Panasonic CF-Y2 Series Reference Manual page 39

Battery Power
Accurately Displaying Battery Capacity (Battery Recalibration)
A. When making a setting for [When the alarm goes off, the computer will] in
[Alarms] - [Alarm Action]:
Add a check mark for [Force stand by or shutdown even if a program stops
responding.].
B. Set the value for [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.
The battery pack has a function for measuring, storing and learning about battery capacity.
Using the "Battery Recalibration" function to accurately display remaining battery capacity
requires that the battery pack be fully charged (charged to 100%), then fully discharged. This
procedure should be performed once after you purchase the computer. As you use the
battery pack over a long period of time, the remaining capacity display may become
inaccurate due to aging of the battery pack and other factors. The procedure described
below should be performed again.
NOTE
Perform the following procedure in a temperature range of 10
°
86 F}.
If the computer is turned off while performing the "Battery Recalibration" (electrical
power outage, accidental removal of the AC adaptor or battery pack, etc.), the
"Battery Recalibration" will not be performed properly.
"Battery Recalibration" does not increase the battery's capacity. If "Battery
Recalibration" is executed frequently, deterioration of the battery may result.
1
Attach the battery pack, then connect the AC adaptor.
Remove all peripherals (except for the battery pack and AC adaptor).
39
° ° °
C to 30 C {50 F to