Samsung Galaxy Book Flex User Manual page 74

Settings & Upgrade
Using the Battery Calibration Function
When charging/discharging the battery repeatedly for a short
time only, the battery usage time may be reduced by the
difference between the actual battery charge and the remaining
charge display.
You can make the actual battery charge and the remaining charge
display the same by discharging the battery completely using the
Battery Calibration function, and then recharging it again.
The screen images and terms may differ from the actual
product depending on the computer model and driver
version.
1
Turn off the computer and then disconnect the AC power
adapter.
2
Turn the computer back on, and press the F2 key to enter the
Setup screen.
3
Select Advanced → Smart Battery Calibration.
4
The Battery Calibration function is activated and the battery is
forcefully discharged. To stop the operation, press the Esc key.
This operation requires 3–5 hours depending on the battery
capacity and the remaining battery charge.
74