HP Spectre Ultrabook 14-3210nr - Manual (Page 26)

2. Slide the battery cover (3) away from the computer, and then remove the battery cover.
To replace the battery cover:
1. Slide the battery cover (1) toward the rear of the computer until it is seated.
2. Slide the battery cover lock (2) to lock the battery cover into place.
NOTE: The battery cover release latch automatically locks into place.
16 Chapter 2 Getting to know your computer