HP Notebook - Manual (Page 68)

Power
Startup and Reference Guide––Part 2 4-19
To insert a battery pack, insert the alignment tab on the battery
pack into the alignment slot on the notebook 1, then tilt the
battery pack downward until it snaps into place 2.
Inserting a battery pack
2. To restore from Hibernation or to turn on the notebook, press
the power button.
Recycling or Disposing of a Used
Battery Pack
For information about recycling or disposing of
a used battery pack, refer on the Documentation Library CD to
the Regulatory and Safety Notices guide, “Battery Notice”
section.