Monitor your device's power status with our free Battery Status diagnostic tool. View live battery charge percentages, AC power adapter connection states, and charge/discharge time estimates directly inside your browser with complete privacy.
Open the tool to trigger automatic hardware power interface inspection.
View the live animated battery cell, percentage level, and AC power indicators.
Check estimated charge or discharge times and level fraction breakdown.
Queries hardware power interfaces via navigator.getBattery() for pinpoint battery metrics.
Updates dynamically when plugging/unplugging your AC charger or as battery capacity changes.
All diagnostics execute locally in browser RAM. No telemetry is collected or sent to external servers.
The W3C Battery Status API provides a JavaScript BatteryManager interface via navigator.getBattery(). It exposes four core properties: level (0.0 to 1.0), charging (boolean), chargingTime (seconds), and dischargingTime (seconds).
Event listeners like chargingchange and levelchange allow real-time DOM visualizer updates when an AC power cable is plugged in or capacity fluctuates.
Because precise battery charge values can be combined with other hardware traits for device fingerprinting, privacy-focused engines (like Firefox or Tor Browser) restrict API access. In such cases, our tool gracefully switches to interactive simulation controls.