I have the standard iPhone 13 (not mini) and the battery longevity is probably the best of any phone I've ever owned. At over 3.5 years old it still reports 89% battery health and lasts much longer than I need. Previous iPhones I owned were all pretty much on their last legs by that age.

I haven't upgraded it to iOS 26 / Liquid Glass, though, and given what I'm seeing/hearing, I don't plan to.