Battery Status Viewer
See your battery level, charging status and estimated time to full or empty, live in your browser.
- Charge level
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- Status
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- Time to full
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- Time to empty
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Live — the values above update automatically as your battery changes.
How it works
This battery status checker reads the Battery Status API (navigator.getBattery())
that Chromium-based browsers expose to web pages, and shows your charge percentage, whether
the device is charging, and the estimated time to full or to empty. It subscribes to the
browser's battery events, so every value refreshes the moment the operating system reports a
change — plug in your charger and the status flips within a second, no reload needed.
Everything happens in your browser: no readings are uploaded, logged or stored anywhere. Firefox and Safari removed this API for fingerprinting reasons, so on those browsers the page says so instead of guessing. The API also reports only charge and charging state — it does not expose battery wear, cycle count or capacity, which need a native OS tool.
Frequently asked questions
How do I check my battery percentage in a browser?
Open this page in a Chromium-based browser such as Chrome, Edge or Opera. It calls the browser's Battery Status API and shows your charge percentage, whether a charger is connected, and the estimated time to full or to empty. The values update automatically as your battery changes, so you never need to reload.
Which browsers support the Battery Status API?
Chrome, Edge, Opera and most other Chromium-based browsers on desktop and Android support it. Firefox and Safari removed the API because it can be used for fingerprinting, so on those browsers this page tells you the reading is unavailable instead of showing a made-up value.
Can this tool check my battery health or cycle count?
No. The Battery Status API only exposes charge level, charging state and the time estimates the operating system provides — it never reports design capacity, wear level or cycle count. For battery health use a native tool such as the Windows powercfg battery report, macOS System Information, or your phone's battery settings.