About Us

Battery Health Checker is a free online tool for checking laptop and device battery status and health without installing software. We built it for people who want a clear reading of charge level, charging state, and estimated health — without creating an account or uploading private system files to a stranger’s server.

The live battery view uses what your browser can share through standard web APIs. Battery health analysis works from a report your operating system can produce (for example a Windows battery report, or equivalent power information on macOS and Linux). That analysis runs in your browser on your device.

What we believe

Battery checks should be fast, understandable, and private. You should not need a download, a login, or a sales pitch to see whether a pack is aging normally or worn down. We keep the tool free to use and design pages so the result is easy to read on phones and desktops.

Who this is for

Anyone comparing runtime to when the laptop was new, shoppers checking a used machine before buying, remote workers who rely on unplugged hours, and anyone who wants a second opinion before replacing a battery.

How the site stays free

Battery Health Checker is supported by advertising (including Google AdSense when ads are enabled on the site). Ads help cover hosting and development so the battery test can stay free. See our Privacy Policy for how advertising and cookies work.