Compaq N115 User Manual page 24

Here's what is on the underside of your notebook. This is where
the memory compartment, the main battery, battery release
switch and the pop-up feet are located.
J
Before contacting Compaq Customer Support, you will need
Tip
the serial number from the underside of your notebook.
1
Pop-up Feet
2
Memory Compartment
3
Battery Release Switch
See also
more information about the Battery Release Switch.
Users Guide
"Using Battery Power" in Chapter 3 of this guide for
Your Notebook at a Glance
4
Main Battery Compartment
5
Mini PCI Compartment
(Modem)
6
Hard Drive Access Panel
2–11