73 Watt-Hour 6600mAh Replacement Battery Fit Dell Studio XPS 16 (1645), Studio XPS 16 (1647), Studio XPS 1640 Laptops, W298C, W303C, X411C, X413C, X415C Battery Type: Lithium-ion (Li-ion)  Color: Black Voltage: 11.10V  Capacity: 6600mAh Rate: 73.00 Wh  Weight: 541.20 g Battery Replace Code: 312-0814, 312-0815, 451-10692, PP35L, R725C, U011C, U335C, W267C, W269C, W298C, W303C, X411C, X413C, X415C Condition: New, 1 year warranty! Please ensure the product(s) that you are going to buy fits the brand, model, part number and dimension of your device.