Battery Health Test
Check your device's battery level, charging status, and estimated time remaining.
How to Use This Test
- Open this page on a laptop, tablet, or phone to automatically detect your device's battery status.
- View the battery level percentage, charging state, and estimated time to full charge or discharge.
- Monitor the readings over time to observe discharge rate and battery behavior under different workloads.
What This Test Checks
This battery test uses the Browser Battery Status API to give you real-time information about your device's power status, helping you understand your battery's current condition.
- Current battery charge level as a percentage
- Charging or discharging status
- Estimated time remaining until fully charged
- Estimated time remaining until battery is empty
- Real-time updates as battery status changes
Troubleshooting
If you're having issues:
- Try using Chrome, Edge, or Opera as these browsers have the best Battery Status API support.
- Firefox and Safari have limited or no support for the Battery API due to privacy restrictions.
- If you are on a desktop computer without a battery, the test will not be able to display any data.
- Ensure your browser is up to date for the best compatibility with the Battery Status API.
Frequently Asked Questions
How accurate is this online battery test?
This test uses the Battery Status API built into your browser, which reads data directly from your operating system. The battery level percentage and charging status are accurate. However, time remaining estimates are approximations based on current usage and may vary.
Why doesn't the battery test work in my browser?
The Battery Status API is not supported in all browsers. It works in Chrome, Edge, and Opera on most platforms, but Firefox and Safari have removed or restricted support for privacy reasons. Desktop computers without batteries will also show no data.
How can I improve my device's battery life?
Lower screen brightness, close unused apps and browser tabs, disable Bluetooth and Wi-Fi when not needed, enable battery saver mode, and avoid extreme temperatures. Keeping your battery between 20% and 80% charge can also help preserve long-term battery health.
Can this test detect battery degradation?
This test shows your current battery level and charging state but cannot directly measure battery degradation or capacity loss. For detailed battery health reports, use your operating system's built-in tools like Battery Report on Windows or System Information on macOS.
Time to upgrade? Consider these battery accessories:
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