MSI Wind U100 Q2 Battery 9-cell 7900mAh Netbook Battery Lasts up to 11:10 Hours Longer Than the 3-cell and 6 Cells MSI Wind U100 Battery - Color: Black Type: High performance ultra-density True-Cell(TM) Li-ion 9-cell 7900mAh battery Compatibility: All MSI Wind U100 Models Battery life: Up to 11:10 hours under minimum load (individual result may vary) Warranty: 12 Months Color: Black