Windows Battery Health Check – Read Your Laptop Battery Report Online

This page helps you understand the real health of your laptop battery.
You can generate a Windows battery report on your own computer, then upload it here.
Everything is processed in your browser – the report file is not stored on our server.

How to generate a Windows battery report

The battery report is created by a built-in Windows tool called powercfg.
Here are a few common ways to generate it:

Method 1 – Command Prompt (recommended)

1. Press Windows key, type cmd.
2. Right-click Command Prompt and choose Run as administrator.
3. In the black window, paste this command and press Enter:

powercfg /batteryreport /output "%USERPROFILE%\Desktop\battery-report.html"

After a few seconds, Windows will create a file called
battery-report.html on your desktop.

Method 2 – PowerShell or Windows Terminal

1. Press Windows key, type PowerShell (or Windows Terminal).
2. Right-click and choose Run as administrator.
3. Run the same command:

powercfg /batteryreport /output "%USERPROFILE%\Desktop\battery-report.html"

This does exactly the same thing as Method 1, just in a different shell.

Method 3 – Create a reusable shortcut (optional)

If you check battery health frequently, you can create a small script:

1. Create a new text file on your desktop and name it for example battery-report.cmd.
2. Edit it and put this single line inside:

powercfg /batteryreport /output "%USERPROFILE%\Desktop\battery-report.html"

3. Save the file and double-click it whenever you want to refresh the report.

Every time you run it, Windows will overwrite battery-report.html with the latest data.

Common laptop battery problems this tool can help you understand

The Windows battery report contains detailed information such as
Design capacity, Full charge capacity and sometimes
Cycle count. By comparing these values, you can understand many common issues:

• Battery drains quickly – If full charge capacity has dropped far below
  design capacity (for example < 60%), the battery will run out much faster than when it was new.
• Laptop shuts down suddenly at 20–30% – A heavily worn battery can no longer
  provide stable power at low charge levels, causing sudden shutdowns.
• Battery stuck at a certain percentage – If the battery can only charge up to
  60–80%, it often means the real full charge capacity has already decreased significantly.
• “Plugged in, not charging” – Sometimes this is caused by power settings or
  the AC adapter, but in other cases the battery is old and cannot accept charge properly anymore.
• Battery not detected – If Windows does not see the battery at all,
  it may be a serious battery or mainboard issue and replacement is usually required.
• High cycle count – Many modern laptop batteries are designed for around
  300–1000 full charge cycles. If your cycle count is very high, noticeable wear is normal.
• Battery swelling (bulging case, lifted touchpad / keyboard) – This is a safety issue.
  If you see any physical swelling, stop using the battery and replace it immediately.

Our online checker reads the key values from your Windows report and gives you
a simple health estimate, so you can decide whether it is time to replace the battery.

How to understand your result

The tool compares Full charge capacity with Design capacity
and calculates an approximate health percentage:

• 80–100% – Good: Your battery is in good condition.
  You can continue to use it without any urgent need to replace.
• 60–79% – Aging: Noticeable wear. If your runtime is already too short
  for your daily work or travel, replacing the battery will bring a clear improvement.
• Below 60% – Poor: The battery is heavily degraded.
  We generally recommend replacing it to avoid sudden shutdowns and to restore normal runtime.

Keep in mind that this is an estimate based on the information Windows provides.
Different laptops and usage patterns may behave slightly differently,
but it is a very useful starting point when deciding whether to buy a new battery.

Next steps if your battery is in poor condition

If the health percentage is low, or if you already experience sudden shutdowns,
short runtime, or charging problems, a replacement battery is usually the most effective solution.

When you look for a new battery, pay attention to:

• Exact laptop model or original battery part number (printed on the old battery label).
• Voltage (V) and capacity (Wh or mAh) that match your original battery specifications.
• Reliable supplier, clear warranty and return policy.

If you need help finding the right replacement battery for your laptop model,
feel free to contact us with your laptop model and (if possible) a photo of the original battery label.

Find a replacement battery for my laptop