Samsung SM-W700 User Manual page 52

Settings
Smart Battery Calibration
If the battery is charged or discharged repeatedly over a short period, the actual battery
power and the detected remaining battery power may be different. Performing a battery
calibration will discharge the battery completely to ensure more accurate battery level
detection.
The battery calculation will take three to five hours. The time may differ depending on
the remaining battery level.
1
Fully charge the battery.
2
Disconnect the charger from the device.
3
On the BIOS screen, tap Advanced.
4
Tap Smart Battery Calibration.
The battery calibration will start and the battery will be discharged.
To stop the calibration, press the Esc key.
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