Panasonic Toughbook CF-28 Series Reference Manual page 32

Battery Power
Windows 98 Windows 2000
Remaining Battery Level Confirmation by Alarm*
The computer can be set to notify of a low battery level, etc., in [Control Panel] -
[Power Management]*
specified, the computer sets off an alarm and displays a message indicating the low
battery level.
Set the value for the [Critical battery alarm] to 5% or more. This is necessary for
the standby or hibernation function to be completed (assuring data is saved) when
the battery level is low.
Windows 98 Do not add a check mark for [Display message] for [Notification] in
[Alarms] - [Alarm Action]. This may prevent the computer from re-
suming.
When making a setting for [When the alarm
goes off, the computer will:] in [Alarms] -
[Alarm Action], add a check mark for [Force
standby or shutdown even if a program stops
responding].
If the computer shuts down or enters either
the standby or hibernation mode by the
Alarm settings function, start up the com-
puter or resume operations after connect-
ing the AC adaptor. If the computer starts
up or resumes while the AC adaptor is not
connected, Windows may not operate prop-
erly or alarm operations may stop working.
* 1 When disabling the speakers with the Setup Utility (or pressing
also disabled.
* 2 Windows 2000 : [Power Options]
When the Remaining Battery Charge Becomes Low
save your data and power off your computer
Following that:
Plug in the AC adaptor, and fully charge your battery.
Use a spare battery if you have one.
If you have neither the AC adaptor nor an extra battery, power the computer off.
Windows NT
Red indicator lights
3
Beep sounds*
(at approx. 9% capacity)
* 3 When disabling the speakers with the Setup Utility (or pressing Fn + F4 ), the warning
beep is also disabled.
About High Temperature Mode
This computer has a high temperature mode function that prevents the degradation of
the battery in high temperature environments.
We recommend setting the high temperature mode function when installing the com-
puter in a car, etc. To do this, set [Environment] in the [Main] menu of the Setup Utility to
[High Temperature]. Note that a level of 100% in the [High Temperature] mode is about
a level of 80% in the [Normal Temperature] mode.
After switching from [Normal Temperature] to [High Temperature], or vice versa, the
remaining battery will not be displayed properly until the battery pack is completely
discharged or fully charged.
2 - [Alarms]. When the battery level goes down to the level
Standby Mode
1
(This is the Windows 98 screen. The Win-
dows 2000 screen slightly differs.)
Fn + F4 ), the alarm is
(at approx. 4% capacity)
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