The iPhone Duo has what Apple is calling an "iPhone-first dual battery system" with one battery on each side of the device. The iPhone 18 Pro Max has the largest battery ever in an iPhone, and both ‌iPhone 18 Pro‌ models last for longer than the iPhone 17 Pro models. Key points and original sources are listed below.

• The iPhone Duo has what Apple is calling an "iPhone-first dual battery system" with one battery on each side of the device. Apple optimized physical space for battery capacity to make sure that the battery lasts as long as possible. When using the larger 7.6-i...S1

• The iPhone 18 Pro Max has the largest battery ever in an iPhone, and both ‌iPhone 18 Pro‌ models last for longer than the iPhone 17 Pro models. iPhone 18 Pro Battery Typical use - Up to 24 hours Video playback - Up to 36 hours Streaming video - Up to 33 hours...S2

• Apple has just announced the new flagship iPhone lineup, featuring iPhone 18 Pro and iPhone Duo. One of the biggest improvements is battery life. In fact, Apple says this generation represents the biggest jump in battery life iPhone history ever. So let’s brea...S3

• Finally, a standard iPhone Pro model with the battery we're used to on a Pro Max.S4