If you are transferring the battery flex chip from the old iPhone 11 battery to a new one so you can keep the Apple settings, you'll need this Tag on Flex. You attach the old flex cable to the tag on flex and solder to the new battery
Part Includes:
1x Replacement Battery Tag-on-Flex Cable
12 Month Warranty
Please Note
This parts is not compatible with iPhone 11 Pro or iPhone 11 Pro Max