Apple’s iPhone 18 Pro Max: A Leap in Battery Capacity
The upcoming iPhone 18 Pro Max is poised to feature a formidable 5,567mAh battery, a significant enhancement of approximately 10% over its predecessor. In contrast, the smaller iPhone 18 Pro exhibits nearly negligible upgrades.
Highlights:
- Recent leaks from Chinese certification documents reveal a 5,567mAh battery for U.S. iPhone 18 Pro Max models, contrasted with a 4,288mAh battery in the iPhone 18 Pro.
- This increase in the Pro Max represents a near 10% improvement year-over-year, while the smaller Pro registers a modest increase of only 36mAh.
- Discrepancies exist regarding a variable aperture main camera, which may be exclusive to the larger model, as sources provide conflicting information.
Battery Capacity Disparity Revealed
Documentation from Chinese regulators, accessed last month, indicated the battery specifications, with insider Digital Chat Station identifying the entries within the 3C certification database utilized for device approvals.
The same documentation disclosed a 4,288mAh capacity for the iPhone 18 Pro in its U.S. iteration, a mere increase of 36mAh compared to the existing iPhone 17 Pro.
Subsequent images of what has been identified as the Pro Max battery surfaced on a Korean blog, displaying a rating of 5,391mAh, aligning with figures for Chinese variants of the device, which continue to feature a physical SIM tray.
Comparative analyses place the increase for Chinese models at approximately 12%, whereas American units, which have not included a SIM tray since the iPhone 14 era, exhibit an estimated hike of 9.4%.
Apple has not publicly commented on these figures, which it typically refrains from disclosing. Each model is expected to be powered by the A20 Pro chip, crafted using a 2nm manufacturing process, and will utilize the third-generation C2 modem.
Additionally, rumored LTPO+ display technology promises to further enhance energy efficiency, indicating that raw battery capacity alone will not determine the longevity of either device in practical usage.
Potential Camera Innovations Favoring Pro Max
This fall, the camera systems may also delineate a sharper contrast between the two models. Mark Gurman has hailed the forthcoming Pro models as an unprecedented advancement in camera technology, primarily due to the introduction of a variable aperture main lens.
One leaker previously asserted that the variable aperture feature might be reserved solely for the Pro Max; nevertheless, subsequent sources have not corroborated this statement.
Current whispers, however, suggest that both Pro models will feature a 48-megapixel main camera equipped with this aperture adjustment, granting users enhanced control over depth of field.
Anticipated enhancements include a wider telephoto aperture alongside exclusive software features tailored for Pro users.
Contextualizing Pro Max Battery Enhancements
Apple is likely to unveil these devices in early September, with the reported advantage of the larger battery leading to a thicker and more substantial design. Commercial availability is expected in the latter part of the month.
While the Pro Max’s battery improvements may seem noteworthy, they pale in comparison to historical increments.

The iPhone 16 Pro Max in China featured a 4,685mAh battery, with the iPhone 17 Pro Max contributing an additional 138mAh the following year.
The projected increase of 568mAh this year would represent approximately four times that previous increment, marking the largest single-year escalation documented for this model series.
Source link: Yellow.com.




