Android phone battery calibration. When is battery calibration needed and how to do it

On a newly purchased mobile device time battery life significantly higher than a few months later. The problem suggests a low-quality battery and the need to replace it. However, do not rush and spend money on purchasing a new component. In most cases You can resolve the issue by following the instructions below. Consider how to calibrate the battery on Android using a manual or software method.

Determining the "calibration" value of a battery

Calibration is understood as the adjustment of the operation of a certain component, as a result of which it is brought to an optimal state. In the case of a battery, calibration helps to set the correct value for its volume, to prevent premature power failure and rapid discharge.

Signs of the need for a procedure

Before proceeding with the recommendations below, you should make sure that the battery really needs to be calibrated. The main signs of the need for adjustment include:

Spontaneous shutdown of a smartphone or tablet in the presence of a residual amount of charge. For example, the device is forcibly turned off when the indicator shows another 5% charge. In a normal situation, the device should continue to work even at a rate of 1%.
Reduced battery life. If initially the smartphone could function without additional recharging, for example, 3 days, and then this period was reduced to one day, this is explicitly indicates the need to calibrate the Android battery.
Inability to get 100% charge. The problem is rare, but its essence lies in the fact that during the replenishment of the battery capacity, it is not possible to reach the maximum indicator indicator.

note

If at least one of these signs was noticed on the mobile device, you should calibrate using one of the methods presented below.

Manual battery calibration Android

The method involves setting up using certain sequence actions for charging and discharging the battery without the use of software tools. To carry out the procedure, you only need a charger that came with your phone or tablet. Instruction:

Required in full charge the battery, then turn off charging and . Next, the smartphone is put on charge again, but in the off state. Immediately after connecting charger The phone's screen will light up and display the current state of charge. You should again wait for the indicator to 100%.
The next step requires turning on the machine and changing its settings. Must be disabled automatic transition sleep mode after a certain period of inactivity and set the brightness to the maximum level. This will help speed up the discharge. Other methods can be applied - include the film in high quality with using Wi-Fi channel. The main goal is to discharge the battery up to complete shutdown.
The final step will be recharging up to maximum value. When the full capacity is filled, you can return the settings to their original position.

It is important to know

After performing these manipulations, calibration will occur and trouble with fast consumption energies must stop.

Android battery calibration through apps

An alternative calibration option would be use of special programs. Consider the process on the example of two most popular apps this category.

Battery Calibration

The application is available for download in the Play Market and, according to the developers, it can be useful in the following cases:

done ;
produced ;
installed ;
the battery has been replaced;
the charge level is incorrectly displayed on a numerical or graphical indicator.

The software is used for:

battery calibration;
obtaining detailed information about the battery: temperature, condition, manufacturing technology;
determining the current and maximum acceptable level voltage;
sound notification about the end of the charging process.

You can calibrate the battery on Android using "Battery Calibration"You can do the following:

Will be useful

According to users, the application helped to significantly increase the battery life of mobile devices and eliminate rapid discharge.

The essence of this Android battery calibration program is to display the amount of charge. Hence, knowing the capacity of the battery, you can bring the indicator to the correct value. Before proceeding with the installation and use of the application, you need to look at the battery capacity. This is done in one of the following ways:

When the necessary information received, you can run the application and proceed with the calibration. To complete the procedure, you must:

Smartphone users often face battery problems: they complain about a sudden drain of charge, automatic shutdown and situations when the device simply refuses to charge. These problems occur due to different reasons, however often due to poor battery calibration. If you have similar problems, then we recommend that you learn how to calibrate the battery on Android in order to give it a “new life”.

What is battery calibration?

Android OC includes the Battery Stats Checker service. It basically shows the total battery level and percentage used by programs and hardware. Unfortunately, when Battery Stat Checker fails, the displayed charge level does not match the actual charge. Symptoms of this:

turning off the device before the icon with the percentage of charge shows 0%;
uneven discharge: rapid replenishment of battery capacity, and then its instantaneous drop by 10-20%;
"Sticking" on one charge indicator for a long time.

The list is not complete, however, the main manifestations look like this.

The battery calibration process will reset and reconfigure the system as well as the controller to improve the accuracy of the output.

When to calibrate a battery?

