Dell Inspiron 14z (N411z, Late 2011) - Manual (Page 14)

14 Battery
Replacing the Battery
1 Follow the instructions in "Before You Begin" on page 9.
2 Place the battery in the battery bay and press down until the battery clicks
into place.
3 Ensure that both the battery-release latches are in the locked position.
1 battery 2 battery-release latches (2)
2
1