Use the Battery Status Checker
Check your laptop, phone or tablet battery in the browser: charge level, charging status, time to full or remaining, change rate and a session log.
- Free to use
- No signup
- Nothing to install
- Runs in your browser
72% · Running on battery · 3 h 41 min left · −18.4 %/hour.\nCharger connected → “Charging — 48 min until full”.Open the Battery Status Checker
Illustration. Open the tool for the real thing.
What is the Battery Status Checker?
See your device's battery at a glance in your browser: the current charge, whether it is running on battery or plugged in, and the operating system's estimate of the time to full charge or the time remaining. The battery icon changes colour as it drains, and a live change rate in percent per hour shows how quickly you are gaining or losing charge.
A session log records every change — charger connected, charger removed, each percent — so you can time a charge or see what drains the battery when you run a game or a video. The Battery API is available in Chrome, Edge and Opera on laptops, tablets and Android phones. Health data such as battery wear and cycle count is not exposed to websites; the page explains where to find it on your system.
3 steps to your result
Open the tool and follow along. Nothing to install.
What you get
Percentage, charging or discharging, plugged in or not.
Time to full or time remaining from the browser.
Percent gained or lost per hour during this session.
A timestamped log you can copy.
AZRS tools are free to open and use.
It opens in your browser, so there is nothing to download.
Used for
Pick one to see how it fits.
How it compares
A plain look at this tool next to the usual alternative.
| This utility | Desktop software | |
|---|---|---|
| Install | Nothing to install | Usually an app or program to install |
| Account | No signup | Depends on the product |
| Cost | Free to use | Free or paid, depends on the product |
| Where it runs | In your browser tab | On your computer |
Questions people ask
Why does it say the Battery API is unavailable?
Safari and Firefox do not provide it. Use Chrome, Edge or Opera.
Can it show battery health?
No. Websites cannot read wear or cycle count. Use your operating system's battery report.
How accurate is the time remaining?
It is the operating system's estimate and changes with your workload.
Why does a desktop show 100% charging?
Desktops without a battery report a full, charging battery.
Is my data sent anywhere?
No. Readings stay in your browser.
More free tools
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Try the Battery Status Checker now
See your battery level, charging state and time remaining live in the browser. Free to use.
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