This is a 85 WHr 9 Cell Original Lithium-Ion Battery for XPS M1530 Compatible Notebook Models: XPS: M1530 Dell Part Numbers: RU006, GP975, 312-0664, RU033, 0RU033. Product Specifications: Rating: 11.1V Capacity: 85WH Size: Color: Black Cell: 9 Cells Technology: Lithium-Ion Contacts: 9 Position Condition: Brand New In Stock: Yes