L17L3PB0, L17M3PB0, L18D3PG1, L17C3PG0. Capacity: 42Wh. For Lenovo 100E 300E 2nd Gen Notebook Series. For Lenovo Ideapad Flex 3 CB-11IGL05 Series. If you do not have a battery, pls check the complete part number on the back of the computer to search.
