A new support document from Apple says the iPhone 11, iPhone 11 Pro, and the iPhone 11 Pro Max feature a new dynamic power management system to reduce “performance impacts” as the batteries inside these phones age.
The new power management system from Apple makes use of both software and hardware to increase the lifespan of the iPhone 11 or iPhone 11 Pro’s battery as well as ensure that its performance does not take a hit due to their aging. This system is more advanced than the power management Apple has used in its previous devices.
Below is how Apple explains this feature
The new built-in software and hardware system is automatic, always-on, and works to provide the best possible performance as battery aging occurs over time. iPhone 11, iPhone 11 Pro, and iPhone 11 Pro Max power needs are dynamically monitored, and performance is managed so that it can address these needs in real time. The system is more advanced than previous iPhone battery and power management systems and allows your iPhone to reduce performance impacts from battery aging.
To increase the battery lifespan of iPhones, Apple has also added a new Optimized Charging feature in iOS 13.
Apple had a tendency of throttling the performance of iPhones as their batteries aged. This was the primary reason as to why many iPhones started feeling slow as they became old. The company was doing this due to the degrading batteries inside the phones but was not upfront about it to customers. Once this was revealed to the public, Apple was subjected to a lot of criticism. This led the company to announce a discounted $29 battery replacement program for the entirey of 2018 along with adding an option in iOS to show the battery health.