Compaq Armada 1500c - Notebook PC Reference Manual page 24

Exit Suspend by pressing the suspend button once. When you exit
Suspend, the following occurs:
Computer beeps twice.
Power/suspend light stops blinking and becomes steady.
Returns your information to the screen you were using before
Suspend was initiated. No information is lost.
The computer will not exit Suspend if a low battery
condition exists and it is not connected to external power. Connect
power and press the Suspend button once to return your
information to the screen.
If the computer is in Suspend and a low battery
condition occurs, the computer automatically initiates Hibernation
(unless Hibernation has been disabled), saves your information to
the hard disk, and turns off the computer. When you turn the
computer back on after inserting a fully charged battery pack or
connecting external power, your information returns to the screen
at the point when Suspend was initiated. No information is lost.
Hibernation is a safeguard condition during which all information
in system memory is saved to the hard disk and power to the
computer is turned off. When you turn on the computer and
resume work, your information is returned to the screen exactly
where you left off. No information is lost.
Hibernation has the following benefits:
Since the computer is turned off and there is no drain on the
battery pack, there is no limit to the amount of time the
computer can remain in Hibernation.
You can manually save your place in any application or use as
a placemarker to pull up a particular screen for a presentation.
Information is automatically saved when the computer reaches
a critical low battery condition (if Hibernation has not been
disabled).
Refer to the "Battery Packs" section of the Quick Reference
for information on low battery and critical low battery conditions.