Unique patented alloy composition of lt500 battery protects the lead parts from corrosion, even when the battery is charged with the high voltagemanufactured using hadi high pressure casting machine, which helps to maintain void free, uniform grain structureextremely high purity, corrosion-resistant proprietary spine alloy ensures longer lifeproprietary spine design ensures uniform distribution of positive active material for extremely long life and superior performanceextra-strong, flexible oxidation-resistant gauntlet for higher performance and extremely long.