My 13pro is at 84% capacity, but in the last month or two it seems to lose charge much more rapidly than it used to. Probably the only reason I'll consider an upgrade.

Very jealous over here. I had a 12 mini whose battery dropped off a cliff just in time for the mini line to get discontinued.

Big phones are overrated.

You didn't replace the battery[0]?

0. https://www.ifixit.com/products/iphone-13-mini-battery