45 hours of video playback is insane?! Is this accurate, because if it is I will sell my phone and buy this. Normally my samsung discharges in about 12 hours or less when I'm out, not even watching 12 hours of video.

"On iPhone 18 Pro Max, five minutes of wired charging provides around seven hours of video playback"

Materially impactful feature holy moses! I can plug it in, brush my teeth and I'm set for the work day.

iOS video playback is pretty highly optimised and hardware-assisted, though, right?

Not sure you can really extrapolate non-video battery life from video battery life. I have an ageing iPad and I can get a couple of hours of video when the battery is at 30%, but it would be gone in 45 minutes if I was browsing.