The next iteration of iPhones is just around the corner, with an official announcement expected sometime this fall. With the Worldwide Developers Conference now behind us, we’re most looking forward to the announcement of the iPhone 17.

There are plenty of rumors about what the next iPhone will look like and what sort of specs it may have. One of the more popular talking points for any new smartphone release is battery life, and the new iPhone is no exception. A rumored iPhone 17 Air with a thinner design has raised the question of whether a slimmer iPhone would have to sacrifice battery life.

Regardless of the model type, battery life is a concern across the board. After all, you can’t use your new tech if the battery drains too fast and doesn’t last more than a few hours. We’ve sorted through all the rumors and leaks when it comes to the battery for the iPhone 17. Let’s break it down.

Battery size for the next iPhone

Current iPhones utilize a lithium-ion battery, which is less malleable and not really conducive to being used in a slimmer model, like the rumored iPhone 17 Air. So, if they were to shrink the lithium-ion battery to fit a skinnier frame, it would likely have less capacity. However, Apple may be adding a silicon-anode battery to the new slimmer iPhone, according to AppleInsider.

Compared with graphite-based anodes, common in lithium-ion batteries, silicon anodes can hold more lithium ions, allowing them to store more energy. In theory, that would mean a more compact silicon-anode battery wouldn’t sacrifice power. The iPhone may even charge faster than previous iterations as a result. As for the rumored iPhone 17 Pro Max, according to 9to5mac, it’s expected to have a slightly larger battery than the iPhone 16 Max Pro.

AI-powered battery management

The next iPhones (and the current models after iOS 26 rolls out) will have AI-powered adaptive battery energy management starting this fall, we learned at WWDC. Part of Apple Intelligence, the company will utilize AI to monitor how you use your device and adjust performance and energy consumption settings accordingly, aiming to extend the phone’s battery life. Think of Adaptive Power as the first step toward extending your iPhone’s battery life and Low Power mode as the last step of doing the same.

Another piece of new hardware that’ll likely impact battery efficiency is the rumored A19 processing chip. The iPhone 17 base and Air will likely get the A18 chip, which is the same chip that the iPhone 16 uses. However, according to Apple analyst Jeff Pu, the rumored iPhone 17 Pro and iPhone 17 Pro Max are set to include the A19 chip, which would likely come equipped with better optimization, which in turn could impact how long the battery will last on the rumored iPhone, and how efficiently it will run.

How accurate are iPhone rumors?

Until Apple officially releases its new phone, speculation on the iPhone 17 is simply educated guesswork. While most rumors come from insider knowledge or are leaked from the teams working on these products, until Apple says otherwise, they remain rumors.