Made with HADI High pressure machine – for void-free, uniform grain structure Corrosion-resistant proprietary spine alloy composition – longer battery life Tubular plate construction – extremely long life & superior performance Puncture-resistant DARAMIC-USA separator – prevents internal short circuits Excellent deep discharge recovery Lowest internal resistance & excellent charge acceptance for long Backup Contains 30% more active material than ordinary batteries Extra-strong, flexible oxidation-resistant gauntlet for better performance & long life