Checking the wear of the laptop battery. How to find out the wear of a laptop battery

The program works in two modes: accelerated and normal. In the default accelerated mode, the program starts the Pi calculation process to load the processor at full capacity and measures the time it takes for the battery percentage to decrease by one. Multiply by 100 and get the total operating time of the laptop on the battery. In full mode, the program measures the operating time of the laptop “in idle mode” and when fully loaded, but unlike the accelerated mode, the estimate is averaged over 3 periods of battery charge drop. Battery testing time in both modes depends solely on the operating condition of your battery, and in normal mode can be 2 times longer than the time taken in accelerated mode.
You can see the most complete picture of your battery only on the discharge graph from 100% to 0%. Examples of such graphs for various laptops and batteries are posted on the website in the graphics section.

The program is designed to calculate the operating time of a laptop in offline mode under increased load on various system components.

BatteryEater tries to load all the laptop subsystems as much as possible to obtain the minimum time. After all, it never hurts to know how a laptop battery will behave in a critical situation. There are three possible test options in the program: classic, reader and idle mode, which, taking into account additional parameters, allow you to get some averaged results that are relevant only to you.

- an intelligent program for monitoring the level of discharge of laptop batteries with minimal consumption of system resources.

The program uses the most accurate algorithm to date for calculating the remaining battery life of a computer by collecting and analyzing battery usage statistics. The more you work on a computer with the program installed, the more accurate its readings will be. An unobtrusive small panel for a quick glance has a color scale corresponding to the current position of the battery status and an accurate countdown timer for the remaining operating time of the computer (the desired threshold is set independently), after which the program will notify you that you are winding down and turn off the computer. Accordingly, you can install this panel in any area of ​​the screen, at the bottom or always at the top of applications.

The main advantage of a laptop is that it can be used even without a stationary power supply. The battery is responsible for the autonomous functioning of the PC. A serviceable and fully charged battery can keep your laptop running for more than 5 hours. If you notice that the battery life of your laptop is greatly underestimated, it would be a good idea to test the battery and determine the degree of its wear. The power supply may need to be replaced soon.

How to test a laptop battery at home

The operating instructions for a laptop battery suggest charging it only after it has been completely discharged. Regular violation of this rule over time leads to a decrease in the actual capacity of the battery, as a result of which it runs out faster.

To check the capacity of the power element, the number of remaining charge/discharge cycles and some other parameters, you can connect a special device to it - a portable tester for PC. However, this device is characterized by one significant drawback - its high cost (more than 30 thousand rubles), so it can only be found in computer workshops.

Testing a battery at home involves the use of software diagnostic methods, namely:

• command line;
• additional software.

Determining the degree of battery wear via the command line

To view the current state (charge) of the power supply and the remaining battery life of the laptop, just click on the corresponding icon in the system tray.

However, the data obtained does not allow us to determine the actual battery capacity. The operating system Windows 7 and higher has a built-in tool for checking the degree of battery wear, which is launched via the command line. To do a battery test using it, you need to:

The file will contain information about the battery manufacturer, its chemical composition, serial number, etc. This data does not provide useful information to you. It is necessary to pay attention to the last two lines: the calculated and actual battery capacity.

The calculated battery capacity (Snach) is the initial state of the battery, that is, the capacity that the power element has after manufacturing.

Last Full Charge (Sreal) is the current capacity of the battery. Using these parameters, you can calculate the degree of battery wear on your laptop. To do this, you need to use the formula: (Snach-Sreal)/Snach. For example, if the factory capacity of the battery is 40,000, and the actual capacity is 30,000, then the degree of wear will be equal to: (40,000-30,000)/40,000 = 0.25 or 25%. The condition of such a battery can be considered normal.

Testing a laptop battery using additional software

If for some reason you were unable to check the battery’s performance using the command line, you can use special software. There are many programs on the Internet that allow you to test your laptop battery. The most popular application is AIDA 64.

Battery testing using AIDA 64 is performed as follows:

After testing the laptop battery, you can draw conclusions about its suitability - will it continue to be used as an autonomous power source or is it better to replace it with a new one.

