It's like Apple finally listened to what a majority of phone owners have been asking for: longer battery life. The iPhone 17 Pro Max delivers "the best battery life of any phone that CNET has ever tested" according to Managing Editor Patrick Holland in his review, but it's not just due to a physically larger power unit. A new feature in iOS 26 called Adaptive Power contributes to extended battery life in the latest iPhone 17 and iPhone Air models, as well as several earlier Apple iPhones.
Currently, the iPhone uses as much power as it needs to perform its tasks. You can extend the battery life by doing a number of things, such as decreasing screen brightness and turning off the always-on display. Or, if your battery level is starting to get dire, you can activate Low Power Mode, which reduces background activity like fetching mail and downloading data in addition to those screen adjustments. Low Power Mode also kicks in automatically when the battery level reaches 20%.
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If Low Power Mode is the hammer that knocks down power consumption, Adaptive Power is the scalpel that intelligently trims energy savings here and there as needed. Based on Apple's description that accompanies the control, the savings will be felt mostly in power-hungry situations such as recording videos, editing photos or perhaps even playing games:
"When your battery usage is higher than usual, iPhone can extend your battery life by making performance adjustments, such as lowering display brightness, allowing some activities to take longer, or turning on Low Power Mode at 20%."
Apple says Adaptive Power takes about a week to analyze your usage behavior before it begins actively working. It works in the background without needing any management on your part. The iPhone user guide describes it as follows: "It uses on-device intelligence to predict when you'll need extra battery power based on your recent usage patterns, then makes performance adjustments to help your battery last longer."
Watch this: The iPhone 17 Pro Max Has Incredible Battery Life 12:10
Which iPhone models can use Adaptive Power?
The feature uses AI to monitor and choose when its power-saving measures should be activated, so that means only phones compatible with Apple Intelligence get the feature. These are the models that have the option:
• iPhone 17
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