Translated by google:
>>The battery performance on my iPhone 17 Pro Max running iOS 26.6 is very poor.
I am currently using an iPhone 17 Pro Max on iOS 26.6 and am experiencing significant battery drain.
I am very careful with how I use the battery. I charge it to 95% overnight (from 11 PM to 7 AM), yet the level drops to 88% even without me using the phone at all.
My current battery health is at 98% after 10 months of use.
Apple needs to find an optimal solution for us users. Apple's batteries are becoming increasingly poor in quality, and users have to spend a lot of money on replacements if they want to keep using their phones.
I think this iPhone 17 Pro Max is terrible.<<
Did you check, which apps or processes are shortening your daily battery life?
You can find statistics in Settings/Battery. Have a look at this related article and see what can be done about it:
If the battery in your iPhone or iPad drains too quickly - Apple Support
Did you also try to reset the iPhone to factory settings, in case the iOS software caused the issues?
To rule out defective data from the backup, set it up as a new device and test the battery life.
Restore your iPhone, iPad, or iPod to factory settings using a computer - Apple Support
If the battery life is back to normal, restore from the latest backup and check the battery life again.
Also have a look at this excellent user tip about Battery Health:
Battery Health Decline - Should You Worry… - Apple Community
According to this user tip, your battery health is absolutely ok after 190 charging cycles.
