Table of Contents
How to Calibrate Your Laptop’s Battery For Accurate Battery Life
Why Calibrating the Battery Is Necessary
How Often Should You Calibrate the Battery?
Basic Calibration Instructions
How to Manually Calibrate a Battery
- Charge your laptop’s battery to full — that’s 100%.
- Let the battery rest for at least two hours, leaving the computer plugged in. This will ensure that the battery is cool and not still hot from the charging process. You’re free to use your computer normally while it’s plugged in.
- Go into your computer’s power management settings and set it to automatically sleep or hibernate at 5% battery.
- Pull the power plug and leave your computer discharging until it automatically sleeps or hibernates. You can keep using your computer normally while this happens.
- Allow your computer to sit for five hours or so after it automatically shuts down.
- Plug your computer back into the outlet and charge it back up to 100%. You can keep using your computer normally.
- Ensure any power management settings are set to their normal values. For example, you probably want your computer to automatically power off the display and then go to sleep when you’re not using it to save battery power.
Your laptop should now be reporting a more accurate amount of battery life, sparing you any surprise shutdowns and giving you a better idea of how much battery power you have at any given time. The key to calibration is allowing the battery to run from 100% to almost empty and then charging it all the way up to 100% again, which may not happen in normal use.