Test of Battery

Check your mobile device's battery status, charge level and estimates in real time.

You can also use this tool on your laptop to check the battery.

API not supported

Your current browser (probably Safari on iOS) blocks access to battery data for privacy reasons, so we can't display charging details.

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State

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Remaining Time

How does the Online Battery Test work?

Our website uses the official HTML5 Battery API (Battery Status API) to communicate directly with your device. This allows us to read real-time variables such as your exact battery percentage and determine whether the device is currently receiving power (connected to the charger) or discharging.

Privacy and Compatibility

Total Privacy: Your battery data is read locally in your browser and is not sent to any of our servers. It is 100% safe.

Compatibility: This feature is available in the vast majority of Chromium-based browsers (such as Google Chrome, Microsoft Edge, Opera, and Android browsers). However, Apple has disabled this feature in Safari for iOS (iPhone/iPad) as a drastic privacy measure, so if you use an iPhone, the tool may not be able to read your data.

What is Test of Battery and how does it work?

Check your mobile device's battery status, charge level and estimates in real time.. This free online tool is designed to be fast, secure, and easy to use directly from your browser without any downloads.

How to use this tool

Follow these simple steps to get the best results instantly:

Select your preferred options or input your data into the panel.
Click the main action button to start the process.
Review your results instantly on the screen.

100% Privacy Guaranteed 🔒

We value your privacy. All processing is done locally on your device. No data is ever sent to or stored on our servers.