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How to calibrate the battery of your electronic devices

Last week we brought you an article about what is the best way to conserve your battery . From the article, several comments came up about what is the best method to calibrate the battery of your electronic devices.

When is it necessary to calibrate the battery?

Calibrating the battery is a serious matter. Therefore, it is not recommended to carry out the calibration process unless it is necessary . If this is done too frequently, it could damage the battery.

How to calibrate the battery of your electronic devicesHow to calibrate the battery of your electronic devices

That said, when does it need calibrating? The symptoms are all those related to the percentage load. For example, if your iPhone tells you that it has 5% battery life left and suddenly turns off, it means there’s a calibration problem. Another example would be just the opposite, that the charge level never reaches 100%. In such cases, it’s a good idea to calibrate the battery before it gets any higher . However, it is not recommended to do the process more than twice in a row, just as it is not recommended to do it more than once a month.

If your iPad charges slowly, you can do other verification processes before performing a battery calibration, such as cleaning the charging port.

How to calibrate the battery

That said, let’s go to the nougat. Although there are many ways to perform this procedure, this is the one recommended by Apple (with some small modifications):

  1. We charge the device’s battery up to 100% of its charge.
  2. Once it has reached maximum charge, we will leave it plugged in for approximately two more hours. This will ensure that it is charged as much as possible.
  3. Discharge the device’s battery to 0%. There is nothing special about this, just discharge it with normal use. However, if you are in a hurry for some reason, you can do heavy things to make it discharge faster, such as opening a game.
  4. Once the battery is completely discharged, leave the device to rest for 6 to 8 hours. This will allow the battery to discharge any residual charge that may remain.
  5. Then we’ll charge the phone, and leave it plugged in for 6 or 8 hours. This step is recommended to be done with the device turned off.
  6. Then we disconnect the device from the power and let it rest for about two hours.

And that’s it! That’s it. It’s true that it’s a long process to perform and that sometimes it’s complicated (for example, if the device is an iPhone or any other mobile, then we won’t be able to use it). But there are times when there is no other choice.


As you can see, it is a process that is not very comfortable to do, but it can be useful on certain occasions. The most important thing is not to abuse this process of calibration. By calibrating the battery we are pushing the battery to its limits, and as we saw in last week’s article, that’s not a good thing. In fact, for mobiles it is recommended to always have the battery between 20% and 80%.

But the charge level is not the only thing we should look at to take care of our battery. Another factor that is also important is the temperature , both in use and storage. In addition to this, the battery can obviously also be damaged by shocks or in the presence of high electromagnetic fields. If you want to know more about battery care, I recommend you visit Apple’s website, where they have a section on batteries .

What do you think? Have you ever calibrated your battery? Have you ever needed to calibrate your iPhone, iPad, MacBook or any other device?