Do this after the battery has been through 55-60 charge cycles, and you will feel that the screen time has decreased for no apparent reason, and there is also instability in the battery.

We also recommend that you calibrate after installing custom firmware, because there may be a sudden drop in the charge level at some point, even if before that everything was stable. This may be due to the fact that installing third-party assemblies corrupted the "batterystats" document.

Due to the calibration, which you can easily do yourself, the indicators displayed Android Battery Stats are synchronized with the actual charge level of the "bank".

Before calibration, check the condition of the battery and firmware to cross out their damage from the list. possible causes fast discharge or no charge.

Check the physical condition of the battery

The battery of a smartphone, depending on the model and the process of use, retains its capacity well for a year. However, then it can be greatly reduced, especially due to overheating. So it is advisable to study appearance battery by removing it from the phone. Check it for bulges and any defects that signal that it is over. If you have a non-removable battery in your phone, remove the cover with a suction cup and inspect the battery.

Update Firmware

From time to time there are problems with the software, which entail failures of the regulator. If you encounter this, then first check for firmware updates. They often carry patches and fixes that affect the operation of the software with the battery.

Check ports

USB connectors are quite reliable, but sometimes they fail due to voltage drops, damage, or moisture. Check for any deformation in them, change the cable, try to connect the smartphone to the computer if the device does not charge at all.

Calibration for devices without root access from Google

If your gadget is not rooted, you do not know how to get it, and do not want to do it at all, then try this manual. Although it is a bit more complex, longer and handmade, it is a good option offered by Google.

Turn on the device, connect to power and charge for eight to ten hours.
Disconnect your phone from the cable and turn it off immediately.
Let it charge for another hour.
Now turn on the device for a couple of minutes.
Turn it off and charge for another hour or so.
Pull out the charging cord, turn on the device.

Use mobile in normal mode. But wait next time full discharge and plug into an outlet overnight.

The procedure erases and resets the non-root battery statistics database and restores it. But it may take several such runs for the result to make itself felt.

For rooted devices

You can do the same for them, because it is effective manipulation for calibration. However, it makes sense to resort to simpler methods.

Method number 1 (only Root)

If you have a rooted phone, the calibration procedure is much easier, as there are applications that help you quickly complete the reset of the traffic controller. We suggest you use the Battery Calibration program, which is available in Play market. This is one of the most simple applications to complete this task.

Do the following.

After you have downloaded the program, run it, grant superuser rights.
Now connect your phone to the charger and charge up to 100%.
Once the device is fully charged, click "Calibrate".
Next, disconnect your phone from charging.
Perform a full charge-discharge cycle (that is, discharge the smartphone until it turns off and plug it into the outlet for the night).

This completes the process. Again, keep in mind that several such cycles may be required, although one is often sufficient.

Method number 2 (Root + Recovery)

If the first method didn't work, try this one. Remember that it will also need a working root, as well as Recovery. Be sure to download "Battery Calibration" from the market, we will need it here as well.

Everything is ready.

Method number 3 (only Root)

Pre-install a file manager that has access to system files and folders, for example, Root Explorer.

So, that's it! Now you know how to properly calibrate. We tried to cover almost all really working methods for correcting errors in reading the charge level. So try them out before buying new batteries.

Sometimes after buying a new Android device or during operation, the battery shows unnatural or incorrect values of the remaining charge. There are sharp dips from 50 to 15%, with fully charged 105% is displayed, etc. This indicates incorrect transmission of information about the current battery capacity. In this case, calibration is required.

What is battery calibration

Battery calibration means forced update information about the actual battery capacity.

Why Calibration Is Necessary

To display the correct remaining energy information, the device uses the statistical data obtained while charging the battery. During operation / storage, the battery degrades, so the values of the real capacity and the statistical one diverge. The smartphone reports a 100% battery charge, but in practice only 70-80% is accumulated or turns off when in reality there is 50% or more energy left.

When to Calibrate a Battery

The procedure is performed every time when the display of the remaining charge is unnatural, and when the battery is replaced. When the device long time inactive in disabled state. After changing from factory to modified firmware and vice versa. In this case, no more than 1 time in 3-6 months. First you need to make sure that the battery has not failed. Before learning how to calibrate a battery, be sure to read the safety guidelines.

