launch day 12 pro here. battery at 90% health. charged with anker wireless pad for about 3 months and then bought a magsafe charger and have been using that since. the only reason i even checked the health is that about a month ago i noticed my battery running quite low in the evenings. this particular iphone has the fastest degrading battery of all the iphones i’ve owned.
it’s dropped 2 percent in the month that i’ve been monitoring it.
one thing i noticed from the start is that although optimized battery charging has always been on, it doesn’t do anything. i’ve never seen the phone pause at 80% charge, ever. it always charges to 100% quickly and then sits there all night per the 24h battery graph.