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Get Longer Battery Life and improved laptop performance with this Dell Inspiron 17-7779 Original Laptop Battery.  This Battery made by Dell and is built with highest quality components and best quality cells which provide longer life with fast charging.IMPORTANT Tips to Take Care for your Dell Inspiron 17-7779 P30E 2-in-1 Laptop Battery:New Dell Inspiron 17 7779 Battery comes in discharged/ partially charged state and it should go through 2-3 charge/ discharge..