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iPhone 15 Adds New 80% Battery Charging Limit to Extend Battery Health

  • All iPhone 15 models feature a new setting to limit charging to 80% to improve battery health. The 80% limit prevents charging past that point.

  • The 80% limit is separate from Optimized Battery Charging, which learns routine and delays full charges.

  • There are 3 charging options Optimized, 80% Limit, and None. The 80% limit reduces time batteries spend fully charged.

  • The new 80% limit setting was previously discovered in iOS 17 code by Steve Moser.

  • Apple says iPhone 15 models have the same battery life as iPhone 14 models. The new iPhones launch on Friday.

macrumors.com
Relevant topic timeline:
The iPhone 15 Pro Max is expected to have a smaller battery capacity than previously rumored, but the use of a 3nm fabrication process and stacked battery technology could still improve battery life by up to 20%.
The upcoming iPhone 15 Pro and iPhone 15 Pro Max will have the same storage capacity options as the iPhone 14 Pro models, with increased RAM for improved performance and a potential price increase for the Pro Max model.
Apple is set to release the iPhone 15 with incremental improvements including a lighter design, better chip, battery life, camera, and a USB-C charging cable, but the smartphone market is slowing down as people hold on to their devices longer and there is less incentive to upgrade.
Apple's newly launched iPhone 15 series does not come with improved battery life compared to the previous iPhone 14 series, suggesting that the battery capacities may have remained the same or potentially even decreased.
Popular third-party Apple accessory companies have introduced new accessories for the upcoming iPhone 15 and iPhone 15 Pro, including discounts on cases, charging accessories, and more.
The iPhone 15 Pro is a significant upgrade over the iPhone 14 Pro, offering a titanium design, USB-C port, Action button, and improved camera capabilities, making it a worthy consideration for users looking to upgrade.
The iPhone 15 series includes four models - iPhone 15, iPhone 15 Plus, iPhone 15 Pro, and iPhone 15 Pro Max - with varying colors, design, camera features, and processors, while all models now use USB-C for charging.
The Chinese regulatory database reveals that the iPhone 15 has a 3,349mAh battery, while the iPhone 15 Pro has a 3,274mAh battery, and Apple's official battery life estimates for the iPhone 15 models are the same as the iPhone 14 models.
The iPhone 15 and iPhone 15 Pro can now charge from 0 to 100% in under two hours with a USB-C cable, and the USB-C port allows for significantly more power output to accessories, expanding the possibilities for iPhone accessories.
The iPhone 15 Plus has surpassed the Pro Max in battery life, lasting over 13 hours of screen on time and setting a new record for the longest iPhone battery life, according to a battery test conducted by Mrwhosetheboss.
Apple iPhone 15 Pro users are experiencing charging issues with USB-C, as the phone ends up charging connected devices instead of being charged itself, highlighting the inconsistencies in compliance with USB-C standards among manufacturers.
The iPhone 15 Pro Max features improved camera capabilities, including additional framing options, enhanced video quality, better low-light performance, and the ability to add a portrait mode blur effect after taking a photo, making it Apple's best camera system to date.
Apple may be using cheaper batteries with lower charge cycle counts in the iPhone 14 and 15 series, which could explain the reported lower battery capacity in these devices after less than a year of ownership.
The 20W power adapter from Apple is found to be a better fast charger for the iPhone 15 Pro Max compared to the 30W power adapter, despite a 10-minute difference in charging time, as shown by a battery charge test video.