How to Check Laptop Battery Health on Windows 11 (Free)

Last updated: October 6, 2026. Steps checked against Microsoft’s Windows and Surface support pages and Dell, HP, Lenovo, ASUS and Apple documentation.

Laptop batteries wear out slowly, so it’s easy to miss until the laptop dies at 30%. The good news is that you don’t need to buy an app to see how worn yours is. Here’s how to check laptop battery health on Windows 11 for free, how to read the numbers, and what to do with them.

How to check laptop battery health on Windows 11

Run powercfg /batteryreport in an administrator Command Prompt, then open the report it creates. These are the steps from Microsoft’s battery care page:

1. Select Start, type Command Prompt, right-click it and choose Run as administrator. Select Yes.
2. Type powercfg /batteryreport and press Enter.
3. Windows prints where it saved the file, usually C:\Users\YourName\battery-report.html (or C:\Windows\System32 if you started in that folder).
4. Open that file in any browser.

Want it somewhere easier to find? Microsoft’s powercfg documentation lists an /output option, for example powercfg /batteryreport /output "C:\battery-report.html", plus /duration to set how many days of history to analyze.

As of October 2026, Windows 11 Settings shows battery level and usage, but not a health or capacity percentage. The battery report is the built-in way to see wear.

How to read the battery report: design vs full charge capacity

Battery health is Full Charge Capacity divided by Design Capacity. Look at the Installed batteries section near the top:

Dell’s battery guide defines design capacity as “the maximum amount of charge that a new battery can store” and full charge capacity as “the actual amount of charge the battery can hold at its current state.”

Example: Design capacity 56,000 mWh, full charge capacity 47,600 mWh. 47,600 ÷ 56,000 = 0.85, so health is 85%.

Further down, Battery capacity history shows how full charge capacity has changed over time, and Battery life estimates compares runtime at full charge with runtime at design capacity. Those two sections are the clearest picture of how much runtime you’ve lost.

Check battery health with CMD or PowerShell

The same powercfg command works in both. In PowerShell (run as administrator) you can save the report straight to your desktop:

powercfg /batteryreport /output "$env:USERPROFILE\Desktop\battery-report.html"

If you’d rather see the two numbers without opening a report, most laptops expose them through Windows Management Instrumentation:

$design = (Get-CimInstance -Namespace root\wmi -ClassName BatteryStaticData).DesignedCapacity
$full = (Get-CimInstance -Namespace root\wmi -ClassName BatteryFullChargedCapacity).FullChargedCapacity
[math]::Round($full / $design * 100, 1)

Some firmware doesn’t fill in these classes. If you get an error or a blank, use the battery report.

Is 80% laptop battery health good?

80% is normal wear for a laptop that’s a few years old, not a sign it’s failing. There’s no single industry cutoff, but manufacturers give useful markers:

• Apple says Mac laptop batteries are “designed to retain up to 80% of its original charge capacity at its maximum cycle count,” which is 1,000 cycles for recent MacBooks. That’s a reasonable yardstick for Windows laptops too.
• Dell suggests considering a replacement when its tools show health as “Fair” or “Poor,” when runtime drops below 50% of original capacity, or after two to three years of heavy use. It also says most users notice shorter runtime after 18 to 24 months.
• ASUS says it doesn’t decide battery replacement from cycle count alone, but from an overall health and safety evaluation.

A rough guide: above 90% is excellent, 80–90% is normal aging, and below 70% you’ll likely notice the shorter runtime. Whatever the number, stop using a battery that’s swelling. Microsoft and Dell both say so.

HP, Dell and Lenovo battery health tools

Each big brand has a free app or a BIOS screen that shows health and adds charge limits.

A few details worth knowing:

• Dell health ratings run Excellent, Good, Fair, Poor and Unknown, per its guide. “Fair” means the battery is nearing the end of its usable life. In Dell Optimizer, turn off Dynamic Charge Policy to pick a charging mode.
• HP’s Battery Health Manager, on the F10 BIOS Advanced > Power Management Options menu, has three settings. “Maximize my battery health” charges to around 80% and stops, according to HP’s developer portal.
• Lenovo’s conservation mode keeps the charge between 75% and 80%, per Lenovo’s user guide.
• ASUS Balanced mode stops at 80% and resumes below 78%; Maximum Lifespan mode stops at 60% and resumes below 58%, per ASUS support.

Is there a free battery health app for Windows 11?

Yes: start with your laptop maker’s app, because it reads the battery’s own health data. The tools above are free and preinstalled on most laptops from those brands, or downloadable from their support sites. For a quick cross-brand check, the built-in battery report is enough. You don’t need a paid “battery doctor” app, and many of the ones in app stores just show the same Windows numbers.

How to keep your laptop battery healthy

Avoid sitting at 100% and avoid heat. Microsoft’s guidance is to keep the battery “within a moderate charge range (roughly 20%–80%) whenever possible,” and to avoid using or charging the device at high temperatures. For storage, it recommends about 40–60% charge in a cool, dry place.

In practice:

1. Turn on a charge limit if you’re plugged in most of the day. That’s the single biggest help for desk-bound laptops. Surface devices do this automatically with smart charging, which caps the charge at 80% when the laptop is plugged in for long periods or runs hot, per Microsoft.
2. Turn the limit off before travel so you leave with a full battery.
3. Keep vents clear, especially when gaming or charging on a bed or sofa.
4. Update your BIOS and drivers. Dell notes updates often include battery management improvements.

If your laptop is old enough that the battery is a concern, check where its software support stands too. Our guide to Windows 11 24H2 end of support covers what to do if your PC is on an older version.

Verdict

Checking battery health on Windows 11 takes under a minute and costs nothing: run powercfg /batteryreport, divide full charge capacity by design capacity, and you have your number. Anything from 80% up is normal for a laptop that’s a few years old. Then open your laptop maker’s app and set an 80% charge limit if the laptop lives on a desk. It’s the easiest way to keep that number from dropping faster than it has to.

FAQ

How do I check my laptop battery health on Windows 11?

Open Command Prompt as administrator, run powercfg /batteryreport, and open the HTML file it saves. Divide Full Charge Capacity by Design Capacity to get the health percentage.

Where is the battery report saved?

Windows prints the path after you run the command, usually C:\Users\YourName\battery-report.html. Add /output and a path to save it somewhere else.

Is 80% battery health good for a laptop?

It’s normal wear. Apple designs MacBook batteries to keep up to 80% capacity at their 1,000-cycle limit. You’ll notice shorter runtime, but the battery doesn’t need replacing just because of that number.

Does Windows 11 show battery health in Settings?

Not as of October 2026. Settings shows charge level and usage, but you need the battery report or your laptop maker’s app for capacity and health.

Should I keep my laptop plugged in all the time?

It’s fine if you turn on a charge limit (about 80%) in your laptop maker’s app or BIOS. Sitting at 100% for long periods, especially when warm, wears the battery faster.

Why is my full charge capacity higher than design capacity?

New batteries can read slightly above their rated capacity, and the estimate can drift over time. It’s not a problem.

Sources checked October 6, 2026. Menu names vary by model and app version.