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These batteries are designed to feed power-hungry devices without having to swap batteries every other minute. The Mn and Mn inert replaced by an additional 2.5% Cobalt (Co) & Nickel (Ni) proprietary levels. It also exceeds all previous designs and chemistry results with greater amperage and capacity and has a Cathode Tag made from UH Purity Aluminum: Ultra-High Purity (UHP). There is an Updated Poly Seal & it enhances security of seal & proper operation with a NEW Mn bonding process that achieves even greater purity: Cycle Life is increased to 75% nominal average of original capacity. On top of that, there's a NEW NiCo Meld over 10kHz: process that increases charging rate to 4.25A from the previous 4A!