Good afternoon, regular readers and blog subscribers! The main advantage of a laptop over a system unit is its autonomy. Operation without connecting the device to the electrical network is possible through the use of a battery. Modern laptops have a very wide range of battery life - from 3 to 12-13 hours. Over time, many users are faced with the fact that the laptop discharges faster and a reasonable question arises: is the problem in the battery or is it being affected by something external. To find the answer you need to know how to check a laptop battery, and I will tell you how to do this in three ways.

Special equipment

A multimeter is a device that measures current. The battery in a laptop is a plastic case inside which there are rechargeable batteries, each of them has a recharge cycle and as it wears out, the current strength becomes less. To check with a multimeter you will need to disassemble the battery. This can be done using a thin knife, inserting it into the longitudinal seam and pushing the lids apart. The tester must be switched to constant current and sequentially check the voltage in the circuit. It should be equal to the product of the battery cells by 3.7. Example: 8 batteries * 3.7 = 29.6. If the value is less, then the battery's battery life affects the battery's battery life.

Firmware

Of course, using a multimeter allows you to quickly and accurately assess the degree of battery wear, but if you don’t have one at hand or you are afraid of damaging the battery during disassembly, it is better to turn to software for help. An option for the lazy (no need to download and install anything) is a proprietary utility, which is available in all versions of Windows, starting from 7.

In the “Start” menu, find the “Run” line and enter cmd. Using this combination, a command line will be found, which must be opened as an administrator. Next, enter another command: “powercfg energy”. After its activation, the battery status is assessed in Windows 10 and earlier versions. It lasts no more than 60 seconds, and the result is saved to a file, a link to which will appear in the command line after the test is completed. Typically this is the root directory on the system drive. If the file does not open, you should copy it to your desktop.

The file contains a lot of useful information, however, the most interesting is written in two lines at the bottom - calculated capacity (that is, factory) and nominal (actual at the time of testing). Obviously, the test must be carried out only after the laptop is fully charged. If the values ​​coincide, then the battery keeps its charge at the same level and its rapid discharge is a consequence of third-party influences.

Useful programs

Using the proprietary Windows program is very convenient and fast, but to get more details you will need to install separate programs.

The best of them are:

• battery care;
• aida64;
• battery eater;
• imtec battery mark;
• battery optimezer.

Each of these utilities has its own advantages, so it’s quite difficult to single out one.

Battery care is free software. Advantages: it is constantly updated by its creators, has a high accuracy of battery performance assessment, provides extended information about the battery, and does not require many resources.

AIDA 64 is a useful application that allows you to conduct a comprehensive analysis of the operation of your laptop or PC. This displays information not only about the hardware, but also the system itself, as well as the BIOS status. The utility is paid, but there is a 30-day trial version. (The one I'm giving away is a perpetual license).

Battery eater - this utility is designed to test the battery life of a laptop under different loads. There are three versions of the test - simple, reading and classic. In each mode, the laptop is loaded differently, which gives a real and accurate assessment of its autonomy under critical loads.

Imtec battery mark - the utility is similar to the previous one and also calculates operating time under different loads. The advantage is the stability of operation on older laptop models, especially important for HP and Asus (which have the most durable batteries), and also allows you to understand how the battery will behave when the voltage changes. Testing takes about 10 minutes, it is not recommended to run anything else during this time, otherwise the assessment may not be accurate. Data is provided in graphical and text form. It is recommended to carry out such a test at some intervals in order to have an idea of ​​battery wear.

Battery Optimizer is a great app for evaluating and tuning your laptop. With its help, you can simulate different situations for the operation of the device and select settings with the best option for autonomy and respect for the battery. These settings can be saved as a template and included as needed. An important advantage is the ease of use of the utility; even an inexperienced user can understand it.

In order to get a real picture of the battery condition, it is recommended to install several of the programs suggested above and compare the results. If it converges in several tests, then the accuracy of the data obtained leaves no doubt. I advise users who have recently become owners of a laptop to familiarize themselves with the recommendations for using the battery and install at least one program for carrying out tests. This will prevent you from encountering an unpleasant surprise in the future - battery failure.

