Keeping your laptop battery healthy is essential for performance, portability, and longevity. Whether your laptop feels like it drains too quickly or you’re just curious about its condition, Windows 10 and Windows 11 include a built‑in tool that lets you instantly check detailed battery health stats—all using just the Command Prompt.
In this guide, you’ll learn exactly how to generate and read a battery health report in Windows using CMD, plus tips to maintain a healthier battery for the long run.
✅ Why Check Your Laptop Battery Health?
Over time, all laptop batteries degrade. Checking your battery health helps you:
- Understand how much charge your battery can still hold
- Detect battery wear early
- Troubleshoot sudden shutdowns or fast draining
- Decide whether it’s time to replace the battery
And the best part? You don’t need third‑party tools—Windows gives you everything you need out of the box.
🖥️ How to Check Laptop Battery Health Using CMD (Windows 10/11)
Step 1: Open Command Prompt
- Press Windows Key + S
- Type cmd
- Right‑click Command Prompt → select Run as administrator
Step 2: Generate the Battery Report
In the Command Prompt window, type the following command and hit Enter:
Windows will instantly generate a detailed Battery Report and save it to a file, usually here:
C:\Users\<YourUsername>\battery-report.html
You’ll see a confirmation message with the exact file path.
Step 3: Open and Review the Battery Health Report
Navigate to the file location and open battery-report.html in any browser.
Inside, you’ll find key sections such as:
🔋 1. Installed Batteries
Shows your battery’s design capacity vs. its current full‑charge capacity.
📈 2. Battery Capacity History
Tracks how your battery has degraded over time.
⚡ 3. Usage History
Logs power usage and charging activity.
🔌 4. Battery Life Estimates
Predicts current expected battery life compared to when the laptop was new.
These details help you figure out whether your battery is performing well or needs replacement.
🔍 How to Understand Battery Wear Level
Look at these two values:
- Design Capacity = original battery capacity when new
- Full Charge Capacity = current maximum capacity
Use this formula:
Battery Wear (%) = (1 - Full Charge Capacity / Design Capacity) × 100
A battery wear level above 20–25% often means you’ll start experiencing weaker performance and shorter life.
💡 Tips to Improve Battery Health
- Avoid keeping your laptop plugged in 24/7
- Keep battery levels between 20–80% for optimal lifespan
- Reduce screen brightness and background apps
- Enable Windows battery saver mode
- Keep Windows and drivers updated
- Avoid excessive heat—battery’s worst enemy
🏁 Final Thoughts
Checking your laptop battery health in Windows 10/11 using CMD is fast, accurate, and requires zero extra software. By regularly reviewing your battery report, you can stay ahead of performance issues and extend your laptop’s lifespan.
