Samsung NP-P560-AA03US User Manual page 162

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.
In this case, the actual battery charge and the remaining
charge display will be the same by discharging the battery
completely using the Battery Calibration function, and
then recharging it again.
1
Disconnect the AC power adapter after turning off
the computer.
2
Restart your computer and press the F2 button when
the Samsung logo appears, to start the BIOS Setup.
3
Move to the Boot > Smart Battery Calibration item
using the direction keys and press <Enter>.
4
Highlight Yes in the Battery Calibration
Confirmation window and press <Enter>.
The Battery Calibration function is activated and
the battery is forcefully discharged. To stop the
operation, press the (Esc) button.
This operation requires 3~5 hours depending on the
battery capacity and the remaining battery charge.
161