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# batteryLevel

The battery’s current percent charge.

```
var batteryLevel: Float { get }
```

## Discussion

If battery monitoring is enabled, this property is set to a value between `0.0` (0% charge) and `1.0` (100% charge). When the [`batteryState`](/documentation/WatchKit/WKInterfaceDevice/batteryState) property is set to [`WKInterfaceDeviceBatteryState.unknown`](/documentation/WatchKit/WKInterfaceDeviceBatteryState/unknown) (for example, when battery monitoring is disabled), the value is `-1.0`.

---

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