Last Updated on January 1, 2022 by Daniel
What to know how to check laptop battery health in Windows 10? Let’s find out.
Windows 10 has a built-in battery health checker, but what does that really mean? What information does it provide? How do you interpret the information it provides? How does it work? We take a look at the basics of battery health checks in Windows 10.
When you look at your battery life in Windows 10, the info that it provides can be a bit confusing. This is because Microsoft has provided three different battery health checks:
- A battery health check from Windows 10
- The battery health check that comes with the Windows 10 Mobile operating system
- The battery health check that comes with the Windows 10 desktop operating system
While these are all very different, they all give you very similar information. And that information is confusing.
What do all of these battery health checks mean? And what is the difference between them? How can you tell if your laptop battery is getting bad? How can you tell if your battery is really dying? And what exactly does the health check tell you?
These are some of the questions that we will attempt to answer in this article. Let’s start with the basics.
How to check laptop battery health: Run Battery Report
If you know where to look, you can find the Battery Report tool hidden just beneath the surface of Windows 10. You can do it with the Windows command prompt – here’s how:
- Click the Start button (or press the Windows key on your keyboard) to open the Command Prompt.
Simply type “Command Prompt” into the search box – it should appear near the top of your search results pretty quickly.
Alternatively, you can scroll down the Start Menu app list and find Command Prompt under the Windows System section. Double-click to launch Command Prompt.
- If you have the Command Prompt open, you should see a black window with white text spelling out a command line – likely beginning with C: and ending with your Windows user name.
Enter powercfg /batteryreport (make sure there is a space between the two terms) and press Enter.
- The Command Prompt should display a message indicating that a battery report has been saved to your user folder if all went well. Congratulations!
- Next, you need to locate and read the report. The quickest way is to open the File Explorer (in the Start Menu search box, type “File Explorer”) and navigate to the folder that the Command Prompt indicated was where your battery report was saved.
This folder is created by default by your user account (C:/Users/[yourusernamehere]/), but if you don’t find it there, you can also try searching on your hard drive. Simply type the battery report in the Start Menu to start a search.
It may take a few minutes for Windows to register new files and index them for search purposes. If it does not appear right away, try again later.
- Take a look at the battery report! Since it will be saved as an HTML file, Windows should automatically open it with a web browser.
Typically, the report should consist of a list of information, such as battery life estimates and battery usage reports.
You should be able to diagnose your laptop’s battery health once you have a copy of your Windows laptop’s battery report.
How to check laptop battery health: What to check
For the best idea of how long your laptop’s battery should last, skim down to the Battery life estimates section of the battery report you just created. You will find an estimate of how long your battery should last based on how you have used it in the past.
Considering these are auto-generated estimates, you might see some strange math or confusing figures as you scroll down the list, especially if you’ve used the laptop erratically recently or if it’s been sitting idle for a while.
Taking note of the numbers under the Active heading is important because they are estimates of how long your battery would have lasted based on the amount of time you spent on your laptop. These are formatted in hours, minutes, and seconds.
The Active battery life estimates are separated into two columns: At Full Charge and At Design Capacity. This is important because it estimates the difference between the battery capacity of your laptop now and what it was when it was brand new.
When your laptop’s battery is fully charged, the active time is an estimation of how long the battery can last, whereas when it was fresh from the factory, the active time is an estimation of how long the battery can last.
The battery report also contains some useful information about the battery’s capacity history. It is located halfway through the report and provides a dated comparison of Full charge capacity to Design capacity.
Full charge capacity is the amount of power the battery actually holds. The design capacity is the amount of power it was designed to hold. Thus, as your laptop’s battery ages and loses the ability to hold a charge, you will see Full charge capacity diminish in comparison to Design capacity. If your laptop’s full charge capacity consistently drops by 25%-50% below its design capacity, it’s probably time to replace it.
How to check laptop battery health: Test the battery yourself
You can test the laptop battery yourself and use Battery Report to measure the results if the Battery life estimates don’t give you an accurate picture. The steps are as follows:
- Look at the Battery usage section of a Battery Report (as described above): does it show a graph of how the battery has been used over the last few days?
The battery can be tested by charging it up to full capacity and then letting it drain straight down to zero without letting it hibernate or go to sleep.
First of all, turn off as many of your laptop’s automated power-saving features as possible. The most important thing to do is disable the sleep and hibernation features, which can be found in the Power & sleep section of the System Settings. You can find it by typing “Power” in the Start Menu.
- Plan how you’re going to use the laptop continuously until it shuts down. It’s best to use the laptop as you normally would all day until the battery runs out, but this won’t always be possible – especially if your laptop still lasts 8+ hours on a single charge. As an alternative, you can mute the laptop and set it to play a 24-hour YouTube video, or launch a game and leave it running all day.
- Let the laptop run until it shuts off by itself, and then charge it up to full power and disconnect it from the charger. Run your test, and then let the laptop run until it shuts off on its own. Now that you have disconnected it from power, connect it again, let it recharge until you are able to turn it back on, then produce another battery report using the same procedures outlined above. A new entry should appear in the Battery usage section showing how long the laptop lasted on a full charge (under whatever load you gave it).
People also ask
At what percentage should I charge my laptop?
Keeping the battery level between 40 percent and 80 percent is the best thing you can do. Check your laptop’s cooling fan and make sure it doesn’t get too hot. Excessive charging will not harm your laptop battery. Since it bypasses the charging energy, it won’t harm it.
What causes my laptop battery to drain so quickly?
Most laptop battery failures are caused by a discharged battery or a faulty battery. If your laptop’s battery is old, it will rapidly run out, so it is time to replace it. … Some laptops have very bright screens. Such a screen uses more electricity.
What drains laptop batteries the most?
The display of your laptop consumes the most battery resources every day. In particular, it is that power that is used to illuminate the pixels on your laptop’s display. If you want to extend your battery life, then the obvious move is to lower your display’s brightness.
Following these steps will provide you with an accurate estimate of how long your laptop will last on a full charge.
Performing this test on your laptop battery every few months will allow you to determine whether it is in good health or if you should try running it in different workloads (web browsing and emailing the whole day versus watching movies or playing games) ascertain which activities drain your battery fastest.