11.10V,4400mAh,Li-ion, Replacement Laptop Battery for Dell Studio XPS 16, Studio XPS 1640, Studio XPS 16 (1645), Studio XPS 16 (1647), This laptop battery can replace the following part numbers of Dell: 312-0814, U011C, W298C Voltage: 11.10V ///Capacity: 4400mAh Battery Type: Li-ion///Color: Black Dimension: 204.10 x 49.20 x 21.90 mm///Weight: 392.05 g Product Type: Replacement Battery (Brand New) Condition: New, 1 year warranty!