---
title: HIDUsage.BatterySystemUsage.optionalManufacturingFunction4
framework: corehid
role: symbol
role_heading: Case
path: corehid/hidusage/batterysystemusage/optionalmanufacturingfunction4
---

# HIDUsage.BatterySystemUsage.optionalManufacturingFunction4

## Declaration

```swift
case optionalManufacturingFunction4
```