can u help me ? my battery heath not

On an iPhone, above 80% battery health is fine, below 80% is headed for replacement.

Click on the following blue-text link for more battery info > https://www.apple.com/batteries/maximizing-performance/

For battery service on various Apple devices, see this link > https://www.apple.com/batteries/service-and-recycling/

See if Anything here helps

Battery and performance of iPhone 11 and later

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