If you are running Windows 10 or Windows 11 on a laptop or tablet, battery life is one of the most essential things you're constantly checking. There is never enough battery for a portable device, so how we manage them is important.
Checking the estimated battery life on your laptop or tablet is super simple. You simply click the battery icon in the notification area to see the percentage of battery left and the estimated time you have to work. That estimate, however, is just that, and it solely depends on what you are doing now. Even though it shows eight hours, you can still get that much time if you start gaming, for instance.
This raises the question: What is your laptop's battery life? In other words, is there an actual battery time from your real-life usage combined with charge and discharge rates? The answer is yes, although to find it is a bit tricky.
How to generate a Battery Report on Windows 10 and Windows 11
To create a report of the battery health on Windows 10 (or Windows 11), use these steps:
- Open Start.
- Search for Command Prompt, right-click the top result, and select the Run as administrator option.
- Type the following command to create a battery report on Windows 11 and press Enter: powercfg /batteryreport /output "C:\battery_report.html"
Once you complete the steps, the command will generate and save a report in the root of the primary drive.
To open and read the report, use these instructions.
- Open File Explorer.
- Click on This PC from the left navigation pane.
- Under the "Devices and drives" section, double-click the "C" drive.
- Double-click to open the "battery_report.html" file in the browser.
The system report has a few sections with self-explanatory details. The section with the most information you want is perhaps the "Installed Batteries" section because it includes a general overview of the battery installed on your device, such as name, manufacturer, serial number, chemistry, design capacity, and cycle count.
You can check the "design capacity" and "full charge capacity" to determine whether the battery needs replacement. On my device, the battery reports a capacity of 38,912mWh, and the "full charge capacity" is 38,912mWh, indicating that the battery can still hold 100 percent of the charge.
It's important to note that if the "full charge capacity" is around or less than 50 percent, then it's time to consider replacing the battery.
"Recent Usage" offers useful details on the time, state (active, suspended), power source, and remaining capacity of the battery. In short, this is the record of when the laptop went to sleep, became active, and charged with AC power and the mWh capacity. If your device is waking when it should not, you should see it here. There is also a nifty "Battery Usage" graph below this area.
Other areas like "Usage history" and "Battery capacity" history are good for checking for battery health. It's known that Li-On batteries deteriorate over time, and this is where you can see that happen.
"Battery life estimates" is probably the most interesting section for most users since you can see what the operating system predicts for the battery life with regular usage. This feedback is usually more stable and accurate than the live estimate found by clicking the battery icon.
The more information this tool can collect, the more accurate the report. If you are using a new installation of Windows 11 (or 10), it's best to power cycles and wait a few days to generate the Battery Report to have enough data for it to be valuable.
For more helpful articles, coverage, and answers to common questions about Windows 10 and Windows 11, visit the following resources:
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Daniel Rubino is the Editor-in-chief of Windows Central. He is also the head reviewer, podcast co-host, and analyst. He has been covering Microsoft since 2007, when this site was called WMExperts (and later Windows Phone Central). His interests include Windows, laptops, next-gen computing, and watches. He has been reviewing laptops since 2015 and is particularly fond of 2-in-1 convertibles, ARM processors, new form factors, and thin-and-light PCs. Before all this tech stuff, he worked on a Ph.D. in linguistics, watched people sleep (for medical purposes!), and ran the projectors at movie theaters because it was fun.
There are two easier and nicer ways of showing current maximum battery capacity. Note this is "capacity" as in the maximum charge the battery can hold now, compared to when it was new.Reply
On Windows 10, you can install the Microsoft PC Health Check app from the Microsoft Store. I don't think this works on 11 and I've had a few laptops that it doesn't show the remaining capacity for some reason.
A better option for all platforms is Libre Hardware Monitor: