Use this check to inspect a browser, device, network, permission, media, or input capability directly in the current runtime before relying on it in another workflow.

Battery probe

Battery probe supplied by the surface.

Assess a battery probe, reporting charge state, estimated runtimes, and low-charge warnings. The tool evaluates the supplied inputs together and returns the named outputs below; it does not infer omitted operating conditions or change the units shown.^[1]

Health

Overall charge-state classification.

Charge level (%)

Remaining charge percentage when reported.

Charging

Whether the device is currently charging.

Runtime estimate (h)

Estimated hours of runtime remaining.

Charge time estimate (h)

Estimated hours until fully charged.

Issues

Stable machine-facing warning codes.

• Results describe the current browser session and can change with permissions, privacy controls, hardware, drivers, network path, power state, or browser updates. Unsupported or withheld information is not proof that the underlying capability is absent.
• Use finite inputs in the displayed units and preserve more precision than the final presentation requires. Independently verify safety-critical, financial, compliance, or production decisions.

Repeat the check in the browser and device that will actually be used, then confirm important behavior with the relevant operating-system or network diagnostics. Avoid granting permissions that are unnecessary for the test.

• Storage Checker

  Assess storage health from a usage probe, reporting headroom classification and warnings.

• What Is My IP Address?

  Show the public IPv4 and IPv6 addresses available to the current internet connection, reporting either family as unavailable when its probe cannot connect.

• Webcam Tester

  Diagnose a webcam from a captured frame probe, reporting verdict, frame rate, and resolution.