Preparation and Precautions

Before calibration, you must backup important information located in internal storage. This is done in case the battery refuses to accept a charge during an extended battery calibration or a charge/discharge cycle.

Extended calibration should not be interrupted and/or when it is necessary to fully discharge the battery. The problem will not be solved, for that the degradation of the battery will accelerate.

Do not abuse and carry out advanced battery calibration / charge-discharge cycle more than 1 time in three months, this accelerates battery wear.

Method 1: easy (ROOT available, battery removable / built-in).

This method of calibrating the battery is gentle and does not require a full discharge cycle.

Charge the device up to 100%.
Without removing the power cable, we delete it, but rather we move it to another folder, the file along the path: /data/system/batterystats.bin. The operation is performed in the file manager.
Turn off the smartphone / tablet and connect to the charger.
We are waiting for the indicator with 100% charge to appear on the screen.
We remove the battery, while not disconnecting the power cable.
We are waiting for a reboot and a notification in the form of a battery icon with a question mark. Only after that we install the battery back. If the download does not occur, it is worth trying another cable and / or memory.
The charge will quickly rise to 60%. After reaching the charge level of 100%, the calibration is considered completed. If the process stops at a different battery level mark, wait until the device charges.

Important!

For smartphones and tablets where the design does not allow the battery to be removed, skip steps 5 and 6.
Charge only with the mains adapter.
If the machine is loading operating system, at the time of connecting the ultrasound, use less powerful adapters: 5V/750mAh or 5V/550mAh.

Method 2: alternative easy (there are ROOT rights, the battery is removable).

To calibrate the battery in this way, as in the previous method, you will need root rights.

We charge the mobile device up to 100%.
Without disconnecting from the memory, delete the batterystats.bin file.
Turn off the smartphone / tablet, disconnect the charger and remove the battery.
We wait 3-5 minutes and install the battery back, turn on the smartphone / tablet and use it.

Method 3: advanced (the presence of ROOT, the battery is removable / built-in).

The calibration method requires a full battery cycle.

We charge the battery up to 100%.
Without removing the power cable, delete the batterystats.bin.
We discharge the device until it is completely turned off.
We connect to the charger.
We are waiting for the end of a full charge.
We turn on the mobile device and use it.

Method 4: without ROOT rights (removable / built-in battery).

In order to calibrate the battery without root rights, you will need to perform a full charge / discharge cycle. The instruction is similar previous method, where you should skip the second paragraph. If the battery is removable, after a complete discharge, it is necessary to remove the battery for 3-5 minutes. Further according to the instructions. Do not forget that in this case, the battery charge should also be 100%.

Conclusion

Battery calibration helps correct display energy consumption, which will improve autonomy. It should be understood that the procedure is powerless if the degradation of the battery has reached the limit. Calibration will not improve battery life if consumption is due to hardware or software part mobile device. In addition, be aware of the consequences of extended battery calibration and a full charge-discharge cycle.

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Let's look at how to calibrate the battery on Android phone or a tablet to return the capacity to him and he is wrong.

This article is suitable for all brands that produce phones on Android 9/8/7/6: Samsung, HTC, Lenovo, LG, Sony, ZTE, Huawei, Meizu, Fly, Alcatel, Xiaomi, Nokia and others. We are not responsible for your actions.

What is battery calibration?

Batteries modern tablets and Android smartphones have enough capacity to mobile gadget Without recharging at an average load, I was able to work for more than a day. The ability to hold a charge weakens over time, and the device has to be charged more often.

In battery operation, the first serious problems often start after a full 500 discharge/charge cycles. In some situations, already after 100 - 200 cycles, a decrease in the duration of the device can be observed, and if taken in time, then after a few months.

For the average user, the first thing that comes to mind is a battery replacement. This measure is extreme, it should be resorted to when the battery has physically exhausted itself. It is better not to rush, but to begin with, calibrate the battery.

Battery calibration is bringing the battery to an optimal state. Such optimization is necessary when problems appear in the operation of the device that are not caused by the physical wear of its components.

Calibration may be due to:

after the battery has been fully charged.
Disconnecting the device from autonomous power when it reaches 50 percent or less.
fast discharge batteries that have not served their useful life.
Stop charging progress at a level less than 100 percent.

