BatteryManager

Instance properties

Also inherits properties from its parent interface, EventTarget.

BatteryManager.charging Read only: A Boolean value indicating whether the battery is currently being charged.
BatteryManager.chargingTime Read only: A number representing the remaining time in seconds until the battery is fully charged, or 0 if the battery is already fully charged.
BatteryManager.dischargingTime Read only: A number representing the remaining time in seconds until the battery is completely discharged and the system suspends.
BatteryManager.level Read only: A number representing the system's battery charge level scaled to a value between 0.0 and 1.0.

Instance methods

Also inherits methods from its parent interface, EventTarget.

Events

Also inherits events from its parent interface, EventTarget.

chargingchange: Fired when the battery charging state (the charging property) is updated.
chargingtimechange: Fired when the battery charging time (the chargingTime property) is updated.
dischargingtimechange: Fired when the battery discharging time (the dischargingTime property) is updated.
levelchange: Fired when the battery level (the level property) is updated.

Specifications

Specification
Battery Status API # the-batterymanager-interface

Browser compatibility

	desktop					mobile
	Chrome	Edge	Firefox	Opera	Safari	Chrome Android	Firefox for Android	Opera Android	Safari on iOS	Samsung Internet	WebView Android	WebView on iOS
`BatteryManager`	Chrome – Full support Chrome 38 (Release date: 2014-10-07) footnote Full support	Edge – Full support Edge 79 (Release date: 2020-01-15) footnote Full support	Firefox – No support Firefox 43 – 51 (Release date: 2015-12-15) footnote Removed in 52 and later	Opera – Full support Opera 25 (Release date: 2014-10-15) footnote Full support	Safari – No support Safari footnote No support	Chrome Android – Full support Chrome Android 38 (Release date: 2014-10-08) footnote Full support	Firefox for Android – No support Firefox for Android 43 – 51 (Release date: 2015-12-15) footnote Removed in 52 and later	Opera Android – Full support Opera Android 25 (Release date: 2014-10-16) footnote Full support	Safari on iOS – No support Safari on iOS footnote No support	Samsung Internet – Full support Samsung Internet 3 (Release date: 2015-04-10) footnote Full support	WebView Android – Full support WebView Android 38 (Release date: 2014-10-08) footnote Full support	WebView on iOS – No support WebView on iOS footnote No support
`charging`	Chrome – Full support Chrome 38 (Release date: 2014-10-07) footnote Full support	Edge – Full support Edge 79 (Release date: 2020-01-15) footnote Full support	Firefox – No support Firefox 43 – 51 (Release date: 2015-12-15) footnote Removed in 52 and later	Opera – Full support Opera 25 (Release date: 2014-10-15) footnote Full support	Safari – No support Safari footnote No support	Chrome Android – Full support Chrome Android 38 (Release date: 2014-10-08) footnote Full support	Firefox for Android – No support Firefox for Android 43 – 51 (Release date: 2015-12-15) footnote Removed in 52 and later	Opera Android – Full support Opera Android 25 (Release date: 2014-10-16) footnote Full support	Safari on iOS – No support Safari on iOS footnote No support	Samsung Internet – Full support Samsung Internet 3 (Release date: 2015-04-10) footnote Full support	WebView Android – Full support WebView Android 38 (Release date: 2014-10-08) footnote Full support	WebView on iOS – No support WebView on iOS footnote No support
`chargingTime`	Chrome – Full support Chrome 38 (Release date: 2014-10-07) footnote Full support	Edge – Full support Edge 79 (Release date: 2020-01-15) footnote Full support	Firefox – No support Firefox 43 – 51 (Release date: 2015-12-15) footnote Removed in 52 and later	Opera – Full support Opera 25 (Release date: 2014-10-15) footnote Full support	Safari – No support Safari footnote No support	Chrome Android – Partial support Chrome Android 38 – 41 (Release date: 2014-10-08) footnote Partial support footnote Always equal to `0` or `Infinity`. Chrome Android – Full support Chrome Android 42 (Release date: 2015-04-15) footnote Full support	Firefox for Android – No support Firefox for Android 43 – 51 (Release date: 2015-12-15) footnote Removed in 52 and later	Opera Android – Partial support Opera Android 25 – 28 (Release date: 2014-10-16) footnote Partial support footnote Always