---
title: "readAttributeBatReplacementNeeded(completionHandler:)"
framework: matter
role: symbol
role_heading: Instance Method
path: "matter/mtrbaseclusterpowersource/readattributebatreplacementneeded(completionhandler:)"
---

# readAttributeBatReplacementNeeded(completionHandler:)

## Declaration

```swift
func readAttributeBatReplacementNeeded(completionHandler: @escaping @Sendable (NSNumber?, (any Error)?) -> Void)
```

```swift
func readAttributeBatReplacementNeeded() async throws -> NSNumber
```