Panasonic CF-20 Series Operating Instructions And Reference Manual page 37

When the battery pack is inserted (example)
N O T E
The battery display may not correspond to the actual remaining battery power in the cases as below. To correct the display, perform
n
the Battery Recalibration (
The battery indicator remains red.
The indicator lights orange and the display shows 99% for a long time.
Low battery warning appears soon after a short time of use.
This can occur when the computer is in sleep for a long time without power supply from the AC adaptor.
The battery display may not be the same as that of task tray. This is not a malfunction.
n
Computer behavior with low battery
The default settings are as follows.
When the battery level becomes 10 %
[Low battery level]
Displays a message that the battery
level is low.
↓
Charge the battery.
Connect the AC adaptor imme-
diately. If you do not have the AC
adaptor, exit the running programs
and Windows, then confirm that the
power indicator is off.
If you have a fully charged spare bat-
tery, turn off the computer, replace
the battery and turn the computer on
again.
N O T E
Battery goes to sleep if the battery is about 5%, may be displayed such as "Not exist" or "Not use" is not a malfunction.
n
Please wait for a while to connect the AC adaptor.
Changing the Battery Charging Speed
The battery charging speed is automatically controlled based on the battery status.
Correcting the Battery Display (Battery
The computer enters hibernation.
Connect the AC adaptor or replace the battery to start up the computer.
Connect the AC adaptor and charge the battery.
If you have a fully charged spare battery, turn off the computer, replace the battery and turn
the computer on again.
When the computer enters hibernation with the battery down and you resume the operation
without charging the battery, the Windows Resume Loader starts up. Follow the on-screen
instructions. After that, however, Windows may not start up normally, or the [Low battery
level]/[Critical battery level] function may not work normally.
Recalibration)).
When the battery level becomes 5 %
[Critical battery level]
↓