Dell Inspiron 17 (5749, Early 2015) - Manual (Page 59)

Removing the Coin-Cell
Battery
WARNING: Before working inside your computer, read the safety
information that shipped with your computer and follow the steps in
Before Working Inside Your Computer . After working inside your
computer, follow the instructions in After Working Inside Your
Computer . For more safety best practices, see the Regulatory
Compliance home page at dell.com/regulatory_compliance.
CAUTION: Removing the coin-cell battery resets the BIOS settings to
default. It is recommended that you note the BIOS settings before
removing the coin-cell battery.
Prerequisites
1 Remove the battery .
2 Remove the base cover .
3 Follow the procedures from step 1 to step 3 in removing the hard drive .
4 Follow the procedures from step 1 to step 2 in removing the optical drive .
5 Remove the keyboard .
6 Remove the palm rest .
Procedure
Using a plastic scribe, gently pry the coin-cell battery out of the battery
socket on the system board.
59