equal to `0` or `Infinity`. Opera Android – Full support Opera Android 29 (Release date: 2015-04-28) footnote Full support	Safari on iOS – No support Safari on iOS footnote No support	Samsung Internet – Partial support Samsung Internet 3 – 3.2 (Release date: 2015-04-10) footnote Partial support footnote Always equal to `0` or `Infinity`. Samsung Internet – Full support Samsung Internet 4 (Release date: 2016-03-11) footnote Full support	WebView Android – Partial support WebView Android 38 – 41 (Release date: 2014-10-08) footnote Partial support footnote Always equal to `0` or `Infinity`. WebView Android – Full support WebView Android 42 (Release date: 2015-04-15) footnote Full support	WebView on iOS – No support WebView on iOS footnote No support
`chargingchange` event	Chrome – Full support Chrome 38 (Release date: 2014-10-07) footnote Full support	Edge – Full support Edge 79 (Release date: 2020-01-15) footnote Full support	Firefox – No support Firefox 43 – 51 (Release date: 2015-12-15) footnote Removed in 52 and later	Opera – Full support Opera 25 (Release date: 2014-10-15) footnote Full support	Safari – No support Safari footnote No support	Chrome Android – Full support Chrome Android 38 (Release date: 2014-10-08) footnote Full support	Firefox for Android – No support Firefox for Android 43 – 51 (Release date: 2015-12-15) footnote Removed in 52 and later	Opera Android – Full support Opera Android 25 (Release date: 2014-10-16) footnote Full support	Safari on iOS – No support Safari on iOS footnote No support	Samsung Internet – Full support Samsung Internet 3 (Release date: 2015-04-10) footnote Full support	WebView Android – Full support WebView Android 38 (Release date: 2014-10-08) footnote Full support	WebView on iOS – No support WebView on iOS footnote No support
`chargingtimechange` event	Chrome – Full support Chrome 38 (Release date: 2014-10-07) footnote Full support	Edge – Full support Edge 79 (Release date: 2020-01-15) footnote Full support	Firefox – No support Firefox 43 – 51 (Release date: 2015-12-15) footnote Removed in 52 and later	Opera – Full support Opera 25 (Release date: 2014-10-15) footnote Full support	Safari – No support Safari footnote No support	Chrome Android – Full support Chrome Android 38 (Release date: 2014-10-08) footnote Full support	Firefox for Android – No support Firefox for Android 43 – 51 (Release date: 2015-12-15) footnote Removed in 52 and later	Opera Android – Full support Opera Android 25 (Release date: 2014-10-16) footnote Full support	Safari on iOS – No support Safari on iOS footnote No support	Samsung Internet – Full support Samsung Internet 3 (Release date: 2015-04-10) footnote Full support	WebView Android – Full support WebView Android 38 (Release date: 2014-10-08) footnote Full support	WebView on iOS – No support WebView on iOS footnote No support
`dischargingTime`	Chrome – Full support Chrome 38 (Release date: 2014-10-07) footnote Full support	Edge – Full support Edge 79 (Release date: 2020-01-15) footnote Full support	Firefox – No support Firefox 43 – 51 (Release date: 2015-12-15) footnote Removed in 52 and later	Opera – Full support Opera 25 (Release date: 2014-10-15) footnote Full support	Safari – No support Safari footnote No support	Chrome Android – Partial support Chrome Android 38 – 41 (Release date: 2014-10-08) footnote Partial support footnote Always equal to `Infinity`. Chrome Android – Full support Chrome Android 42 (Release date: 2015-04-15) footnote Full support	Firefox for Android – No support Firefox for Android 43 – 51 (Release date: 2015-12-15) footnote Removed in 52 and later	Opera Android – Partial support Opera Android 25 – 28 (Release date: 2014-10-16) footnote Partial support footnote Always equal to `Infinity`. Opera Android – Full support Opera Android 29 (Release date: 2015-04-28) footnote Full support	Safari on iOS – No support Safari on iOS footnote No support	Samsung Internet – Partial support Samsung Internet 3 – 3.2 (Release date: 2015-04-10) footnote Partial support footnote Always equal to `Infinity`. Samsung Internet – Full support Samsung Internet 4 (Release date: 2016-03-11) footnote Full support	WebView Android – Partial support WebView Android 38 – 41 (Release date: 2014-10-08) footnote Partial support footnote Always equal to `Infinity`. WebView Android – Full support WebView Android 42 (Release date: 2015-04-15) footnote Full support	WebView on iOS – No support WebView on iOS footnote No support
