The <80% is such a junky metric though, as it's by whatever they calculate. Mine was determined to be 83% but the thing lasted till like Noon at the latest with minimal use.
Exactly. I don't trust their testing method at all. My new battery wasn't covered by Applecare because the phone also tested at 82% or 83%. I decided to look around the store at some new Macbooks for about 20 minutes and the phone completely died while still plugged in for testing.
They admitted that was unusual and just gave me a new battery.