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BatteryManager: chargingTime property

The BatteryManager.chargingTime property indicates the amount of time, in seconds, that remain until the battery is fully charged or 0 if the battery is already fully charged or the user agent is unable to report the battery status information. If the battery is currently discharging, its value is Infinity. When its value changes, the chargingtimechange event is fired.

Note: Even if the time returned is precise to the second, browsers round them to a higher interval (typically to the closest 15 minutes) for privacy reasons.

Value

A number.

Examples

HTML

html

<div id="chargingTime">(charging time unknown)</div>

JavaScript

js

navigator.getBattery().then((battery) => {
  const time = battery.chargingTime;

  document.querySelector(
    "#chargingTime",
  ).textContent = `Time to fully charge the battery: ${time}s`;
});

Specifications

Specification
Battery Status API
# dom-batterymanager-chargingtime

Browser compatibility

Desktop Mobile
Chrome Edge Firefox Internet Explorer Opera Safari WebView Android Chrome Android Firefox for Android Opera Android Safari on IOS Samsung Internet
chargingTime 38 79 43–52 No 25 No 42
38–42Always equal to 0 or Infinity.
 42
38–42Always equal to 0 or Infinity.
 43–52 29
25–29Always equal to 0 or Infinity.
 No 4.0
3.0–4.0Always equal to 0 or Infinity.

See also

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Licensed under the Creative Commons Attribution-ShareAlike License v2.5 or later.
https://developer.mozilla.org/en-US/docs/Web/API/BatteryManager/chargingTime