The lead acid battery of claim 0, wherein said fibrous mat envelope comprises a conductive layer disposed adjacent to said negative electrode, wherein said conductive layer may comprise conductive carbon, graphite, artificial graphite, activated carbon, carbon paper, acetylene black, carbon black, high surface area carbon black, graphene, high surface area graphene, keitjen black, carbon fibers, carbon filaments, carbon nanotubes, open-cell carbon foam, a carbon mat, carbon felt, carbon Buckminsterfullerene (Bucky Balls), an aqueous carbon suspension, flake graphite, oxidized carbon, and combinations thereof.