iPhone 18 Pro will have only a fractionally higher capacity battery

A new leak claims to have details of the battery capacity for the forthcoming iPhone 18 Pro , and while it continues the pattern of improving every year, this time Apple has managed only a minor increase. Mockup of a Dark Cherry iPhone 18 Pro - original image credit: Wesley Hilliard, recoloring by William Gallagher Back in February 2026 , a leak claimed to show that the iPhone 18 Pro Max would have longer battery life than its predecessor, but only by a small amount.