Dell laptop Battery for inspiron 300M series

Dell laptop Battery for Studio XPS 1640
Dell 85 WHr 9-Cell Lithium-Ion Primary Battery for Dell Studio XPS 16 Laptop
studio 16     Technology   9-Cell lithium ion
  Capacity   85wh
  Warranty
  1 year
Dell 56 WHr 6-Cell Lithium-Ion Primary Battery for Dell Studio XPS 16 Laptop
studio 16     Technology   6-Cell lithium ion
  Capacity   56wh
  Warranty
  1 year