Numerous complaints from laptop owners first appeared on the official Microsoft forum in 2010. They are caused by incorrect battery operation - the charge of a good battery "drained" in half an hour or less. What is calibration? Calibrating the laptop battery eliminates the problems of discrepancies in the readings of the controller and battery cells, brings the charge levels of both to the same value. Periodic adjustment of the energy capacity of the battery prevents possible mistakes controller.
How to calibrate a laptop battery
The power supply of the device is controlled in 2 ways: automatically and manually. This process helps to get rid of remembering when the device connected to the network. Subsequently, the charge consumption goes up to this value. To understand whether your battery needs this procedure or not, you should determine the capacity of the battery. For this you need:
- Run command line on behalf of the administrator.
- Run the powercfg.exe-energy-output d:Nout.html command. Value (d:Nout.html) – save location, report file name.
- Go to drive D (or another), open the specified report file.
- Find the "Battery Information" section. Recalibration is required if there is a difference in the last two paragraphs of this section.
With the help of special programs
According to Microsoft, laptop models with a "battery" problem are: Samsung Q70Aura Tirana, HP dv6, Acer Aspire 6920, laptops from ASUS, Lenovo and many others. A Microsoft representative claims that the "BIOS" (BIOS) gives incorrect information about the battery life. How to do battery calibration? Lenovo laptops are equipped with a special utility for this purpose. If there is no such installer, you should download it. Lenovo Idea laptops have an Energy Management program in their arsenal, the recalibration process with its help looks like this:
- Launch.
- Reset the specified parameters (click on the 2nd icon in the lower right corner of the window).
- Starting the calibration process (click "Start").
- Closing all programs, connecting the laptop to the adapter.
- Continuation of the process (click "Continue").
Using the computer during the current settings is not recommended. The process takes a long time, during which the battery is fully charged and then discharged to zero. A program for calibrating a laptop battery on some models (including Samsung) of devices is built into the BIOS. Exist universal programs for all laptops - BatteryCare, Battery Eater. It will not be difficult to calibrate the battery through bios. To perform a calibration, you will need:
- Restart the laptop, when you turn it on, press Delete, Esc or F2.
- On the Boot tab, run Smart Battery Calibration.
- In the window that appears, select Yes. After the calibration is completed, exit the program (press Esc).
Manual Battery Calibration
Manual recalibration is a valid option for correcting controller errors if it is not possible to regulate the power supply with programs. This procedure is performed in three steps: charge the battery as much as possible, discharge it completely, charge it again to 100%. When you disconnect your computer from the network, its power plan changes, so you will not be able to completely discharge the device. To remove obstacles, follow these steps:
- Open the toolbar and set the view to "Large Icons".
- Go to the "Power Options" section.
- Create a meal plan (in the menu on the left).
- Set to high performance and select a plan name.
- Put a ban on the settings "Sleep", "Turn off the display".
Video instructions: how to do a laptop battery calibration
High-quality work of portable devices plays an important role in the modern rhythm of life. Many do not imagine their existence without a laptop, tablet, smartphone. Reliable battery ensures uninterrupted operation of devices. The battery is the vulnerable part of any device. For its adequate operation, it is necessary to take measures to eliminate controller errors. By using simple actions you will significantly extend the battery life of the laptop. Step-by-step instruction on HP and ACER laptop power management are covered in these videos.
HP
ACER
Almost every model of a modern laptop is equipped with lithium-ion batteries of different capacities, depending on the specific equipment. This approach makes it possible to ensure long-term operation of the device in one charge cycle, which is why portable equipment is valuable. One way or another, any battery gradually loses its capacity over time and discharges faster, especially when heavy loads on CPU, video card and HDD. However, if you operate the laptop correctly, then the threshold for reducing the efficiency of offline operation will occur very slowly.
