Panasonic Toughbook CF-F8EWAZZJM Reference Manual page 30

Battery Power
When using the battery pack (CF-VZSU52W)
• Full charge: Approximately 4 hours [MAX]
• Complete discharge: Approximately 3 hours
"Battery Recalibration" does not increase the battery's capacity. If "Battery Recalibration" is executed frequently, dete-
rioration of the battery may result.
If you have two or more battery packs, perform the "Battery Recalibration" for each battery pack.
If the computer is turned off during the "Battery Recalibration" (e.g., due to power failure, or accidental removal of the
AC adaptor and battery pack), the "Battery Recalibration" will not be completed.
You can also perform the "Battery Recalibration" with the following procedure.
Restart the computer.
A
Press and hold F9 while the [Panasonic] boot screen is displayed just after the computer starts the startup proce-
B
dure.
When the remaining battery power is displayed, press Enter.
C
Follow the on-screen instructions.
D
Switching between Long Battery Life and Extended Operating
Time (The battery's Economy Mode (ECO))
The battery pack is a consumable item, and deteriorates gradually each time it is used.
Use effective switching of the battery's Economy Mode (ECO) to reduce battery pack deterioration, and enable the battery
pack to last a little longer. Switch the battery's Economy Mode (ECO) in accordance with the way you use your computer.
Recommended usage
Operation time
Lifetime of battery
The battery's Economy Mode (ECO) disabled:
In the default setting, the battery's Economy Mode (ECO) is set to
Charge the battery to 100% (fully charged). We recommend that you disable the battery's Economy Mode (ECO) if you
use the battery pack frequently.
The battery's Economy Mode (ECO)
Disabled
Mobile
Using your computer while on the move
Extended
Normal
AC adaptor is connected most of the time
" ".
Disabled
30
Enabled
Desktop
Normal
Extended