🔋 Check Your Battery Health in Seconds
Upload your Windows battery report or manually enter battery data to calculate health percentage. Works on Windows, Mac, and Linux.
CheckBatteryHealth provides accurate battery health analysis to help extend your device's lifespan. Our free tool calculates battery health percentage by comparing design capacity with current full charge capacity. Understanding your battery's health is crucial for optimal device performance.
Analyze Your Battery Now →Key Features
⚡ Instant Analysis
Drag & drop your Windows battery report and get your health percentage in real-time.
Our advanced algorithms provide accurate battery health calculations in seconds.
💻 Cross-Platform
Works for Windows, macOS, and Linux users with manual entry support.
Compatible with all major operating systems for universal battery health testing.
🔒 100% Private
All calculations happen securely in your browser or on our API — we never store your data.
Your privacy is protected with all data processing occurring locally on your device.
Battery health is measured by comparing the battery's current capacity to its original design capacity. A healthy battery typically maintains 80-100% of its original capacity, while batteries below 80% may need replacement. Regular monitoring helps maintain optimal device performance. For more information about battery care, visit our About page or check our detailed guides.
How It Works
Generate Report
On Windows, run powercfg /batteryreport in Command Prompt.
On Mac/Linux, use system tools to get capacity data.
Upload or Enter
Upload your battery-report.html or manually enter design & full charge capacity.
Our tool securely processes your data locally.
Get Health %
Instantly see your battery health percentage with color-coded results.
Receive recommendations for optimal battery care.
Battery health analysis is based on the relationship between design capacity (original capacity when new) and current full charge capacity (actual capacity). The percentage directly correlates to your battery's remaining useful life. Learn more about our approach to battery analysis or check out our frequently asked questions for more information.