HP Compaq Presario,Presario R4000 Hardware And Software Manual page 49

Power
Identifying Low-Battery Conditions
Low-Battery Condition
When a battery pack that is the only power source for the
notebook reaches a low-battery condition, a text warning message
is displayed.
If you try to start the notebook from a battery pack that is in a
low-battery condition, the battery light blinks.
Critical Low-Battery Condition
If a low-battery condition is not resolved and the amount of
charge remaining in the battery pack continues to drop, the
notebook eventually enters a critical low-battery condition. If
the notebook is on or in standby when a critical low-battery
condition is reached:
■
If hibernation is enabled, the system initiates hibernation.
Some unsaved work may be lost.
■
If hibernation is disabled, the notebook remains briefly in
standby, and then shuts down. All unsaved work is lost.
The battery light blinks until the notebook shuts down.
Hibernation is enabled by default. To verify that hibernation
remains enabled:
»
Select Start > Control Panel > Performance and
Maintenance > Power Options > Hibernate tab.
If hibernation is enabled, the Enable hibernation check box
is selected.
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