Lenovo Laptop Battery Health Check – Read Your Windows Battery Report Online

This page is designed for Lenovo laptop users who want to check the real health of their battery.
Windows can generate a detailed battery report using powercfg /batteryreport.
You then upload the report here to see an easy-to-understand health estimate and replacement advice.
Everything is processed in your browser – the report file is not stored on our server.

Browse replacement batteries for Lenovo laptops

How to generate a Windows battery report on your Lenovo laptop

The battery report is created by a built-in Windows tool called powercfg.
It works on most Lenovo series, including ThinkPad, IdeaPad,
Yoga, Legion, ThinkBook and Lenovo V series.
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 on your Lenovo laptop, you can create a small script:

1. Create a new text file on your desktop and name it for example lenovo-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 Lenovo 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 typical
battery issues on Lenovo laptops:

• Battery drains quickly on ThinkPad / IdeaPad – If full charge capacity
  has dropped far below design capacity (for example < 60%), your Lenovo laptop will
  run out of power much faster than when it was new.
• Lenovo Legion or gaming models shut down suddenly under load – A heavily worn battery
  can no longer provide stable power at low charge levels during gaming or high CPU/GPU usage,
  causing sudden shutdowns or black screens.
• Battery stuck at 60–80% (or not charging to 100%) – Sometimes this is due to
  Lenovo Vantage / power management settings (battery conservation mode); in other cases, the real full charge capacity
  has already decreased significantly.
• “Plugged in, not charging” on Lenovo – This may be related to the AC adapter,
  USB-C / Slim Tip port, BIOS or power settings. However, if the battery is very old or has a high cycle count,
  it can also fail to accept charge properly.
• Battery not detected on a Lenovo laptop – 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 charge cycles) – Many Lenovo batteries are designed for around
  300–1000 full charge cycles. If your cycle count is very high, noticeable wear is expected.
• Battery swelling (bulging case, lifted touchpad / keyboard) – This is a safety issue.
  If you see any physical swelling on your Lenovo battery, stop using it and replace it immediately.

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

How to understand your Lenovo battery result

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

• 80–100% – Good: Your Lenovo battery is in good condition.
  For everyday work, study or light gaming, you can continue using it without urgent replacement.
• 60–79% – Aging: Noticeable wear. If your Lenovo laptop runtime is already too short
  for meetings, travel or gaming sessions, a new 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.

This percentage is an estimate based on the information Windows provides.
Different Lenovo models 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 Lenovo laptop battery is in poor condition

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

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

• Exact Lenovo laptop model (for example: ThinkPad T / X / L / P series, IdeaPad 3/5, Yoga, Legion, ThinkBook, etc.).
• Original battery part number printed on the old battery label (e.g. L15M3PB0, L19M3PF9, L18M4PF3, 01AV423, 01AV427, 5B10Wxxx, etc.).
• 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 Lenovo laptop model,
you can contact us with your model name and (if possible) a clear photo of the original battery label.

View Lenovo-compatible replacement batteries