Laptop battery calibration is the most important step in the initial setup of a new device, which is also relevant for other equipment running on Li-ion batteries such as smartphones and tablets. This procedure is recommended for both immediately after purchasing a laptop, and in the process of using it. Calibration involves the intentional conduct of charge-discharge cycles, and is done so that the controller chip can display the real percentage without glitches. In addition, this procedure sometimes helps to "extend the life" of the battery when, for example, there is a sharp drop in charge or offline work lasts no more than 20-30 minutes in normal load mode.
There are several ways to do this operation today, and one of them is manual calibration by means of standard tools Windows. The method works on any version of the OS and is practically the same, all you need is attentiveness and strict adherence to the instructions. First you need to check the current battery capacity and its level at a hundred percent charge. Surface information can be obtained as follows:
- Insert the charger and wait for the charging to finish;
- Disconnect the laptop from the network;
- Check the battery level in the power settings.
In the event that immediately after disconnection charging block out of the socket percentage is less than 100, then you need to calibrate the battery.
The Windows OS toolkit also suggests the possibility of obtaining more detailed information. The command line will help you find it out, which opens by typing the “CMD” command in the search, you need to run it as an administrator by clicking right click mouse and selecting this option. Then type in the value powercfg.exe -energy -output d:\report.html, where D is the name local disk, which in your case may be different (C, E, and so on). This is where the report file with the name report and the .HTML extension will be saved. Open it with any browser and scroll to the "Battery Information" tab, then compare the last full charge and estimated capacity. If the first is much less than the second, then without fail calibrate the battery.
Operating windows tools give only information about the state of the battery, and you need to carry out the calibration procedure in manual mode, or using a specially designed software. First, it is better to try to do everything yourself and if there is no result, resort to software. Manual calibration is carried out in several steps:
- Full battery charge;
- Turn off the power supply and discharge to 0;
- Network connection.
Here it is very important to correctly set the power supply mode, because by default the system selects “Balanced”. In the above procedure, it is recommended to set "High performance" in the settings, as this turns off various energy-saving technologies and increases the likelihood of a successful calibration. In addition, when the battery level is low, the laptop will go into sleep or hibernation mode and will not allow the battery to “land” to zero.
A laptop battery calibration program can play a very important role and help you to cope with this task in the most effective way. In addition, when using the software, the whole process is carried out in automatic mode and the user does not need to change any configuration. However, it must be borne in mind that various programs are used for each laptop model.
Battery calibration Asus laptop in most cases, it is carried out in the BIOS, since this manufacturer often integrates the necessary application in the form of a technological tool motherboard. Most often, this possibility is present in Phoenix BIOS, but you can check it yourself:
- Disconnect the power adapter from the laptop;
- Reboot or turn on the device, and then press F2 (sometimes another F-ka);
- Go to the BOOT tab and find the Smart Battery Calibration menu, start the process.
Note: It is recommended to search for this item in all BIOS sections, and its name may also differ, but it always contains the word Battery. If there is no item, then it is better to calibrate manually according to the scheme described in the previous section of the article.
For laptops from manufacturers such as Samsung and Acer, there are great program for calibration called . Its peculiarity lies in the possibility of faster discharge-charge cycles, due to the fact that it automatically starts the process of searching for the Pi Number, while giving the maximum load on the central processor. In general, its main purpose is to test and diagnose the state of the battery both in idle mode and in peak loads. With it, you can perform several cycles in one hour by choosing the accelerated method and high performance in the laptop settings.
The well-known manufacturer Lenovo has released a profile utility called . It is quite multifunctional regarding battery calibration, provides the user with comprehensive information and tools for correctly configuring the battery. Before starting the procedure, connect the power supply, close running applications and background processes, and do not use the gadget during the action.
is a very useful official software for Hewlett-Packard laptops. A large arsenal of tools makes it possible not only to calibrate the battery, but also provides a variety of functionality for diagnosing the general condition of the device. In the "My Computer" section, you will find a battery check item and after the test, the program will notify you of the most preferred actions.
