Battery Replacement
At what Maximum Capacity percentage should I consider replacing the battery in my 11 Pro Max?
iPhone 11 Pro Max
According to: iPhone Battery and Performance - Apple Support
"A normal battery is designed to retain up to 80% of its original capacity at 500 complete charge cycles when operating under normal conditions. The one-year warranty includes service coverage for a defective battery. If it is out of warranty, Apple offers battery service for a charge. Learn more about charge cycles."