Lenovo N21 Chromebook Hardware Maintenance Manual page 36

Figure 7. Detach the touchpad cable and the keyboard cable
Step 8. Remove the three screws
Figure 8. Remove the battery
Table 5. Screw specifications — removing the upper case and the battery
Screw Specifications
label
5
M2 × 4.5mm, flat-head, nylon-coated
13
M2 × 3mm, flat-head, nylon-coated
Refer to Table 3 "Part numbers for FRUs (CRUs)" on page 25 to look up the Lenovo part numbers of the
following replacement parts:
Upper case
Foot rubber pack
battery pack
30
Hardware Maintenance Manual
13 and then remove the battery pack in the direction shown by arrow
Color Torque
Black 1.85 +/- 0.15kgf-cm
Black
1.85 +/- 0.15kgf-cm
14 .