---
title: WKInterfaceDeviceBatteryState.unknown
framework: watchkit
role: symbol
role_heading: Case
path: watchkit/wkinterfacedevicebatterystate/unknown
---

# WKInterfaceDeviceBatteryState.unknown

An unknown battery-charging state.

## Declaration

```swift
case unknown
```

## Discussion

Discussion When the device’s isBatteryMonitoringEnabled property is set to false, its batteryState property is set to WKInterfaceDeviceBatteryState.unknown.

## See Also

### Battery States

- [WKInterfaceDeviceBatteryState.charging](watchkit/wkinterfacedevicebatterystate/charging.md)
- [WKInterfaceDeviceBatteryState.full](watchkit/wkinterfacedevicebatterystate/full.md)
- [WKInterfaceDeviceBatteryState.unplugged](watchkit/wkinterfacedevicebatterystate/unplugged.md)