iPhone 18 Pro Max Battery Capacity Leak Suggests 5,567 mAh for eSIM Model

By: Harsh Vardhan

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Updated on: 11-Aug-2026 01:00 PM

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New leaks from China reveal the iPhone 18 Pro Max will feature a 5,391 mAh battery for the physical SIM model. This information comes from images showing the actual battery, confirming earlier rumors. The eSIM-only variant is expected to have a 5,567 mAh battery, according to the same source.

Key Highlights

• Leaked images show iPhone 18 Pro Max physical SIM model has a 5,391 mAh battery.
• eSIM-only iPhone 18 Pro Max expected to feature a 5,567 mAh battery.
• iPhone 18 Pro eSIM model will have a 4,288 mAh battery, physical SIM version 4,056 mAh.
• Battery capacity increases are modest compared to previous iPhone models.

Battery Capacity Details

The leaked images provide clarity on the battery sizes for the upcoming iPhone 18 Pro Max. The physical SIM version, likely destined for the Chinese market, will have a 5,391 mAh battery. The eSIM-only model, expected in other regions, will reportedly feature a 5,567 mAh battery. These numbers align with previous leaks, which suggested similar capacities.

The iPhone 18 Pro will also see a slight increase in battery capacity. The eSIM-only version will have a 4,288 mAh battery, while the physical SIM model will come with a 4,056 mAh battery. These figures indicate only a 1% to 2% increase in capacity compared to the previous generation.

Regional Variations and Implications

Apple typically offers different iPhone models based on regional requirements. In China, where eSIM adoption is limited, the iPhone 18 Pro Max will include a physical SIM slot and a 5,391 mAh battery. In other markets, Apple is expected to continue its shift toward eSIM-only devices, with a slightly larger 5,567 mAh battery for the iPhone 18 Pro Max.

The iPhone 18 Pro models will also follow this pattern. The eSIM-only variant will have a 4,288 mAh battery, while the physical SIM version will feature a 4,056 mAh battery. These changes reflect Apple's ongoing adjustments to meet regional connectivity needs and regulatory requirements.

Comparison to Previous Models

The increase in battery capacity for the iPhone 18 Pro and Pro Max is modest. For the iPhone 18 Pro, the boost is around 1% to 2% compared to its predecessor. The iPhone 18 Pro Max sees a similar incremental improvement. These changes may offer slightly longer battery life, but users should not expect a dramatic difference from the previous generation.

Apple has not officially confirmed these battery capacities. However, the consistency of the leaks and the supporting images lend credibility to the reported figures. More details are likely to emerge as the official launch approaches.