How to Calibrate Laptop Battery with Simple Steps?

Let us first understand how to calibrate laptop battery and why it is important. Is not it frustrating if your laptop shuts down all on a sudden? You are surprised as there was no warning from Windows. The operating system informed that 30% battery power is still available.

What is the actual problem? It is not shocking that battery capacity will be on wane over time if it is used properly. It has a built-in power meter that informs you about how much capacity is still left. Unfortunately, that is not always the correct estimate.


  • The process to calibrate the battery of your laptop is pretty simple and most systems today provide useful tools for it.
  • Battery calibration will enable you to get an accurate estimate about the amount of power left in it to prevent unexpected shutdown of the laptop.
  • Most laptop manufacturers usually recommend calibrating the battery every two to three months.

How Often One Should Calibrate Laptop Battery?

All the laptop manufacturers recommend battery calibration every two to three months. It gives an accurate estimate of your battery readings.

However, it is less likely that you need to do it very often in reality.

If you are finical about precise reading of your laptop battery, you can always follow the manufacturer’s recommendation.

One point is clear that if calibration is not done regularly, your laptop will shut down without issuing any warning. Once it happens, calibrating laptop battery becomes highly important.

For some latest laptop models, battery calibration is not important at all. For example, Apple does not recommend battery calibration for their latest models with built-in batteries.

However, they suggest calibration for Older Macs having replaceable batteries. You should go through the manufacturer’s documentation to know if you should calibrate your laptop battery or not.

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The basic technique functions in multiple versions of Windows, including Windows 10, 7, 8 and even Vista.

The technique works well for any battery-powered device, including older MacBooks. In case of some latest devices, it may not be a requirement.

Importance of Calibrating Laptop Battery

Laptop battery calibration

It is important for the laptop users to take good care of their laptop battery. For that purpose, you must allow the system for regular discharge before plugging it in and switching it on.

However, that never means you will have to allow the battery to be stripped of its energy before using the laptop each time.

In fact, you should not even allow it to get very low. Regular top-ups are important to add to the life of your laptop battery.

An amazing fact is regular flush-out leaves your laptop battery meter utterly confused.

Even if the users take optimal care of their laptop battery, its capacity will decrease over time and die eventually due to several unavoidable factors including usage, heat and age.

If you don’t allow it to run from 100% down to 0% on a regular basis, the power meter will not be able to figure out how much juice is still available.

For example, even if your battery capacity is reduced to 1%, the power meter shows it 30% and the system dies suddenly.

Calibrating the battery will not extend its life. So, why is it important to calibrate battery? This is because, it gives you an exact estimate of remaining capacity on your battery.

Basic Instructions for Battery Calibration

Basic Instructions for Battery Calibration

It is fairly simple to recalibrate your battery. Allow the battery to run from its full capacity down to almost zero and then charge it back to its 100% capacity.

The power meter will check how long the battery will go on and give you a more precise reading of how much power still remains.

Some laptop manufacturers provide utilities that will do calibration for you. These tools will ensure that your system gets power supply from a full battery.

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What is more, these tools will also disable power management settings as well as allow the battery to get down to zero in order to make sure that the internal circuitry in the battery gets an accurate idea about how long the battery will last.

Check the manufacturer’s website to gather information on how to use the available utilities.

Check the computer manual or help files. The calibration process or tool differs from one system to another (if two are not same models or from the same manufacturer).

Even if a manufacturer does not recommend calibration, there is no harm in doing so. You just need to spend some time for the purpose.

The calibration procedure runs the system battery through the full cycle of discharge and recharge. Read more about laptop battery calibration software.

How to Calibrate Your Laptop Battery – The Steps Explained

How to Calibrate

It is an excellent idea to calibrate by following the manufacturer’s instructions or using the included tools.

However, you can do it even without tools designed for the purpose. The basic process is as follows:

  • Charge your system battery to 100%.
  • Allow the battery to have some rest for a couple of hours while leaving the laptop plugged in. You can use your computer when it is plugged in. Make sure that the system does not get hot.
  • Check the ‘power management settings’ and select ‘automatically hibernate’ at 5% capacity. In some laptops, you can never go down that much. In that case, select the lowest available option.
  • How to calibrate laptop battery
  • Pull out the power plug and allow your laptop to continue running and discharging. You should wait until it automatically hibernates. You can use your machine normally when the process is going on.

Point to Be Noted:

If you don’t need to work on computer while it is undergoing the calibration process, you must not set it to automatic hibernation or switch off its display while it is idle.

The laptop will automatically go into power-saving mode to save power when you are away. That will result into improper discharge.

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Choose when to turn off display If you want to calibrate it while not in use. Go to “Edit Plan Settings” page to set battery to “Balance” and everything to “Never.”

Laptop battery calibration process

  • Let your laptop rest for five hours after it shuts down automatically.
  • Plug in your laptop and recharge the battery back to its full capacity. You can use your computer while it is charging.
  • Set the power management settings to normal values. It helps if you want your system to automatically turn off the display and go into sleep when it is not in use as that saves battery power. This is possible to change the settings when your laptop charges.
  • how to calibrate laptop battery
  • It is more likely that your system will generate a more accurate estimate of battery life and won’t shut down unexpectedly. This will give you a fair idea about how much battery power is still left.
  • The calibration process requires the battery to run from full power to nearly empty level and then charge back to 100% once again. This cycle is not possible in normal use. Once the battery undergoes the full cycle, it will sense how much power it still has and generate accurate readings.

Now you understand that though calibration does not prolong the battery life, it is still important to get an accurate reading about the amount of power still left.

Check your laptop manual to follow the process.