4400mAh Toshiba PA3928U-1BRS Battery for Qosmio X775-Q7270, Qosmio X775-3DV80, Qosmio X775-Q7275, Qosmio X775-Q7387 Battery Type: Lithium-ion (Li-ion) Voltage: 14.40V  Capacity: 4400mAh No. of cell: 8  Rate: 63.00 Wh Color: Black  Weight: 515.35 g Condition: New, 1 year warranty! Please ensure the product(s) that you are going to buy fits the brand, model, part number and dimension (mentioned above) of your device.