IPhone battery max capacity % - when to think about replacement?

[Gareth]

space-time wrote:
[quote=Gareth]
Apple says 80%, but mine was at 86% and tested fine but would die in 2/3 of a day, so I had it replaced (also to get it done under the $29 offer). So I’d say there’s a bit of a case by case consideration needed.

how long does it last now?
Don't know b/c I switched to an XS Max. But 2/3 of a day was not normal for the phone. It took a nosedive at some point in the last 6 months that I was using it daily.