A number of iPhone 14 and iPhone 14 Pro users are raising concerns reminiscent of the "batterygate" era. They're reporting that their phones, with less than a year of usage, are displaying higher levels of battery degradation than anticipated. In July, Sam Kohl from AppleTrack tweeted about his iPhone 14 Pro, which had already dropped to a maximum capacity of 90 percent. This rapid decline was more pronounced compared to his experience with previous iPhones. Many other users echoed similar issues in the thread.
Officially, Apple states that iPhone batteries should maintain "up to 80 percent of its original capacity at 500 complete charge cycles." As rumors swirl around the impending launch of the iPhone 15 series, it's speculated that these new devices will incorporate larger batteries, potentially up to 10-18 percent larger than the current models.
Furthermore, this situation becomes more challenging when considering the cost of replacing the battery on an iPhone 14 or iPhone 14 Pro once the one-year warranty has expired (unless covered by AppleCare or an extended service plan). Last year, the battery replacement cost increased by $30, from $69 for earlier models to $99. However, there's an option for DIY battery replacement if one prefers to avoid visiting an Apple Store or a third-party repair shop.
The battery health monitoring feature for iPhones was introduced in the same iOS 11.3 update that allowed users to toggle the performance throttling feature associated with "batterygate." Apple implemented this throttling as a measure to protect iPhones with aging batteries, which eventually led to significant legal settlements.