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A lightweight, high-energy electrode plate for a lead acid battery, and method for making an electrode plate, comprising a highly conductive non-lead substrate having a specific gravity no greater than 70% that of lead, a pair of outer layers of thin sheets of imperforate conductive foil that is cor

A lightweight, high-energy electrode plate for a lead acid battery, and method for making an electrode plate, comprising a highly conductive non-lead substrate having a specific gravity no greater than 70% that of lead, a pair of outer layers of thin sheets of imperforate conductive foil that is corrosive resistant to the electrolyte acids of the battery and that are welded together to encapsulate the non-lead substrate.

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[ We claim:] [1.]1. Lightweight, high-energy electrode plates for lead-acid batteries comprising:a) a highly conductive, non-lead, perforated substrate having a specific gravity no greater than 70% that of lead, wherein said non-lead substrate is selected from the group of materials consisting of al

[ We claim:] [1.]1. Lightweight, high-energy electrode plates for lead-acid batteries comprising:a) a highly conductive, non-lead, perforated substrate having a specific gravity no greater than 70% that of lead, wherein said non-lead substrate is selected from the group of materials consisting of aluminum, aluminum alloys, aluminum/magnesium alloys, copper, copper alloys, graphite, carbon fibers, and conductive plastics; andb) a pair of outer layers of conductive material, each layer on an opposite side of said substrate that are corrosive resistant to the electrolytic acids of the battery, said outer layers comprised of imperforate sheets of foil bonded together and substantially encapsulating the non-lead substrate, said outer layers between about 0.0005 inches and 0.030 inches thick and selected from the group consisting of lead, lead/tin alloys, and lead alloys.