My battery Health dropped by 3% in just 3months I was using the original adapter and the cable was my iPad cable
Cable and Charger is not the issue bro. on an average depending on users usage type 1% a month reduce is normal. measure battery health 5 to 6 months once and that will help us to understand how much average reduce happened.
Also make sure to follow suggested charging practice in upcoming days. that will help to maintain battery health over long run. We cannot freeze the battery health percentage, but depending on our usage the reduce will be gradual.
