The iPhone 13 Pro Max may only have a 4325 mAh battery but it still provides better battery life than Android smartphones with up to 6000 mAh batteries. This is particularly noteworthy considering Apple finally equipped the device with a 120 Hz display like its Android counterparts.
https://www.notebookcheck.net/Apple-iPhone-13-Pro-Max-still-the-battery-champ-in-spite-of-120-Hz-display.563071.0.html