Dell XPS 12 (9Q23, Late 2012) - Manual (Page 25)

Removing the Coin-Cell Battery
WARNING: Before working inside your computer, read the safety information
that shipped with your computer and follow the steps in "Before You Begin" on
page 7. After working inside your computer, follow the instructions in
"After Working Inside Your Computer" on page 9. For additional safety best
practices information, see the Regulatory Compliance Homepage at
dell.com/regulatory_compliance.
CAUTION: Removing the coin-cell battery resets the BIOS settings to default.
It is recommended that you note the BIOS settings before removing
the coin-cell battery.
Prerequisites
1 Remove the base cover. See "Removing the Base Cover" on page 10.
2 Remove the battery. See "Removing the Battery" on page 13.
Procedure
1 Disconnect the I/O-board cable from the system board.
1
1 I/O-board cable
2
3
Disconnect the coin-cell-battery cable from the system board.
Note the coin-cell-battery cable routing and remove the cable from the routing
guides.
Removing the Coin-Cell Battery | 25