Lenovo IdeaPad S540-15 Hardware Maintenance Manual page 41

Figure 6. Disconnect the cable
Step 2. Remove the 3 screws.
Figure 7. Remove the 3 screws
Screw specifications
M2.0 x 3.0
Step 3. Remove the battery pack.
Number of screws
3
.
Chapter 4 Removing a FRU or CRU
35