Dell Inspiron 17 (5749, Early 2015) - Manual (Page 13)

Replacing the 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.
Procedure
1 Align the tabs on the battery with the slots on the battery bay.
2 Snap the battery into place.
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