Apple has confirmed the exact battery capacities of the iPhone 18 Pro and iPhone 18 Pro Max, and the latter is the real winner here. The numbers come straight from Apple’s EU energy labels, which the company is legally required to publish alongside every iPhone listing in Europe.
Here’s how the two models compare to last year:
- iPhone 18 Pro: 4,056 mAh, up 1.7% from the iPhone 17 Pro’s 3,988 mAh
- iPhone 18 Pro Max: 5,391 mAh, up 11.7% from the iPhone 17 Pro Max’s 4,823 mAh
That’s a huge gap between the two models. The standard iPhone 18 Pro barely moves the needle on battery capacity, while the Pro Max gets one of its biggest generational jumps in years. If battery life is the deciding factor in your upgrade, the iPhone 18 Pro Max is clearly where Apple put its effort this time around.
Why the Numbers Differ by Region
These figures apply to the versions of the iPhone 18 Pro and iPhone 18 Pro Max that still ship with a physical SIM card tray, which covers the UK, the rest of Europe, and most countries outside a short eSIM-only list.
Apple is selling eSIM-only models again this year in the US, UAE, Saudi Arabia, Qatar, Kuwait, Oman, Bahrain, Canada, Mexico, Japan, Guam, and the US Virgin Islands. Since these models don’t need space for a SIM tray, Apple typically fits a slightly larger battery into that freed-up space. Apple hasn’t published the eSIM-only battery capacities yet, so if you’re in one of those markets, expect your actual battery to be a touch bigger than the numbers above.
What This Means in Real-World Use
A 1.7% bump on the iPhone 18 Pro is small enough that most people won’t notice it in daily use. It’s roughly in line with typical year-over-year efficiency gains rather than a meaningful hardware change.
The iPhone 18 Pro Max’s 11.7% increase is a different story. Combined with whatever efficiency improvements the new chip brings, that should translate into a noticeably longer day for anyone who leans on their phone heavily, think heavy camera use, gaming, or long stretches away from a charger.
If you’re deciding between the two, battery life is now one of the clearer reasons to go with the bigger Pro Max over the standard Pro this generation.
