Original battery in a Service Pack directly from Apple for the iPhone 12 Pro Max.

Part 661-18428

This part allows diagnostics to be completed after repair - it can be paired with the phone, preventing notifications about unknown parts.

A set of screws is included with the purchased part. 

After replacing the part, the Repair Assistant tool will be available on the device. It is recommended to complete the repair by running this tool. For this type of repair, follow the instructions in the repair guide: https://support.apple.com/cs-cz/docs/iphone