New original 2658mAh battery for iPhone XS, including adhesive and new screws (Service Pack) in original packaging directly from Apple.

If the battery is replaced outside an authorized service, the phone will display a message that it cannot verify the battery's authenticity. This situation is standard, does not affect battery life, and will only appear in the battery health settings.

Although this is an original battery, the battery management system (BMS) is paired with the motherboard, and after replacement, the iPhone may report the inability to verify the battery's authenticity. This warning does not affect functionality. To remove this warning, it is necessary to use the original battery's BMS, as shown in the video: