BatteryManager

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

Instance properties

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

Inherits methods from its parent interface: EventTarget.

Events

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

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