01
Keyboard Test
Test keyboard keys, inspect repeated inputs and review a local test summary. Get clear…
Battery Status Test
Shows charge level, whether power is connected, and the estimated time to full or empty, updating live as it changes.
Device Tests
Nothing uploaded
No sign-up
Free, unlimited
The test starts automatically — follow the prompts above.
In short
Battery Status Test is a free online tool on inputtesthub.com that shows charge level, whether power is connected, and the estimated time to full or empty, updating live as it changes. It needs no account, no download and no payment, and there is no daily usage limit. Everything is processed inside your own browser, so the data you paste is never uploaded to a server.
How to use the Battery Status Test
- The test starts on its own — no button to press and nothing to install.
- Follow the prompt in the test panel and watch the readings update live.
- Press Reset to start over with a clean slate.
About the Battery Status Test
The Battery Status Test shows charge level, whether power is connected, and the estimated time to full or empty, updating live as it changes. It runs as plain JavaScript inside the page, which means there is no upload step, no queue and no size limit imposed by a server — the only limit is your own device.
What people use it for
- Watching charge behaviour while you plug and unplug a charger.
- Checking whether a laptop is actually charging from a particular USB-C port.
Where this tool stops
Charge level and charging state only. Battery health, wear and cycle count are not available to any website.
Frequently asked questions
Can this tell me my battery health?
No, and neither can any other web page. The browser API reports charge level and charging state only — never cycle count, design capacity or wear. For health, use Settings → Battery on iOS and Android, System Settings → Battery on macOS, or run <span class="mono">powercfg /batteryreport</span> on Windows.
Nothing is reported at all.
Safari and Firefox removed the Battery Status API deliberately, because charge level turned out to be a useful fingerprinting signal. Chrome and Edge still support it.
Is the Battery Status Test free?
It is free, with no account, no trial and no daily cap. Every device tests tool on inputtesthub.com works the same way: open the page and use it.
Can you see what I put into this utility?
No. The Battery Status Test runs entirely in your browser using JavaScript. Your input never reaches inputtesthub.com or any third party — open your browser's Network tab while you use it and you will see no request go out.
What do people use the Battery Status Test for most?
The most common reasons people reach for it: watching charge behaviour while you plug and unplug a charger. Checking whether a laptop is actually charging from a particular USB-C port. It is built for exactly those cases rather than being a general-purpose tool with this bolted on.
Where does the Battery Status Test stop being reliable?
Charge level and charging state only. Battery health, wear and cycle count are not available to any website. Knowing where a tool stops being trustworthy matters more than the cases where it works.
Why does the test start on its own?
No installation, no extension and no driver. The Battery Status Test uses the browser's own device APIs and begins as soon as the page loads, so there is nothing to press first. Press Reset at any point to start over with a clean slate.
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