Android Battery Calibration Methods

There is nothing special or difficult about the calibration procedure. You need to follow the instructions that we will cover later in the article.

Calibration in practice can be performed in the following ways:

With root access
Without root.

More work to be done can be classified as follows:

Work with engineering menu ().
Application additional applications.
Manual calibration.

The success of the calibration process often depends on the chosen method. With correctly carried out actions in practice, all of the listed options give a good and quick result.

hard reset

You can calibrate the battery next instruction:

We charge and discharge the gadget completely 5 times.
We turn off the tablet or phone after the last charge, we wait a few seconds.
We spend hard reset. For this . Each gadget uses its own method of action. Often it is enough to hold down the volume and power buttons for a few seconds. Then select the appropriate operation.

The performed manipulations will allow the gadget to perceive the received charge level as one hundred percent. Thanks to this, the battery will start working properly.

Without apps

This method allows you to calibrate the battery on your Android device without additional software and root access. Only need to work with the battery and charger, no additional actions not required.

We perform the steps:

Fully charge the battery of the device. After that, disconnect the device from the network and turn it off.
We connect the charger cable to the disconnected gadget and charge it until the indicator shows 100% charge and becomes in green.
Turn on the device and refuse the function automatic shutdown display. We do this in the menu settings "Display Settings" and "Sleep Mode".
We charge the device again with the screen on up to 100%.
Now you can activate the "sleep mode" and work with the device.

Battery Calibration

This is one of the most simple ways, capable of putting in order the charge readings that the power controller takes. We perform the following algorithm of actions:

This solution is not a panacea. The application in some situations may be inoperable and harmful, which the developers warn about.

CurrentWidget: Battery Monitor

This method is more complicated, since you need to know in advance real capacity battery of the device that needs to be calibrated. If the battery is original, then the data about this is located on it itself or on the box from the tablet or phone. After that we download small program widget and execute the instruction:

Often the above actions are enough. If this does not help, then we turn to another method. CurrentWidget: Battery Monitor is not compatible with some devices, such as Samsung.

The Android OS is notorious for its sometimes insatiable appetite for battery life. In some cases, due to its own algorithms, the system cannot accurately estimate the remainder of this charge - that's why situations arise when the device, having discharged to the conditional 50%, suddenly turns off. The situation can be corrected by calibrating the battery.

Strictly speaking, calibration is not required for lithium-based batteries - the concept of "memory" is characteristic of older batteries based on nickel compounds. In the case modern devices, this term should be understood as the calibration of the power controller itself - after installation new firmware or replacing the battery, the old charge and capacity values are remembered and need to be overwritten. You can do it like this.

Method 1: Battery Calibration

One of the easiest ways to tidy up the charge readings taken by the power controller is to use the application designed for this.

This solution, unfortunately, is not a panacea - in some cases, the program may turn out to be inoperable and even harmful, which is what the developers themselves warn about.

Method 2: CurrentWidget: Battery Monitor

A little more hard way, for which you must first know the real battery capacity of the device that needs calibration. In the case of original batteries, information about this is either on the battery itself (for devices with a removable battery), or on the box from the phone, or on the Internet. After that, you need to download a small widget program.

Generally, the above steps are sufficient. If it does not help, you should turn to another method. Also, this application is not compatible with devices from some manufacturers (eg Samsung).

Method 3: Manual calibration method

For this option, you do not need to install additional software, but it can take a lot of time. To manually calibrate the power controller, do the following:

Charge your device to 100% capacity. Then, without removing it from charging, turn it off, and only after completely turning it off, pull out the charging cable.
In the off state, reconnect to the charger. Wait for the device to report a full charge.
Disconnect the phone (tablet) from the power supply. Use it until it turns itself off due to battery drain.
After the battery is completely dead, connect your phone or tablet to the block and charge to the maximum. Done - the correct values should be recorded in the controller.

As a rule, this method is an ultimatum. If after such manipulations problems are still observed, it is possible that the reason is physical problems.

Method 4: Deleting controller readings via Recovery

Perhaps the most difficult way to experienced users. If you are not confident in your abilities - try something else, otherwise do everything at your own peril and risk.

Summing up, let us remind you again - if none of the above helped you, then most likely the cause of the problems is in problems with the battery or the power controller itself.