Rate of energy change in watts (positive when charging, negative when discharging).

Current energy level of the device in watt-hours.

Maximum energy capacity of the device in watt-hours

Health of the device as a percentage of its original health.

Name of the icon representing the current state of the device, or an empty string if not provided.

If the device is a laptop battery or not. Use this to check if your device is a valid battery.

This will be equivalent to type == Battery && powerSupply == true.

If the power source is present in the bay or slot, useful for hot-removable batteries.

If the device type is not Battery, then the property will be invalid.

Model name of the device. Unlikely to be useful for internal devices.

Native path of the device specific to your OS.

Current charge level as a percentage.

This would be equivalent to energy / energyCapacity.

If the device is a power supply for your computer and can provide charge.

If device statistics have been queried for this device yet. This will be true for all devices returned from UPower.devices, but not the default device, which may be returned before it is ready to avoid returning null.

Current state of the device.

Estimated time until the device is fully discharged, in seconds.

Will be set to 0 if charging.

Estimated time until the device is fully charged, in seconds.

Will be set to 0 if discharging.

The type of device.