Lenovo ThinkPad X1 User Manual page 12

External devices
CAUTION:
Do not connect or disconnect any external device cables other than Universal Serial Bus (USB) and
1394 cables while the computer power is on; otherwise, you might damage your computer. To avoid
possible damage to attached devices, wait at least five seconds after the computer is shut down to
disconnect external devices.
Notice for lithium coin cell battery
DANGER
Danger of explosion if battery is incorrectly replaced.
When replacing the lithium coin cell battery, use only the same or an equivalent type that is
recommended by the manufacturer. The battery contains lithium and can explode if not properly
used, handled, or disposed of.
Do not:
• Throw or immerse into water
• Heat to more than 100°C (212°F)
• Repair or disassemble
Dispose 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 CR (manganese dioxide) lithium coin cell batteries may contain perchlorate.
Perchlorate Material - special handling may apply, See
www.dtsc.ca.gov/hazardouswaste/perchlorate
Notice for built-in rechargeable batteries
DANGER
Do not attempt to replace the internal rechargeable lithium ion batteries. Contact Lenovo Support
for factory replacement.
Notice for optional external slice rechargeable battery pack
DANGER
Do not attempt to disassemble or modify the optional external slice rechargeable battery pack.
Attempting to do so can cause an explosion, or liquid leakage from the battery pack. A battery
pack other than the one specified by Lenovo, or a disassembled or modified battery pack is not
covered by the warranty.
If the optional external slice rechargeable battery pack is incorrectly replaced, there is danger of an
explosion. The battery pack contains a small amount of harmful substances. To avoid possible
injury:
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User Guide