L18M4PF4 L18C4PF4 L18M4PF3 L18C4PF3 Laptop Battery Compatible for Lenovo IdeaPad C340-14API C340-14IWL C340-14IML S540-14API S540-14IML S540-14IWL Flex-14API Flex-14IML Flex-14IWL Series 5B10T09080