No matter how carefully you are using your laptop, after some period of time built-in battery degrades and loses its capacity thus decreasing the total battery life. Sometimes a bit different thing happens. Battery controller reports incorrect data about estimated work time or remaining battery percentage. Although it is not as bad as it may seem, incorrect data from the controller may cause unexpected shutdowns. For example, the battery indicator shows that you have 15% left but in reality, your battery is almost completely drained or vice-versa. If you suffer from similar problems or see unrealistic estimates, you should calibrate a laptop battery. Here is how to do this.
What is Laptop Battery Calibration?
It is a very simple procedure, not rocket science. All you need to do is charge battery, drain it to zero and charge it back again. This does not cause any harm to the battery.
How to Calibrate a Laptop Battery on Windows 10?
This procedure is universal for any laptop or tablet you use no matter which OS is installed. You can calibrate laptop battery on Windows 10 just like you do it on Windows 7, Windows 8.1 or even Windows XP. There is no software involved, so no need to download any third-party software. Also, do not believe third-party apps, which promise you to somehow extend your battery lifespan or “calibrate” it. All you need to calibrate laptop battery is the device itself, charger, and a few hours to waste.
How Often Should I Calibrate the Battery of My Laptop?
There is no strict rule. Do it whenever you notice any anomalies with your laptop or one time every two or three months. Especially, if you follow recommendations not to charge the battery up to 100% and not to drain it completely. These practices usually prolong battery lifespan but also require regular calibration.
There is another thing you need to know about calibrating battery in a laptop. Battery calibration won’t cure your dying laptop. It just makes sure the controller reports the correct data. If your laptop barely survives 1 hour without a charger, then you probably should consider replacing the battery or the entire laptop.
How to Calibrate Battery in Laptop?
Plug in your computer to the power source and leave it charging for a few hours. Let it charge one or two hours more even if the battery level is 100%. Thus, you make sure the battery is definitely charged. Let the battery cool down a bit by leaving plugged in computer idling for one more hour.
- Disconnect charger from the laptop. Press Win + X and click on Power Options.
- Set Screen and Sleep parameters to Never for both modes. You can change these settings later on.
- Click on Additional power settings.
- Click on Change advanced power settings for the current plan.
- Select Change advanced power settings.
- Expand Battery list and select Critical battery action. Select Hibernate for both On battery and Plugged in.
- Now to go Critical battery level and set the lowest amount possible for both On battery and Plugged in. This parameter may differ depending on which laptop or tablet you are using.
- Now let your laptop idle until the battery drains to zero. When the device is dead, plug it to the charger and wait for the battery to gain all 100% of its capacity. Again, you may need to leave it charging for one or two hours more than usual.
After everything is done, the battery controller should be reporting correct values without unexpected capacity jumps or shutdowns.
How to Calibrate MacBook Pro Battery?
Things are a bit different with Apple laptops. Apple says there is no need to calibrate MacBook battery if you are using the one with a non-removable battery. macOS does everything for you which is nice. Things are different with older MacBooks. If you use MacBook Pro with a removable battery, then you need to calibrate MacBook pro battery using the same idea described above. And since we are talking about macOS, not Windows, make sure your laptop won’t go to sleep when after you left it idling with the charger being disconnected.
- Click on Apple logo at the top-left corner and select System Preferences.
- Open Energy Saver and select Battery tab.
- Slide Turn display off after to Never.
- Also, uncheck both Put hard disks to sleep when possible and Slightly dim the display while on battery power.