Lenovo B4400 Notebook - Manual (Page 33)

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Appendix. CRU (Customer Replaceable Units)
instructions
Replacing the battery - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
To replace the battery, do the following:
1 Turn off the computer. Disconnect the AC power adapter and all cables
from the computer.
2 Close the computer display, and turn the computer over.
3 Unlock the manual battery latch
. Hold the spring-loaded battery latch
in the unlocked position , remove the battery pack in the direction
shown by the arrow .
Notes:
•
Make sure the battery has been removed before replacing any devices.
• Write down the WLAN serial number on the attached label before removing the backup
battery and Mini PCI Express Card. The serial number is required by Lenovo to replace
with the proper unit.
Note: Use only the battery provided by Lenovo. Any other battery could ignite or explode.
a
b
c
1
a
b
c