Lenovo ThinkPad Edge E531 - Manual (Page 114)

5. Detach the connector 1 . Then remove the backup battery 2 .
To install the backup battery, do the following:
1. Install the backup battery 1 . Then attach the connector 2 .
2. Reinstall the computer cover 1 . Then tighten the screw 2 .
3. Reinstall the battery. See “Replacing the battery” on page 67.
98 User Guide