Lenovo V100 Series 6 Cell Li-ion Battery, 5.0-HOUR(1) Average Battery Life Build with high quality components that fits the Lenovo IBM 40Y8321 laptop Volts: 11.1V, Cells: 6, Color: Silver, Chemistry: LiIon, Capacity: 5000mAh, 1 year manufacturer warranty. 100% OEM compatible and made with high quality battery cells. In house engineers to ensure fast response for all technical questions regarding the Lenovo IBM 40Y8321 laptop battery. Ship direct from manufacturer