# OnOperationModeStart()

> Called when battery mode becomes the active operation mode. Prepares the Indexer and enables the battery-oriented scalers.

## Definition

* **Type:** Method
* **Namespace:** [UnityEngine.AdaptivePerformance](/engine/6000.7/script-reference/unityengine/adaptiveperformance.md)
* **Assembly:** UnityEngine.AdaptivePerformanceModule

```csharp
public void OnOperationModeStart()
```