My iPhone X which has been exclusively charged with Original Apple 30W USB-C charger has battery health down to 86% in just 8 months. So I was wondering if USB-C Power Delivery charging has any substantial effect on battery health. Anyone care to share if their iPhone X or XS battery health deteriorated in such a quick span using normal 10W charger provided with the phone? I ask because I had iPhone 7 previously and even after using it for 1 year 6 months, with similar usage pattern as iPhone X, it’s battery health was still at 95%.