and composed of a bipolar electrode plate and a pair of separator plates disposed on opposite sides of the electrode plate and peripherally sealed thereto. Each bipolar electrode plate is composed of a partition sheet and two bipolar electrode elements folded into a hairpin configuration and applied over opposite edges of the partition sheet so as to cover the opposite surfaces of the opposite halves thereof. Each bipolar electrode element is comprised of a woven grid with a hot-melt strip applied to a central longitudinal region of the grid along which the grid is folded into the hairpin configuration, and layers of negative and positive active material pastes applied to opposite halves of the grid on opposite sides of the central hot-melt strip. The grid is made up of strands of conductive and non-conductive yarns composing the respective transverse and longitudinal weaves of the grid. The conductive yarn has a multi-stranded glass core surrounded and covered by a lead sheath, whereas the non-conductive yarn has a multi-stranded glass core surrounded and covered by a thermally activated sizing.

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In a bipolar battery construction, the combination comprising: a plurality of bipolar cells disposed in side-by-side relation to form a stack of said cells; said each bipolar cell being loaded with an electrolyte and composed of a bipolar electrode plate and a pair of separator plates disposed on op

In a bipolar battery construction, the combination comprising: a plurality of bipolar cells disposed in side-by-side relation to form a stack of said cells; said each bipolar cell being loaded with an electrolyte and composed of a bipolar electrode plate and a pair of separator plates disposed on opposite sides of said electrode plate; said bipolar electrode plate of each cell being composed of a partition sheet and a pair of bipolar electrode elements folded into a hairpin configuration and applied over opposite edges of said partition sheet so as to cover opposite surfaces of adjacent halves of said partition sheet; said partition sheet and electrode elements of said electrode plate of each cell together defining a peripheral border portion about said electrode plate containing sealable means, said pair of separator plates each cell having respective peripheral border portions containing sealable means bonded directly to said sealable means on said peripheral border portion of said electrode plate to form each of said cells in said stack thereof as an individual self-contained sealed unit separate from one another.