I bought a mint condition used 11 Pro (September of last year) before the 12 series came out + I got a ton of accessories with it including the official battery case. This thing has been a absolute battery champ and I still somehow have 100% battery health. I might be rocking this thing till they shut down 4G LTE 😂 I don’t even use the battery case unless Im going on weekend trips if my battery health ever does actually go down I’ll put it on more often.
I had used 2 Android flagships before it (Galaxy S10 and OnePlus 7 Pro) both felt like they had pretty degraded batteries after only 6 months of usage so I said F it and went back to iPhone. Hopefully the 12S/13 has a bigger battery again.