Apple’s latest regulatory filings have revealed the battery capacities of the iPhone 18 Pro and iPhone 18 Pro Max, offering a clearer look at how the new models compare with their predecessors. The documents show that both flagship iPhones have larger rated batteries than the iPhone 17 Pro and iPhone 17 Pro Max. The filings also provide battery endurance figures, energy ratings, drop resistance scores and repairability ratings.
The information comes shortly after Apple introduced the iPhone 18 Pro lineup at its “Surprise and Shine” event, alongside its first foldable iPhone Duo. Both Pro models use the same chipset, while the Pro Max gets a larger battery aimed at longer endurance.
Capacity
The iPhone 18 Pro and iPhone 18 Pro Max are listed in the European Product Registry for Energy Labelling (EPREL) database. The regulatory records identify the iPhone 18 Pro as model A3714 and the iPhone 18 Pro Max as A371.
According to the filings, the iPhone 18 Pro has a rated battery capacity of 4,056mAh. Its battery endurance is listed at 52 hours per cycle, based on a full 100-to-0 percent discharge.
The iPhone 18 Pro Max has a considerably larger 5,391mAh rated battery. It is listed with 62 hours of battery endurance per cycle.
These figures represent an increase over the corresponding iPhone 17 Pro models.
| Model | Rated Battery | Endurance Per Cycle |
|---|---|---|
| iPhone 18 Pro | 4,056mAh | 52 hours |
| iPhone 18 Pro Max | 5,391mAh | 62 hours |
| iPhone 17 Pro | 3,988mAh | 47 hours |
| iPhone 17 Pro Max | 4,823mAh | 53 hours |
Comparison
The iPhone 18 Pro’s rated capacity is 68mAh higher than the iPhone 17 Pro. While that is a relatively modest increase, its listed cycle endurance rises from 47 hours to 52 hours.
The bigger change comes with the iPhone 18 Pro Max. Its 5,391mAh battery is 568mAh larger than the 4,823mAh unit listed for the iPhone 17 Pro Max. Its regulatory endurance also increases from 53 hours to 62 hours.
This suggests that Apple has placed greater emphasis on battery capacity in the new Pro models. However, battery capacity alone does not determine everyday battery life. The display, processor efficiency, software optimisation, connectivity and camera usage can all affect how long a phone lasts between charges.
Ratings
The EPREL listings also provide several other details about the phones. Both the iPhone 18 Pro and iPhone 18 Pro Max receive an “A” energy rating.
The devices are rated “B” for drop endurance and “C” for repairability. They are also listed with an IP68 rating for dust and water resistance.
These ratings provide additional information beyond the headline battery figures. In particular, the repairability rating indicates that while the phones meet Apple’s design and durability standards, servicing the devices remains a separate consideration for buyers.
Playback
Apple’s own battery claims provide another way to compare the two models.
The company says the iPhone 18 Pro can deliver up to 36 hours of video playback on a single charge. The iPhone 18 Pro Max is claimed to offer up to 45 hours.
There is an important detail behind these figures. Apple’s quoted playback numbers apply to eSIM-only versions sold in the US and selected global markets. Models equipped with a physical SIM tray use smaller batteries.
That difference means battery capacity can vary depending on the market and specific version of the phone. Buyers comparing international models should therefore check the exact configuration rather than assuming every iPhone 18 Pro has the same battery.
Models
The battery information also highlights a broader difference between Apple’s regional iPhone configurations. The eSIM-only versions can accommodate larger batteries because they do not require physical space for a SIM tray.
For consumers, this means two otherwise similar iPhone models can have different battery capacities depending on where they are sold. The distinction is particularly relevant when comparing US models with versions offered in markets where physical SIM support remains available.
The iPhone 18 Pro and Pro Max otherwise share the same core chipset, but the Pro Max remains the more battery-focused option because of its larger physical size and substantially higher battery capacity.
Outlook
The regulatory filing gives buyers a more detailed picture of Apple’s latest Pro phones than the headline specifications alone. The iPhone 18 Pro gains a smaller battery increase, while the Pro Max sees a much more substantial jump in capacity. Both models also post higher endurance figures than their iPhone 17 Pro counterparts.
For buyers who prioritise battery life, the iPhone 18 Pro Max appears to have the stronger advantage on paper. Still, real-world results will depend on usage and regional model configuration. The difference between physical-SIM and eSIM-only versions is also important when comparing battery specifications across markets.
