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• Do not drop, crush, puncture, or subject to strong forces. Battery abuse or mishandling can
cause the battery to overheat, which can cause gasses or ame to “vent” from the battery
pack or coin cell.
To replace the backup battery, do the following:
1. Turn off the computer, then disconnect the ac power adapter and all cables from the computer. Wait
three to ve minutes to let the computer cool.
2. Close the computer display, and turn the computer over.
3. Remove the battery. See “Replacing the battery” on page 69.
4. Remove the keyboard. See “Replacing the keyboard” on page 74.
5. Detach the connector, and then remove the backup battery.
6. Install the new backup battery and attach the connector.
7. Reinstall the keyboard. See “Replacing the keyboard” on page 74.
8. Reinstall the battery, and turn the computer over again. Connect the ac power adapter and all cables.
Chapter 6. Replacing devices 93