How to check laptop battery life and find out why its bottle speed happens so fast

Test laptop battery life on devices ranging from Windows laptops to Macbook devices. Find out now GhienCong’s article below.

Batteries aren’t meant to last forever, and that includes the batteries that power your laptop. As with any other battery, your laptop battery has a life cycle, which will end at some point. And you can Check laptop battery level easily in the post of GhienCongListen The following.

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Why does the laptop battery quickly degrade?

Most laptops use a lithium-ion battery as a power source, and as a general rule, this type of battery tends to lose its ability to charge. This can cause your laptop battery, which is already 100% charged, to be limited to more than 30% over time.

This can obviously affect your productivity and also the efficiency of your laptop. Laptops are designed to be portable, but if you can’t move it from one place to another without the battery dying, it can cause problems with how useful the device is to you. .


This happens because your laptop battery is only equipped to handle a limited number of full battery cycles or, more specifically, a charging process in which your battery goes from 0% to 100%. If you regularly cause your laptop battery to go through full charge cycles, it will gradually lose its performance and age.

Your laptop battery can also lose performance if you are on partial charge. Let’s say you regularly charge your laptop from 30% to 50%, or about 20% each time you charge it. Well, do that five times and you’ll complete a battery cycle because you’ve charged your laptop a total of 100%.

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However, you can’t avoid charging your battery to cut down on the cycles you go through, which is why it’s so important to check the health of your battery. Doing so will give you a good idea of ​​how abuse your battery might be and help prompt you to make some changes to maintain battery health when you can.

But how do you check laptop battery life? Please continue to follow the article below.

Check Windows laptop battery life

The steps you take to check your battery health will depend on the type of laptop you use. Checking battery health on a Macbook is much simpler than checking battery health on a PC laptop, the process is more laborious. Let’s start with the hard one first.

Check the battery life of Windows 10 and 8 . laptops

To check the battery life of a laptop running Win 8 or later, you just need to use a simple command that is run in Windows Powershell.

1. Press the key Windows + X and choose Command Prompt (Admin). Note: for users with a newer version, Command Prompt (Admin) now Windows PowerShell (Admin).

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2. When the Command Prompt window opens, enter the command powercfg /batteryreport /output “C:battery-report.html” go to windows and run it.

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This will generate a report named battery-report.html is in your cell C. Open and scroll down to section Battery Information.

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The report will also show you the name, serial number, and chemical composition that makes up that battery.

Of course, additional information such as design capacity (THIẾT KẾ CAPACITY), fully charged capacity (FULL CHARGE CAPACITY) and the number of cycles is also listed. This information is quite important because the battery will lose capacity over time.

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If your battery is new, it will have the same design capacity and full charge capacity. However, the full charge capacity will become lower as you use the battery.

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How to check Windows 7 laptop battery

For laptop devices running Win 7, there is still a command to do this. The steps are as follows:

1. Click the button Start and type cmd in the search box.

2. Right click on cmd.exe listed at the top of the menu and click Run as administrator

3. In the window of cmd enter powercfg -energy and press Enter.

This will create a report named energy-report.html located in the Windowssystem32 folder on your C drive. Open it and scroll down to the section Battery Information.

This report will give you a lot of statistics, but the one you want to pay attention to most is Initial Design Capacity (DESIGN CAPACITY) vs Full Charge Capacity (FULL CHARGE CAPACITY). Also, the smaller the percentage difference, the better.

Check the battery life of Mac laptop

Checking Macbook battery health is surprisingly simple, especially when compared to checking battery health on PC laptops. To check the health of your battery on your Macbook:

  1. Hold down the Option key on your keyboard and click the Apple menu.
  2. Click select System Information.
  3. Click on the drop-down arrow Hardware and choose Power.

On the next screen, find the section Battery Information. It will display information from the production code, battery status to the number of charged cycles.

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How to test laptop battery with software

Battery Care laptop battery testing software

Another useful software that can help you check laptop battery health is Battery Care. The app will be in the bottom right corner, and just hovering over its icon you can see some basic battery information.

BatteryCare can also show you battery health, remaining battery life, and current battery capacity. If needed, you can also view detailed information such as battery model, design capacity, total capacity, and current capacity.

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The app also provides information such as charge and discharge rates, tension and wear. You can also view the total number of discharge cycles if needed.

The application uses an advanced algorithm that can easily detect a complete discharge cycle. BatteryCare will also notify you once a certain number of discharge cycles have been reached.

According to the developer, BatteryCare only uses 0.1% of your resources, so it won’t interfere with your system in any way. This is a stable and free battery health support app.

You can download the software through the link shared below and run it directly without going through any installation steps.

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Software to check laptop battery level BatteryBar

Another useful app that can help you monitor the health of your laptop battery is BatteryBar. This is a lightweight application so it won’t use up too much of your computer’s resources.

The tool also allows you to quickly switch to a different power scheme to preserve your battery life. BatteryBar also supports graphs, so you can easily track your battery charging or discharging.

The app can show you the current battery capacity in percent or mWh. Also, it will show you the charge rate as well as the wear percentage of the battery.

BatteryBar offers basic features related to battery health, so it may not be the most advanced tool on our list. We must mention that the app is not free and some advanced features are only available in the Pro version.

However, if you just want to use the basic features, you can try BatteryBar by downloading and installing in the link below:

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The above are all ways to help you monitor, check and plan your laptop battery properly. Checking the battery life of your laptop helps you have a better view, thereby making the decision to replace a new battery for your laptop.

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