Conclusion

Modern batteries have a service life of 2 years, but in reality they work without problems for 3-4 years. The average number of charging cycles is 400-500. This figure seems very impressive, but in fact, wear occurs quickly if you do not treat the device with care. I do not recommend replacing a damaged battery with a Chinese version, so to save money, time and effort, take care to extend the service life from the date of purchase and then the battery will have to be replaced with the laptop itself.

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Thank you for your attention! Sincerely, Rostislav Kuzmin.

The capacity of any battery decreases as it is used. The more times a battery is recharged, the less energy it can ultimately hold.

Therefore, before purchasing a new device, you should always look not only at the original capacity (Design capacity) declared by the manufacturer, but also at its current value (Total capacity or Full charge capacity). The greater the difference between them, the greater the wear on the battery and the more often it will have to be charged.

The tools listed below will allow you to quickly test your battery. To prepare the device for testing, it is enough to fully charge it.

How to check the battery of a Windows laptop

Windows has a built-in battery diagnostic tool. To enable it, first type “Command Prompt” in the system search, right-click on the found utility and run it as administrator. Then enter the command powercfg /batteryreport in the window that appears and press Enter.

After a few seconds, Windows will save the battery status report in a folder at C:\Windows\system32. Find a file in it called battery-report.html and open it using any browser. Then scroll to the Installed batteries section - here you should see the Design capacity and Full charge capacity values.

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If the report does not contain the information you need, you can view it using free third-party programs like BatteryInfoView and BatteryCare. The first one shows Design capacity and Full charge capacity right in the start menu, in the second one just click Detailed Information.

One of the easiest ways to find out your MacBook's battery status is with the free coconutBattery utility. All data necessary for the test, including Design capacity and Full charge capacity, is displayed immediately after it is launched. Plus, the program can show similar information for iOS devices connected to the computer.

If for some reason you don’t like coconutBattery, try one of the alternatives.

All the necessary information can be viewed in the free AccuBattery application. The Design capacity indicators (displayed in Russian as “Design capacity”) and Full charge capacity (“Calculated capacity”) are available on the “Charging” and “Health” tabs.

I was unable to find another program on Google Play that displays similar data. Other popular apps in this category only show approximate battery health in the form of a bad/average/good rating. Among them are “Battery” and Battery Life.

Over time, any laptop or smartphone, due to constant use from the built-in battery, its capacity begins to decrease. It is especially unpleasant when a fully charged battery runs out after just an hour of use. CHIP will tell you how to find out how worn out your mobile device's battery is and whether it's time to replace it.

You can get information about the status of your laptop's battery using both built-in Windows tools and third-party free utilities. First, let's try to do without extraneous tools.

Battery information via command line

Disconnect the laptop from the power supply. In the “Start” menu, type “cmd” and right-click on the search result that appears, select “Run as administrator” from the context menu.

Battery information will be provided by Battery Care

A small free utility called Battery Care will help you get almost complete information about your laptop battery. The program hardly loads the system and displays data in a visual form.

Click on the program icon in the tray and click on the “Advanced” tab. Here you will find detailed information about the battery. In particular, the program will show the name of the battery, declared capacity, current condition, wear, etc.

The program is completely free and is regularly updated by the developers.

iPhone, iPad and Mac OS Battery Health

To check your iPhone or iPad battery, until now you had to contact the Genius Bar staff. The free coconutBattery tool for Mac OS will help you do this much faster and without unnecessary problems. The utility has already proven itself as an excellent tool for checking the condition of the battery, as well as its recharge cycles. Currently coconutBattery supports iOS devices.

iPhone battery check. The coconutBattery tool displays a lot of useful information about your iPhone battery

With this tool, you will receive detailed information not only about the condition of the battery, but also about the current charge level, maximum capacity, as well as recharge cycles already completed. Thanks to this, you can quickly identify the essence of common battery problems, such as too fast discharge.