Every experienced user of portable gadgets already knows and adheres to generally accepted advice on how to avoid or, at least, delay the battery life as much as possible. First of all, don't use it. This is by no means a joke, because when you are working on the device and there is an outlet nearby, you need to pull out the battery and plug the power adapter into the connector, so when you really need battery life, you will have much more time. This is due to the fact that any battery has a given number of cycles and energy intensity, which in any case is lost during natural operation.
Further, if you do not use the battery, then it is best to leave it at 60-70 percent. Surely you have never paid attention, but a new gadget, be it a smartphone or a laptop, always shows exactly this level of charge the first time you turn it on. Li-ion batteries do not like recharge and complete exhaustion. And lastly, always try to comply with the recommended operating conditions, that is, do not allow the gadget to overheat, do not use the laptop in rooms with high level humidity or low temperatures. In general, in the instructions, all these tips are presented in an understandable and accessible language.
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The laptop is considered by many owners as portable device, which, if necessary, you can take with you on a trip, to the country or just to work in a cafe. In such situations, it is important that the computer can work offline as long as possible - without connecting to the network.
Why calibrate a laptop battery
Laptop batteries have a certain level of charge, which cannot be exceeded due to the chemical processes occurring in the device. Due to incorrect operation of the controller battery, which is a consequence of connecting a laptop to a power source at different charge levels, maximum capacity battery may decrease.
Example: The actual battery charge may be at 90% and the controller will detect it as 50%. When the charge drops to 5-10% according to the controller, the laptop will go into sleep mode. In this case, the actual level of battery capacity will be at the level of 45-50%, but the owner of the computer will not be able to use the remaining energy.
To avoid situations in which the controller incorrectly determines the level of charge of the laptop battery, it is necessary to calibrate the battery from time to time. Its meaning is to "remind" the battery controller of which charge level is the maximum and which is the minimum.
When to calibrate a laptop battery
There are recommendations from battery manufacturers that calibration should be done every 2-3 months, depending on the intensity of work at the computer. However, it is easier to determine the need for battery calibration by checking its parameters by a specific point in time. To find out if a battery needs calibration, do the following:
It is worth noting that calibrating the battery in any case will not make the indicators of full charge and rated capacity identical. This is due to the chemical processes occurring in the battery, which do not allow the battery to be restored to its original state.
How to calibrate laptop battery automatically
Before proceeding with the calibration of the laptop battery, it should be said that this procedure will take several hours. Do not use a laptop during automatic calibration of the battery pack.
Almost every laptop manufacturer installs various software on their devices. Among them, most often, there is a utility that is responsible for battery operation. Through it, you can find out about the status of the battery, adjust the power settings, and, among other things, calibrate. Below we will consider the battery calibration option using the example of the Energy Management application that comes with Lenovo laptops, but the principle of operation of such programs is identical.
To calibrate the battery Lenovo laptop through the Energy Management application, you must:
The calibration process assumes that the laptop is charged to 100%, and then discharged to 0%. During calibration in automatic mode, do not use the computer and do not close the lid of the laptop, since the screen is the main consumer when the battery is low.
Note: If you can't find a native battery calibration app on your laptop, you can use third-party solutions. There are dozens free utilities with similar functionality, for example: Battery Eater or BatteryCare.
It is worth noting that some laptop manufacturers do not install a separate application for diagnosing and calibrating the battery, but integrate this functionality into the BIOS. For example, HP does this by embedding a battery calibration utility into the Phoenix BIOS. It's called Smart Battery Calibration and can be found under the Boot tab.
In other BIOS versions and on other computer models, the location of the utility may differ. Before flattering the BIOS to use the battery calibration feature, it is recommended that you read the information on the computer manufacturer's website and make sure that such functionality is provided.
