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4. Reinstall the screws.
5. Reinstall the computer cover 1 . Then tighten the screws 2 .
6. Reinstall the battery. See “Replacing the battery” on page 61.
7. Turn the computer over again. Connect the ac power adapter and all cables.
Replacing the backup battery
Before you start, print these instructions.
Prerequisites for the procedure
DANGER
If the backup battery is incorrectly replaced, there is danger of an explosion. The backup battery
contains a small amount of harmful substances. To avoid possible injury:
• Replace only with a battery of the type recommended by Lenovo.
• Keep the battery pack away from re.
• Do not expose it to excessive heat.
• Do not expose it to water or rain.
80 User Guide