When it comes to iPhones, we've come a long way from the days when users were pegged as "Wallhuggers," forever in search of an outlet to rescue their dwindling battery life. The iPhone's battery evolution has been a remarkable journey, and ever since the iPhone 11 series, Apple has consistently delivered devices with impressive battery capacities that often outshine the competition in rigorous battery tests. While Apple usually mentions that their latest iPhones provide "all-day" battery life, a recent discovery in a Chinese regulatory database sheds more light on the battery capacities of the iPhone 15 series.

MySmartPrice recently unearthed fascinating data regarding the battery capacities and wattage support for all four iPhone 15 models. Notably, the iPhone 15 Pro Max emerges as the clear winner, boasting the largest battery capacity ever seen in an iPhone. 

iPhone 15: 3,349mAh, 12.981Wh, increase 2.1% from iPhone 14
iPhone 15 Plus: 4,383mAh, 16.950Wh, increase 1.3% from iPhone 14 Plus
iPhone 15 Pro: 3,274mAh, 12.70Wh, increase 2.3% from iPhone 14 Pro
iPhone 15 Pro Max: 4,422mAh, 17.109Wh, increase 2.3% from iPhone 14 Pro Max

Apple has also provided estimated video playback times for the iPhone 15 series:

iPhone 15: 20 hours
iPhone 15 Plus: 25 hours
iPhone 15 Pro: 23 hours
iPhone 15 Pro Max: 29 hours

One more exciting tidbit to note is that the iPhone 15 Pro and iPhone 15 Pro Max are likely to see further improvements in battery life, courtesy of the cutting-edge 3nm A17 Pro chip. Currently, the starting price of iPhone 15 Pro Max 256GB is $1,199