ThinkPad E550, User Manual

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External devices
CAUTION:
Do not connect or disconnect any external device cables other than 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.
General battery notice
DANGER
Batteries supplied by Lenovo for use with your product have been tested for compatibility and
should only be replaced with approved parts. A battery other than the one specified by Lenovo, or a
disassembled or modified battery is not covered by the warranty.
Battery abuse or mishandling can cause overheat, liquid leakage, or an explosion. To avoid possible
injury, do the following:
• 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 foreign
materials on the battery leads.
Store the rechargeable batteries or products containing the rechargeable batteries at room
temperature, charged to approximately 30 to 50% of capacity. We recommend that the batteries be
charged 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, comply
with local ordinances or regulations.
Notice for removable rechargeable battery
DANGER
Only recharge the battery strictly according to instructions included in the product documentation.
If the battery is incorrectly replaced, there is danger of an explosion. The battery contains a small
amount of harmful substance.
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