Dell XPS 12 (9Q33, Mid 2013) - Manual (Page 22)

2 Disconnect the coin-cell battery cable from the system board.
3 Note the routing of the coin-cell battery cable and remove the cable from the
routing guides.
4 Peel off the coin-cell battery from the keyboard.
5 Lift the coin-cell battery, along with its cable, off the keyboard.
2 1
1 coin-cell battery cable 2 coin-cell battery
22 | Removing the Coin-Cell Battery