In fact it went from 97 to 94 in two weeks. mainly use a five watt charger. I do have it connected for apple CarPlay a lot while going to work. I’ve never seen an iPhone drop capacity so quickly. I know apple won’t replace it until it gets to 80%. Any idea what’s going wrong? Thanks in advance.
It is my experience that even if you did everything perfectly and you got a less than perfect battery from the factory, this drop could occur. I have had years of comparing heavy vs babying usage (my wife is a heavy phone user, charges wirelessly while I am very light and baby my battery and we always get the same phones). She will let her phone drop to 0% often, have to charge it daily, and is a heavy user - will have hundreds more cycles than I do. Despite this, our battery health values are usually identical. Last year her 12 Pro Max dropped quite a bit right before we upgraded to the 13 Pro Max - but most of our other phones were near identical health.
That's why I get AppleCare - I'll use my phone how I want, if it goes down below 80% before 2 years - I'll walk into Apple asking for a replacement.
This is a tool that is meant to assist my life not make my life difficult. So while I try to keep it 40-80, I won't lose sleep if I charge it to 100%. And I charge it with whatever is handy - an Anker battery, a 30w Anker USB C to lightning charger, my car, etc.
If I had the OP's phone:
1. I'd rely more on coconutBattery to get more of a clearer picture from purchase.
2. I'd use the crap out of the phone and if it continued to fall, I'd see if I could find a sympathetic Apple Genius who would either replace my phone or let me buy a battery replacement (and if not, continue to use it and when it dropped below 80% before 2 years, get a free replacement).