Battery Status Checker: Level, Time Left
This battery status checker reads your device battery straight from the browser and shows the charge level, whether it is charging, and the estimated time until empty or full. The numbers update live as the level changes, and you can set a reminder level that alerts you on this page when the battery drops low or reaches a chosen charge. It works on Chrome, Edge and Android browsers that expose the Battery Status API. Safari and Firefox do not share battery data, so on those browsers the tool tells you how to check the battery in your device settings instead.
Battery Status Checker
Check your device battery level, charging state and time left, live in your browser.
How to use the Battery Status Checker
- Open the page. The battery level shows right away if your browser supports it.
- Watch the charging state and time estimate update.
- Set an optional alert level, such as 20 or 80 percent.
- Keep the tab open to see the alert.
Features
- Live battery percentage with a gauge
- Charging or discharging state
- Time to empty or time to full
- Alert when the level reaches your target
- Log of recent changes
- Clear message when the browser has no battery data
Frequently asked questions
Why does it say the battery is not supported?
Safari and Firefox block the Battery Status API for privacy. Chrome and Edge on Android, Windows, Mac and Linux support it.
How accurate is the time left?
It is the estimate given by your operating system. It changes with screen brightness and what is running, so treat it as a guide.
Does a desktop computer show a battery?
Desktops without a battery usually report 100 percent and charging. Laptops show the real level.
Can it warn me at 80 percent?
Yes. Set the alert level and keep the tab open. A message appears and the page title changes when the level is reached.
Is any data sent anywhere?
No. The battery values are read and shown in your browser only.