Lenovo ThinkPad E450 User Manual page 124

• Do not drop, crush, or puncture the battery, or make it subject to strong forces. Battery abuse
or mishandling can cause the battery to overheat, which can cause gasses or flame to "vent"
from the battery or coin-cell battery.
To replace the coin-cell battery, do the following:
1. Turn off the computer; then disconnect the ac power adapter and all cables from the computer. Wait
several minutes to let the computer cool.
2. Close the computer display and turn the computer over.
3. Loosen the screws
4. Disconnect the main battery connector.
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User Guide
1 and then remove the cover 2 .