Thank you.
The note 17 free battery replacement really only one month from launch. Same as the china phone launch early bird benefits.
Xiaomi should have removed it from the website description.
Quite difficult to get the battery health below 80%. It is calculated based on usage and charging pattern not actual battery conditions. My mi 15 pro after almost 2 years of about 15-20 charge cycles per month still 98%. Read in xiaomi community app, only a few people managed to claim the free replacement within 2 years. 1-2 charge cycles per day usage pattern. Almost 1000 charge cycle at about 2 years.