General battery noticeDANGERBatteries supplied by Lenovo for use with your product have been tested for compatibility andshould only be replaced with approved parts. A battery other than the one specified by Lenovo, or adisassembled or modified battery is not covered by the warranty.Battery abuse or mishandling can cause overheat, liquid leakage, or an explosion. To avoid possibleinjury:• Do not open, dissemble, or service any battery.• Do not crush or puncture the battery.• Do not short-circuit the battery, or expose it to water or other liquids.• Keep the battery away from children.• Keep the battery away from fire.Stop using the battery if it is damaged, or if you notice any discharge or the buildup of foreignmaterials on the battery leads.Store the rechargeable batteries or products containing the rechargeable batteries at roomtemperature, charged to approximately 30 to 50% of capacity. We recommend that the batteries becharged about once per year to prevent overdischarge.Do not put the battery in trash that is disposed of in landfills. When disposing of the battery, complywith local ordinances or regulations.Notice for built-in rechargeable batteryDANGERDo not attempt to remove or replace the built-in rechargeable battery. Replacement of the batterymust be done by a Lenovo-authorized repair facility or technician.Only recharge the battery strictly according to instructions included in the product documentation.The Lenovo-authorized repair facilities or technicians recycle Lenovo batteries according to locallaws and regulations.Appendix A. Important safety information 25