Apple has confirmed the internal hardware changes for the iPhone 18 Pro series, and the shift matters because it directly impacts how long the devices last on a single charge. The company used European Union energy labels to reveal that both the standard Pro and the larger Pro Max models now pack more power than their predecessors. Buyers who prioritize battery endurance will see a tangible upgrade in daily usage time without needing to change their charging habits.
EU energy labels reveal larger cells and heavier chassis for both models
The new devices retain the physical footprint of last year's models, maintaining an 8.75 millimeter thickness for both the iPhone 18 Pro and the iPhone 18 Pro Max. However, the internal component density has increased, pushing the weight up to 211 grams for the smaller model and 249 grams for the larger flagship. Apple attributes part of this efficiency gain to the new Apple A20 Pro ARM chip, which helps manage power consumption more effectively.
Spec comparison
| Spec | iPhone 18 Pro | iPhone 18 Pro Max |
|---|---|---|
| Battery Capacity | 4,056 mAh | 5,391 mAh |
| Video Playback | 34 hours | 43 hours |
| Thickness | 8.75 mm | 8.75 mm |
| Weight | 211 grams | 249 grams |
European energy documentation lists the iPhone 18 Pro battery capacity at 4,056 mAh, which represents a 1.7 percent increase over the iPhone 17 Pro. The iPhone 18 Pro Max sees a much more substantial jump, with its battery capacity reaching 5,391 mAh, a 11.7 percent increase over the previous generation. This larger cell in the Pro Max model supports the device's extended runtime claims and helps balance the weight increase from the denser internals.
Apple claims that these hardware upgrades result in a 10 percent increase in video playback battery life for the iPhone 18 Pro and up to a 16 percent increase for the iPhone 18 Pro Max. In the United States, the switch to dual eSIMs removes the physical SIM tray, and the company likely uses that saved space to accommodate the slightly larger battery cells. We looked at the last iPhone 18 Pro update earlier, and several of the same balance and stability themes came up in this hardware revision.
The confirmed specifications show that Apple is focusing on internal efficiency and battery density rather than altering the external design of the iPhone 18 Pro line. The devices ship with the A20 Pro chip and increased mAh ratings, which should extend usage time for power users. These changes define the current hardware baseline for the Pro series ahead of wider market availability.
Source: NotebookCheck
