BatteryManager

Limited availability

This feature is not Baseline because it does not work in some of the most widely-used browsers.

Secure context: This feature is available only insecure contexts (HTTPS), in some or allsupporting browsers.

TheBatteryManager interface of theBattery Status API provides information about the system's battery charge level. Thenavigator.getBattery() method returns a promise that resolves with aBatteryManager interface.

Since Chrome 103, theBatteryManager interface ofBattery Status API only expose to secure context.

Instance properties

Also inherits properties from its parent interface,EventTarget.

BatteryManager.chargingRead only: A Boolean value indicating whether the battery is currently being charged.
BatteryManager.chargingTimeRead 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.dischargingTimeRead only: A number representing the remaining time in seconds until the battery is completely discharged and the system suspends.
BatteryManager.levelRead 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 (thecharging property) is updated.
chargingtimechange: Fired when the battery charging time (thechargingTime property) is updated.
dischargingtimechange: Fired when the battery discharging time (thedischargingTime property) is updated.
levelchange: Fired when the battery level (thelevel property) is updated.