Lithium coin-cell battery noticeDANGERDanger of explosion if battery is incorrectly replaced.If the coin-cell battery is not a CRU, do not attempt to replace the coin-cell battery. Replacement ofthe battery must be done by a Lenovo-authorized repair facility or technician.The Lenovo-authorized repair facilities or technicians recycle Lenovo batteries according to locallaws and regulations.When replacing the lithium coin-cell battery, use only the same type or equivalent type that is recommendedby the manufacturer. The battery contains lithium and can explode if not properly used, handled, or disposedof. Swallowing the lithium coin-cell battery will cause chocking or severe internal burns in just two hours andmight even result in death.Keep batteries away from children. If the lithium coin-cell battery is swallowed or placed inside any part ofthe body, seek medical care immediately.Do not:• Throw or immerse into water• Heat to more than 100 °C (212°F)• Repair or disassemble• Leave in an extremely low air pressure environment• Leave in an extremely high-temperature environment• Crush, puncture, cut, or incinerateDispose of the battery as required by local ordinances or regulations.The following statement applies to users in the state of California, U.S.A.California Perchlorate Information:Products containing manganese dioxide lithium coin-cell batteries may contain perchlorate.Perchlorate Material - special handling may apply, see https://www.dtsc.ca.gov/hazardouswaste/perchlorate/.Heat and product ventilationComputers, power adapters, and many accessories can generate heat when turned on and when batteriesare charging. Always follow these basic precautions:• Do not leave your computer, power adapter, or accessories in contact with your lap or any part of yourbody for an extended period when the products are functioning or when the battery is charging. Your54 User Guide