The Lenovo V330 15 inch Ultrabay 39Wh 2Cells battery will greatly extend your device run time. Coming with the flexible Ultrabay design and dedicated Bezel design, this battery is perfectly compatible with your Lenovo V330 15 inch Machine. * The battery life is affected by many factors, including: power management, screen brightness, features, battery conditioning, applications, and other customer preferences. '-Ultrabay design with dedicated bezel, flexible so a battery or DVD burner can be installed in the same location; - Lithium-Ion （Li-Ion) technology - 2 cells, 39Wh rechargeable system battery - Over-discharge protection