Solution to some iPhone and iPad problems: calibrate the battery — 2022

Time passes both for humans and for electronic devices and components. In the case of batteries, it is completely normal to check how, after a certain time, it has become out of calibration. In fact, one of the most common iPhone failures lies in the short duration of its batteries or even occasions in which, for example, still having a 20% battery, the phone turns off. We also find iPhone that at 1% battery usually lasts quite long. When all this happens, it is usually because the battery is not properly calibrated, so in this article we show you how to calibrate an iphone battery correctly and, with it, try to increase the useful life of the device.

When to calibrate the iPhone or iPad

There really is no written rule on when to calibrate the device battery or not. Nor are there any times that indicate that it should be done once every few months. The highest recommendation is to do it when the device has battery failure . Here are some of them:



    A percentage is displayed that is not real.In other words, as we mentioned at the beginning, the device shows a battery percentage on the screen that does not correspond to the real one because it turns off when it is supposed to still have a high number left. For example, your device turning off when you still have 10% battery left or similar. It can also happen the other way around and it is that it stays at 1% for a long time. It takes a long time to charge.Sometimes we believe that an iPhone or iPad charges very slowly, but this does not really mean that this is really happening, but rather that it shows an erroneous percentage as we mentioned in the previous point. If a device has been charging for 6 hours or more and despite this it has not reached 100%, it is evident that something strange is happening because even with the slowest chargers it is not normal. Another thing would be that the charger fails, but if it happens with all of them, the problem will be that the battery is not well calibrated. Battery health does not reflect reality. Actually, the most common thing is that the health of the battery goes down as time goes by. However, if it has suddenly dropped a few levels, it may be due to two reasons: the first is that it has recalculated the percentage because it did not drop when it should or that it is directly a wrong calculation. Calibrating the battery will also help this percentage to display more accurately. If the battery is new. Normally the original replacement batteries that they put in Apple and in authorized services are usually in very good condition and although it will automatically acquire its best shape automatically over the days, it is recommended that a calibration be carried out anyway to finish adjusting it. to device. If the iPhone or iPad is new. Here we present the same reasons as in the previous section, since in the end the battery will also be new and therefore will require a calibration process. Although it must be said that in these cases it is not as necessary as when an old battery is replaced with a new one.

Process to calibrate the battery of an iPhone or iPad

The procedure to follow, although long, can be very effective and does not imply too much complexity. Now, before proceeding to calibrate the battery, we believe it is important for you to know that there are also negative effects that you should know about before the process.

Calibration Risks

When performing a battery calibration, be it an iPhone or an iPad, the device will not experience a negative change in performance. Nor is it expected that this will improve autonomy considerably, since the battery in the end is what it is. Nevertheless It is not recommended to abuse this method . Contrary to what they may tell you, and according to the information provided by Apple itself, it is not something that needs to be done on a regular basis.

Furthermore, it could become counterproductive . The reason for this is that when these adjustments are made, the battery needs to be pushed to the limit, spending a full charge cycle and then exposing it to an internal readjustment process when it is depleted. Actually, the impact on the health of the battery is minimal in a calibration, but if the process is done with some regularity, deterioration can end up rotating in the same way as if the habit of not charging a device until the battery runs out is maintained. .

Steps to follow

Notably, an iPhone battery it is considered already worn when over 500 load cycles , that is, having been downloaded and loaded from 100 to 0,500 times. Although the latter is not literal, since if, for example, you usually charge the phone when it is at 90%, the charging cycle will be considered complete when you have charged it 10 times. In any case, battery calibration is useful when the iPhone or iPad experiences problems like the ones mentioned above even though its cycles and health are good.

