First, fully charge your laptop battery. Because the battery needs to be charged when not in use, do not use the laptop or run any large programs during this time. After the battery is fully charged, plug it in for another two hours to ensure it is fully charged.
Step 2: Change the way your power supply works
Change your laptop’s power settings so that it doesn’t go into sleep or hibernation mode before proceeding to the next step:
For Windows, open Control Panel and go to Hardware and Sound > Power Options. For ‘On Battery’ and ‘Plugged In’ modes, go to ‘Plan Settings’ and change ‘Put computer to sleep’ to ‘Never’.
macOS: To change battery settings, go to System Preferences > Power Savings and set the Computer Sleep and Display Sleep buttons to Never.
Step 3: Turn off the power.
After setting the power settings and checking that the battery is fully charged, remove the charger. Run the laptop on battery power until the battery is empty. You can continue to use it normally, but do not do heavy work that will drain the battery quickly.
Step 4: Give your laptop a rest.
Do not charge your laptop immediately after the battery runs out and the computer is turned off. Leave it alone and turn it off for at least five hours, or even overnight. In this way the battery can reach a state called ‘fully discharged’.
Step 5: Charge the battery
After the break, plug the laptop back in and charge it to 100% without interruptions. This full charge cycle restarts the battery meter, allowing the laptop to calculate how long the battery will last.
Step 6: Reset the power settings
Once the battery is fully charged and testing is complete, don’t forget to return to the original power management settings to avoid energy waste in the future.
Other tips: Calibration: Your laptop battery should be calibrated every two to three months, especially if you often use it while it is plugged in or if you notice that the battery charge reporting is not working properly.
Do not expose to heat: To prevent the battery from being damaged by heat, try to adjust it in a cool place.
Check your battery life: To keep an eye on your battery health and capacity, you can use built-in tools (like those in Windows or macOS) or third-party apps. This can help you determine when and if calibration is necessary.