Laptop says battery is still but power off, causes and solutions

The laptop battery is still showing the battery percentage but the computer suddenly turns off. Don’t worry too much, maybe your laptop is showing the wrong battery percentage without you even knowing it. Let’s find out the cause and how to fix this situation with Tnhelearning.edu.vn!

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For computers using Windows 10 operating system, it is rare to display incorrect battery information. However, there are also many cases caused by battery hardware or Windows software failure. So, let Tnhelearning.edu.vn explain the cause and show you how to fix the error of displaying wrong battery percentage right below.

Why does the laptop display the wrong battery capacity?

Each laptop model has different battery capacity. The capacity of a laptop battery is measured in milliamp-hours ( mAH ). Simply put, the higher the mAH value, the more energy the battery stores.

In expensive laptops, the battery capacity can be used for many hours. The battery will power the computer to operate without having to be plugged in. Therefore, all activities such as watching videos, adjusting screen brightness, running application programs will lead to faster battery drain .

Does removing laptop battery increase battery life?

Whether or not the battery is removed, the total capacity of the battery will decrease over time . Each type of battery will have a specific number of charges and charge cycles. Batteries are also affected by environmental factors such as temperature, humidity, etc. Typically, after a period of 18 to 24 months , you will see a decrease in battery runtime.

Therefore, if you are watching a video, playing a game, or running a work application, the battery percentage may not be displayed correctly. This number can also change, even your laptop suddenly turns off at 30% battery display.

How to fix laptop showing wrong battery percentage

To fix the situation where the laptop shows the wrong battery percentage, you can apply the following ways:

Method 1: Customize the battery installer

If the laptop battery shows an incorrect number, then you should think first that it is tweaking the battery installer. This is where you can monitor the battery from full to empty state, and in the charging status.

This method does not make the laptop battery have more power, or prolong the battery life, but only helps you to read the exact percentage of the battery displayed.

Adjust battery power efficiency

You can take 5 steps to adjust battery power performance as follows:

Step 1 : Right-click the battery icon on the taskbar, click Power Options.

Select Change when the computer sleeps in the left position.

Step 2 : You should note that the current settings will have to be calibrated again. Change the Never state in the dropdown menu item and click Save changes .

Step 3 : Use your mouse to click Change advanced power settings .

Go to Battery -> Critical battery level . Pay attention to the current percentage. Click On battery , set it as low as possible.

Step 4 : Select Critical battery action , and make sure On battery is set to Hibernate mode. If not in that state, change.

Step 5 : Click OK to save the changes, done.

Method 2: Plug in the computer battery charger

Plug in your laptop charger until the battery shows 100% . During the charging process , you can still use the computer.

After the battery has shown 100% , now stop using the computer and wait a few hours before using it again. This way, you can determine if the battery percentage display is correct, as well as keep the battery stable.

Method 3: Use up the battery and plug it back in

Please use up the laptop battery without plugging in the charger, wait for the machine to turn itself off, rest for a few hours, this will help the battery cool down.

After that, plug in the battery charger , you can still use the laptop during the charging process. When the battery shows 100% , you need to turn off the device, after a few hours to use it again , to help stabilize the battery as well as fix the status of displaying the correct battery percentage.

Method 4: Reinstall the battery driver

Your laptop’s battery driver may be missing or damaged , resulting in incorrect battery percentage display. So let’s reinstall the battery driver by following these steps:

Step 1 : Press Windows key + X , click on Device Manager -> Batteries , you will see Microsoft AC Adapter and ACPI-Compliant Control Method Battery .

Step 2 : Right click on Microsoft ACPI-Compliant Control Method Battery , uninstall Uninstal , and wait for the process to complete.

Step 3 : Once done, look at the top, select Action – > Scan for hardware changes , will proceed to reinstall the driver. Please restart the computer to complete the installation.

Method 5: Update the operating system

You should always keep your operating system up to date to protect your system and benefit from its latest features.

Displaying battery percentage can have a small 1% difference, when you move the mouse over the battery icon on the taskbar compared to when you click it.

To make sure your computer is running the latest version of Windows operating system, press Windows key + I to open Settings, click Update & Security and click Check for updates. Japan). Any updates will automatically download and install on your computer.

With the above methods, hopefully, it will help you to fix as well as know the cause of the laptop battery showing incorrect percentage. If you have any questions, you can leave a message below for Tnhelearning.edu.vn to support you!