To calibrate the battery of your device you simply have to follow these steps:

    Charge iPhone/iPad up to 100% normally. You don't need to charge it more than necessary, simply reaching 100% of its level will suffice (even when this percentage is displayed in an apparently erroneous way).
  1. Once you reach this percentage, do not disconnect the device of the charger and keep it like that for about 2-3 hours. You will be able to use the device normally in that time, but always plugged in without having disconnected it for a moment.
  2. Once the indicated time has elapsed, proceed to unplug it and let the battery drain completely until the device turns off. Obviously you can use it normally and in fact it is even advisable that you carry out actions that encourage it to run out.
  3. Once the phone has been turned off due to lack of battery, keep it in this state for 6 hours approximately. Do not try to turn it on during that time.
  4. When that time has passed, put it to charge via cable . Again, we recommend that you do not interrupt this process by disconnecting it, even for a second. It's important that you let it charging for 6 hours and that, even if it turns on, try not to use it at that time. In fact, it is advisable that you turn it off manually once it has been turned on, since the device will turn on shortly after charging.
  5. After the recommended 6 hours have elapsed, disconnect it from the mains and leave it for about 5-10 minutes in that state and proceed to turn it on again. You can now use the iPhone / iPad normally.

Once this process is done, the battery will be calibrated and you should stop experiencing problems related to it. Of course, remember that it is not something magical that suddenly increases the health of your battery, but it will allow the percentage seen on the screen to be more faithful to reality and may even give you a little more use of the device, but without great boasts.

And regarding the doubt if a wireless charging base can be used Since many iPhones are compatible with them, the truth is that it is not advisable. And it is not because this type of load is not as efficient, in addition to the fact that micro-cuts can be produced that end up weighing down the process. Therefore it is advisable that, even if it is exceptional in your routine, you charge it via cable.

Frequently asked questions

Following this procedure, you may have several questions about what is achieved with a calibration. Know if it restores the health of the battery, if it is capable of fixing a defective battery or what to do if after calibration you do not experience any change. In these next sections we address these issues.

Does it restore battery health?

The most recent versions of iOS incorporate a very useful function that allows us to check the health of the iPhone battery. If this is at 100%, it will be in perfect condition, and it will continue to be considered normal in percentages that do not fall below 80%. In any case, the device itself gives you an indication when something is wrong with the battery. You can check it from Settings>Battery>Battery health.

iphone battery health

Now, you are probably wondering if this percentage can be restored by calibrating the battery and the answer we give you is clear and convincing: no. Calibrating the battery does not affect the percentage of health. If the battery is really deteriorated, be it to a greater or lesser degree, calibrating it will not make it recover. In the same way that, if it is not damaged, it will not cause it to suffer deterioration (unless calibrations are done very frequently).

Does it work if the battery is defective?

At the beginning of this post we have commented on some cases in which the batteries present somewhat strange failures and that on many occasions can make us see that they are defective. However, what calibration does is fix understanding problems between this element and the system, so that the real percentage can be known from the iPhone and that the duration adjusts to what is expected.

Now, if the battery really has a factory defect for which it maintains a constant malfunction, it will not matter if you do not calibrate it or if you do it fifty times, since the battery will not revive if it was already defective. In these cases, it would only be fixed by changing it for a new one and, if possible, completely original.

What to do if it does not fix the battery problem?

If after performing the battery calibration steps it still does not work, it is evident that the battery could be damaged or that the device has some type of problem in other components that directly affects it. Therefore, the chances of trying to solve it on your own decrease considerably, so it is advisable to go to technical support so that specialists can examine it.

It is important to go to official Apple technical support or, failing that, to one of the well-known SATs for its acronym in English for Authorized Technical Support. In these places they not only have qualified professionals for the exact detection of the problem, but also have original tools and components that will make your iPhone or iPad work normally again. About whether the repair has some kind of cost, we cannot tell you anything with certainty, since the problems could be different and it will depend on what is wrong. In any case, it must be said that you could even receive a free service in case it is determined to be a factory defect and the device is under warranty.

apple technical support website

We remind you that you can make an appointment at an Apple Store or SAT through the following ways:

  • Going in person to a store or SAT.
  • Apple support website .
  • Through the telephone number 900 150 503 (free from Spain).
  • From the iOS and iPadOS Support app.
apple support apple support Descargar QR-Code apple support Developer: Apple

We remind you that the home service is also available within the support options through which a courier service will pick up the device, take it to technical support and then follow a similar procedure to send it to you repaired.