How to manually calibrate a laptop battery
Since the calibration procedure involves a complete charge-discharge of the battery and no more manipulations, it can be performed without third party applications in manual mode. To do this, you must first change Windows settings, because the laptop computers when the battery charge drops to critically low values, they go into sleep mode, and this will prevent the battery from being completely discharged. To calibrate the battery in a laptop, set the power supply of the device as follows:
After that, the newly created power plan will be automatically applied. Next, you need to fully charge the laptop battery and pull out the power adapter. After that, you need to wait until the computer is completely discharged, while you can use it, but do not forget to save your work, because the laptop can turn off at any time. When the computer battery is completely discharged, you need to charge it again to 100%, after which you can switch the computer to standard power mode, since the calibration process will come to an end.
Laptop Battery Calibration – milestone for laptop users who monitor the status of their devices.
Due to the nature of the operation, this moment obsolete, lithium-ion batteries, they need periodic adjustment before use so that the current charge is correctly determined
When is the setup done?
The procedure is mandatory for new devices, which will give the user up-to-date information about the battery status.
From time to time, when glitches appear (indicators are determined incorrectly by the controller) or the laptop does not work on battery power for very long, it is also recommended to tune its battery.
The procedure will not eliminate physical wear and tear and defects in the structure of the batteries, but the battery life can be increased. At a certain level of charge, as a rule, by 30% the device goes into standby mode.
And if the controller shows that it has 30% left (and in reality this value is higher) and puts it into sleep mode, then the current state of the capacity will be displayed.
In newer nickel-based cells, there is a so-called “memory effect” - it sort of remembers the charge level when there is mains power and does not discharge below this value, believing that this level corresponds to a full discharge.
Determine the battery capacity of a laptop computer
Before calibrating the battery, you should make sure that the operation is necessary, especially if there are no problems in determining the amount of charge. This is done through the command line.
- We launch it with administrator privileges, for example, by entering "cmd" in the "Run" window (Win + R) or through the search in Windows 10.
- We execute the code “powercfg.exe -energy –output disk:\path\file_name.html” in it.
- We are waiting for the completion of the operation (marked by the closing of the window).
- We go to the specified directory and open the report created in html format.
To do this, you need a browser, and the functionality of IE or Edge built into the top ten is enough.
- We look through the report and find the capacity calculated by the controller and its value after the last full charge.
Calibration is carried out when the peak capacity of the battery is tens or more percent higher than the real one obtained as a result of its last charge.
Battery tuning techniques
There are two ways to make the controller work correctly:
- manually - more reliable and fast way;
- in automatic mode - via BIOS or special programs.
Manual setting
Done in three simple steps and does not require third-party software.
1. Charge up to the maximum value of 100%.
2. Disconnect the cable from the network and wait until its charge drops to zero.
3. Connect again (as soon as possible) and charge to the maximum.
It seems simple, but there is one caveat: when it drops to a certain level (about 30%), the laptop goes into sleep mode, and therefore it will not work to achieve the desired effect in this way.
The following chain of actions will help to avoid such a situation (relevant for any Windows):
- Call the Power applet.
This is done through the search in Windows 10 or the control panel when visualizing its elements in the form of large icons.
- Click "Create a power plan" in the menu on the left.
Here you can both edit the current plan and create a new one. Let's go the second way, so as not to distort standard settings standard plans.
- Create new scheme power supply, set its name and set it to high performance.
Introduction of the name and plan of the scheme
- We open Extra options power supply.
- We prohibit turning off the display and sending the laptop to sleep.
After the scheme will be automatically activated.
If it suits you, after charging and disconnecting from the network, you can restart and wait for the device to turn off by entering the BIOS menu, but you will have to wait longer, because the processor load in this case is minimal.
Automatic setting
Many developers ship their laptops with power management utilities. Lenovo, for example, comes with the Energy Management utility.
Run the software and click on the gear icon to start the process.
Click "Start", closing all third-party programs.
Connect the power cord to the network, if it is not connected, and click "Continue".
The battery will be charged, discharged to zero, and charged again. It is not necessary to remove and connect the cable, and it is strictly not recommended to interrupt the process, as well as use the device. Only then is success guaranteed.
