Panasonic CF-Y2 Series Reference Manual page 38

Battery Power
When the Remaining Battery Charge Becomes Low
The following is factory default setting.
When remaining battery capacity falls to 10%
[Low battery alarm]
Displays a message indicating the low
battery level.
Charge your battery.
Connect the AC adaptor immediately. If
you do not have the AC adaptor with you,
exit any programs currently running, then
exit Windows, and confirm that the power
indicator is off.
If you have a fully charged spare battery,
turn off the computer, replace the battery,
and turn the computer on again.
Do not replace the battery pack while the computer is in standby mode. Otherwise, all
unsaved data will be lost.
Above settings can be changed.
A Display [Alarms] screen.
Select [start] - [Control Panel] - [Performance and Maintenance] - [Power
Options] - [Alarms].
B
Set alarm operations and remaining battery level for operating alarm functions.
When disabling the speaker by pressing Fn+F4, the sound alarm is also
disabled.
When remaining battery capacity falls to 5%
[Critical battery alarm]
Displays a message indicating the low
battery level.
The computer will enter hibernation
mode.
Connect the AC adaptor or replace the battery
before starting up the computer next time.
Connect the AC adaptor, then charge the
battery.
If you have a fully charged spare battery,
turn off the computer, replace the battery,
and turn the computer on again.
After the computer enter hibernation
mode when the battery runs down, if
computer operations are resumed
without charging battery, Windows may
not start up properly, and in some cases
the alarm function may not operate
properly from that point on.
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