Patent ID: 7732098

Claim:
A lead-acid battery having a plurality of positive and negative battery grids with separators therebetween: (a) at least some of said positive grids being a lead-free titanium alloy having 0.009% to 0.9% selected from the group of palladium, ruthenium and palladium with ruthenium; (b) said titanium alloy grids having an expanded metal body portion and said grids having a thickness of less than 1 mm and not being a foil; (c) said negative grids having an expanded metal body portion having a thickness of less than 0.8 mm and not being a foil (d) said titanium and negative grids each forming a plane having an imaginary line perpendicular thereto, said battery having at least 10 of said grids perpendicularly aligned along 1 inch (25.4 mm) of said imaginary line.