BIOS
Those laptops that use the Phoenix BIOS I / O system have an integrated function for verification and calibration.
1. If there is such a BIOS, we enter it using F2, Esc or Del while restarting the PC.
2. Go to the "Boot" tab.
3. We call the item "Smart Battery Calibration"
4. We confirm the start of the process by clicking "Yes".
5. At the end of the operation, exit the BIOS.
Advice! It is important that the battery is fully charged during the calibration process, and the laptop is unplugged, otherwise an error will be displayed.
Third party software
If there is no desire / ability to do manipulations in the BIOS / UEFI, download applications like Battery Care or Battery Eater or Battery Mark if standard software is not expected to solve the problem.
The last program, after charging, loads the CPU with the task of calculating the never-ending value of Pi.
The utility will additionally allow you to conduct a comprehensive testing of the battery both at peak loads on the hardware, and in case of its downtime.
A special algorithm will allow you to perform a couple of discharge-charge cycles for about an hour (the time depends on the capacity and degree of wear).
Hewlett-Packard ships laptops with HP Support Assistant.
The "My Computer" subsection contains tools for testing and debugging a portable PC.
Proper operation
To extend battery life, follow these tips:
- End unnecessary tasks and processes, each of which consumes a battery.
- Reduce the display brightness level to the lowest possible without affecting the operation of the device.
- Keep an eye on the list of launches together in Windows software security.
- Do not overheat it above the specified temperature limit.
- Remove the battery when not in use for a long time.
- Try not to use in the cold.
- Bring the battery to full discharge as rarely as possible.
- Perform a full discharge and charge cycle a couple of times a year.
Simple rules will also extend the service life.
Modern laptops are equipped with Li-ion batteries of different capacities. Because of this, for everyone specific device the required amount of battery (battery) is calculated to maintain long battery life. Battery life is one of the reasons why users prefer laptops.
During the operation of the device, the battery loses its original capacity, charge / discharge cycles decrease, this is especially noticeable in demanding programs and games. If all requirements are met correct operation device, this problem may not occur. To maintain capacity and restore the performance of a laptop battery, calibration will come to the rescue.
When is laptop battery calibration necessary?
Battery calibration is first needed when problems are observed. fast charge consumption in undemanding applications: browser, text editors etc. In such situations, the charge may drop to 0 in a few minutes. It will also be useful when the system shows wrong percentage of charge or its level remains within one value, i.e. when connecting charger percentage does not increase.
We also recommend that you calibrate as soon as you purchase your laptop. This is necessary for initial setup power controller, otherwise after a while failures may occur: Incorrect charge display or charging process starts after a while. Also, calibration will help increase battery life.
How to determine battery capacity
To determine the battery capacity, we use standard means operating system Windows. For this method, you will need to use the command line:
powercfg.exe -energy -output c:\report.html 
Manual calibration
You can manually calibrate and pump the battery without resorting to additional software. In this case, we will use standard means operating system.
Before you start, you need to configure the power saving settings:
The manual calibration process is as follows:
- to begin with, we put the laptop on charge and charge it 100%;
- Further unloading to 0% by disconnecting it from the mains;
Important! When the laptop is discharged to 0%, you should not use it and run any programs, otherwise you will not be able to reset the controller.
- after the charge level reaches the minimum value, we again put the computer on charge and charge it up to 100%. At the same time, it is not recommended to use a PC during the process, this will disrupt the battery resuscitation process.
Important! Calibration cannot increase the capacity of the battery, it does not eliminate the physical deterioration of the battery. Thanks to this operation, the controller starts working correctly: failures are excluded, the charge level is displayed correctly, charging in progress without delay.
Calibration programs
Next, consider specialized utilities that will help you calibrate your laptop battery. It is best to use the software that the device manufacturer offers, because. they have a specification that allows you to work correctly with the battery.
Lenovo laptops have a special utility that allows you to check the status, repair the battery, and perform calibration. The utility is equipped with all laptops of the Lenovo Idea Pad series. 
