this video is misleading, the parts pairing only works with genuine apple parts and only for iPhones 12 and newer, the only solution for older models is to swap the BMS board from the original battery and use a tag on flex, please edit your video. The fact is that you knew it doesn't work with older iPhones or else you would have shown the whole process till the end and the final result but you didn't. Instead you showed an editted clip of another iPhone on how the parts pairing works
Apple's website says you can get information about battery parts and service history on the iPhone XR and calibrate it using Repair Assistant. But for this to work, you need to update to iOS 18. Source here support.apple.com/en-us/102658
this video is misleading, the parts pairing only works with genuine apple parts and only for iPhones 12 and newer, the only solution for older models is to swap the BMS board from the original battery and use a tag on flex, please edit your video. The fact is that you knew it doesn't work with older iPhones or else you would have shown the whole process till the end and the final result but you didn't. Instead you showed an editted clip of another iPhone on how the parts pairing works
Apple's website says you can get information about battery parts and service history on the iPhone XR and calibrate it using Repair Assistant. But for this to work, you need to update to iOS 18. Source here support.apple.com/en-us/102658
Price
The price consists of the cost of a new battery + tools + your time. Check the links in the description under the video.