The iPhone 15 Pro Max has a fantastic battery. I charge it once during the day to ~80% after it charges down to ~60% and then charge it up to ~100% before going to sleep, then I unplug it overnight. The battery life is exceptional and iOS 17 is definitely optimized for the iPhone 15 Pro Max to last through the day with normal use and through most of the day with heavy use and also by offering features like seeing your battery cycles in General -> About -> Battery.
I recommend you upgrade to the iPhone 15 Pro Max. I just upgraded from my iPhone XS Max that had a battery health of 84% before I upgraded. I absolutely love this phone. It blows the iPhone 14 Pro Max out of the water.
The iPhone 15 Pro Max has a fantastic battery. I charge it once during the day to ~80% after it charges down to ~60% and then charge it up to ~100% before going to sleep, then I unplug it overnight. The battery life is exceptional and iOS 17 is definitely optimized for the iPhone 15 Pro Max to last through the day with normal use and through most of the day with heavy use and also by offering features like seeing your battery cycles in General -> About -> Battery.
I recommend you upgrade to the iPhone 15 Pro Max. I just upgraded from my iPhone XS Max that had a battery health of 84% before I upgraded. I absolutely love this phone. It blows the iPhone 14 Pro Max out of the water.