9-Cell Extended Life Replacement Laptop Battery Fit Dell Studio XPS M1640, Studio XPS M1645, Studio XPS M1647, PP35L, R725C, U011C, U335C, W267C, W269C 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.