Warranty 1 Year Voltage 14.4V Battery Type External Cells 4 Cell Cell Type Li-ion 18650 cell Battery Capacity 2200mAh Watt-Hour 29Wh Compatible with LENOVO IdeaPad Flex 14 Series LENOVO IdeaPad Flex 14D Series LENOVO IdeaPad Flex 14M Series LENOVO IdeaPad Flex 15 Series LENOVO IdeaPad Flex 15D Series LENOVO IdeaPad Flex 15M Series LENOVO IdeaPad S500 Series LENOVO IdeaPad S500 Touch Series LENOVO IdeaPad Flex 15APSeries LENOVO IdeaPad Flex 14AT Series LENOVO IdeaPad Flex 14APSeries LENOVO IdeaPad Flex 15AT Series