`dischargingtimechange` event	Chrome – Full support Chrome 38 (Release date: 2014-10-07) footnote Full support	Edge – Full support Edge 79 (Release date: 2020-01-15) footnote Full support	Firefox – No support Firefox 43 – 51 (Release date: 2015-12-15) footnote Removed in 52 and later	Opera – Full support Opera 25 (Release date: 2014-10-15) footnote Full support	Safari – No support Safari footnote No support	Chrome Android – Full support Chrome Android 38 (Release date: 2014-10-08) footnote Full support	Firefox for Android – No support Firefox for Android 43 – 51 (Release date: 2015-12-15) footnote Removed in 52 and later	Opera Android – Full support Opera Android 25 (Release date: 2014-10-16) footnote Full support	Safari on iOS – No support Safari on iOS footnote No support	Samsung Internet – Full support Samsung Internet 3 (Release date: 2015-04-10) footnote Full support	WebView Android – Full support WebView Android 38 (Release date: 2014-10-08) footnote Full support	WebView on iOS – No support WebView on iOS footnote No support
`level`	Chrome – Full support Chrome 38 (Release date: 2014-10-07) footnote Full support	Edge – Full support Edge 79 (Release date: 2020-01-15) footnote Full support	Firefox – No support Firefox 43 – 51 (Release date: 2015-12-15) footnote Removed in 52 and later	Opera – Full support Opera 25 (Release date: 2014-10-15) footnote Full support	Safari – No support Safari footnote No support	Chrome Android – Full support Chrome Android 38 (Release date: 2014-10-08) footnote Full support	Firefox for Android – No support Firefox for Android 43 – 51 (Release date: 2015-12-15) footnote Removed in 52 and later	Opera Android – Full support Opera Android 25 (Release date: 2014-10-16) footnote Full support	Safari on iOS – No support Safari on iOS footnote No support	Samsung Internet – Full support Samsung Internet 3 (Release date: 2015-04-10) footnote Full support	WebView Android – Full support WebView Android 38 (Release date: 2014-10-08) footnote Full support	WebView on iOS – No support WebView on iOS footnote No support
`levelchange` event	Chrome – Full support Chrome 38 (Release date: 2014-10-07) footnote Full support	Edge – Full support Edge 79 (Release date: 2020-01-15) footnote Full support	Firefox – No support Firefox 43 – 51 (Release date: 2015-12-15) footnote Removed in 52 and later	Opera – Full support Opera 25 (Release date: 2014-10-15) footnote Full support	Safari – No support Safari footnote No support	Chrome Android – Full support Chrome Android 38 (Release date: 2014-10-08) footnote Full support	Firefox for Android – No support Firefox for Android 43 – 51 (Release date: 2015-12-15) footnote Removed in 52 and later	Opera Android – Full support Opera Android 25 (Release date: 2014-10-16) footnote Full support	Safari on iOS – No support Safari on iOS footnote No support	Samsung Internet – Full support Samsung Internet 3 (Release date: 2015-04-10) footnote Full support	WebView Android – Full support WebView Android 38 (Release date: 2014-10-08) footnote Full support	WebView on iOS – No support WebView on iOS footnote No support
Secure context required Experimental	Chrome – Full support Chrome 103 (Release date: 2022-06-21) footnote Full support	Edge – Full support Edge 103 (Release date: 2022-06-23) footnote Full support	Firefox – No support Firefox footnote No support	Opera – No support Opera footnote No support	Safari – No support Safari footnote No support	Chrome Android – Full support Chrome Android 103 (Release date: 2022-06-21) footnote Full support	Firefox for Android – No support Firefox for Android footnote No support	Opera Android – Full support Opera Android 71 (Release date: 2022-09-16) footnote Full support	Safari on iOS – No support Safari on iOS footnote No support	Samsung Internet – Full support Samsung Internet 20 (Release date: 2023-02-10) footnote Full support	WebView Android – Full support WebView Android 103 (Release date: 2022-06-21) footnote Full support	WebView on iOS – No support WebView on iOS footnote No support

Tip: you can click/tap on a cell for more information.

Full support: Full support
Partial support: Partial support
No support: No support
: Experimental. Expect behavior to change in the future.
: Has more compatibility info.

Instance properties

Instance methods

Events

Specifications

Browser compatibility

Legend

See also