BatteryManager

Secure context

The BatteryManager interface of the Battery Status API provides information about the system’s battery charge level. The getBattery() method returns a promise that resolves with a BatteryManager interface.

Since Chrome 103, the BatteryManager interface of Battery Status API only expose to secure context.

Instance properties

Also inherits properties from its parent interface, EventTarget.

• charging Read only
  • : A Boolean value indicating whether the battery is currently being charged.
• 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.
• dischargingTime Read only
  • : A number representing the remaining time in seconds until the battery is completely discharged and the system suspends.
• 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

Browser compatibility

See also

• The Battery Status API
• getBattery()