Battery operation process:
- after launch, click on the icon " gears» located at the bottom of the utility window;
- then a warning about the reset will appear in a new window, click " Start» to start calibration. All must be closed first. running programs and connect the computer to the mains;
- then click " Continue»;
- the battery optimization process will begin. Needless to say, it will take a long time. The battery will be charged first, then discharged. The process cannot be interrupted, it is undesirable to use a laptop.
Smart Battery Calibration in Phoenix BIOS
This utility is built into the Phoenix BIOS on HP laptops and non-HP laptops. The Smart Battery Calibration utility allows you to check the battery status, run diagnostics and calibrate it. 
- first turn off the computer;
- then we start the laptop and on start screen press the key combination to enter the BIOS. The most common combinations are: "Delete", "Esc" and "F2". The desired login command is usually displayed on the start screen;
- when entering the BIOS for navigation, use the arrow keys and the "Enter" key to open the desired section;
- use the arrow keys to move the pointer to the tab " Boot»;
- further in the list we look for the “Smart Battery Calibration” utility and click “ Enter»;
- in the window that appears, click " Yes” and wait for completion, which may take a sufficient amount of time.
Functional utility for HP laptops. With her help you can check the status all hardware and program element computer. It also carries out the process of diagnosing the battery and calibrates it if malfunctions in the controller are detected. 
- run the program from the desktop;
- after starting the utility in the main window, select the section " My Computer»;
- then we start testing the battery " Batterytest»;
- after that, a window with the test results will be displayed. The results may be as follows:
- « Passed» - battery replacement is not required.
- « Perform calibration» - starts automatic optimization battery.
Important! Calibrating the battery using HP Support Assistant can take several hours and is recommended during periods when the computer will not be used for a long time.
A small program that will allow you to efficiently perform battery diagnostics on any laptop, including Asus, Acer or Samsung. With its help, it is possible to optimize the charge consumption, get detailed information about the state of the battery, quickly switch between power management schemes, set charge / discharge cycles, find out the battery life. After installation, the utility is placed in the system tray. BatteryCare can successfully replace the Battery Doctor or Battery Calibration utility for laptops on Windows 7/8/10. 
Instructions for working with:
- go to "Settings" and to the folder " Notifications»;
- in block " Miscellaneous event » check the checkbox "Recommend battery calibration after" and set the required charging cycle, in our case 25 cycles;
- after the recommended cycle is exhausted, the application will offer to perform an automatic calibration.
This utility will allow you to track the battery level, assess battery wear, find out the voltage, restore the battery and conduct tests. It will also allow you to find out the manufacturer of the equipment. During operation, the utility automatically generates a schedule of battery operation and charge / discharge cycles, saving it to a special folder on your hard drive. 
Important! The utility is paid, the trial version is available for 14 days. Calibration can only be performed if the program has been purchased.
Instruction:
- run the program and in the main window click on the battery icon;
- then several blocks will appear in a new window " Battery”, which displays information about the current state of the battery and “Calibration”;
- in this section, you must activate the parameter " PerformCalibration" and "Battery Calibration" to start the process. The operation will be performed automatically.
How to save battery
- for proper battery calibration is best use special utilities , which are designed for certain device models;
- if autonomous work is not expected, then it is best take out the battery from the device and work from the network. In this case, the battery must be at least half charged to prevent it from going into a deep discharge state. But you should not constantly use the power grid, you must use the battery at least once every 5 days;
- to prolong battery life, it is recommended to connect to the network when the charge level reaches 15-20%;
- frequent calibration can harm The battery simply used up extra charge / discharge cycles. It is important to know that cycles are limited and cannot be restored;
- if the battery wear is more than 65%, then optimization is recommended to be carried out once a month. This will help to slightly extend the service life;
- in order to save the laptop battery it is necessary to control the temperature value. The optimum temperature is from +5 to +45, values higher may adversely affect the device.
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