Apple iPhone 18 Pro Max Battery Capacities Revealed in 3C Database Filings

By: Harsh Vardhan

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Updated on: 08-Jul-2026 08:00 AM

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New filings in China's 3C database have revealed updated battery capacities for the upcoming Apple iPhone 18 Pro and iPhone 18 Pro Max models. These filings provide more precise information than earlier reports and indicate significant increases in battery size for both eSIM and physical SIM tray versions.

Key Highlights

• iPhone 18 Pro Max eSIM model will have a 5,567 mAh battery.
• Physical SIM tray version of iPhone 18 Pro Max will feature a 5,391 mAh battery.
• iPhone 18 Pro eSIM and physical SIM models will have 4,288 mAh and 4,056 mAh batteries respectively.
• Battery capacities represent significant increases over previous iPhone Pro and Pro Max models.

Battery Capacity Details

The iPhone 18 Pro Max eSIM model will feature a 5,567 mAh battery. The version with a physical SIM tray will have a 5,391 mAh battery. This marks a notable increase from previous claims, which suggested the eSIM model would have a 5,425 mAh battery and the physical SIM tray version a 5,235 mAh battery.

For the iPhone 18 Pro, the eSIM model will come with a 4,288 mAh battery, while the physical SIM tray version will include a 4,056 mAh battery. These numbers also reflect an increase over the previous generation, where the eSIM and physical SIM models had 4,252 mAh and 3,998 mAh batteries, respectively.

Regional Variations and Market Impact

​Apple typically sells eSIM-only iPhones in the United States. In other regions, including China, Apple offers iPhones with a physical SIM tray. The new 3C database entries suggest that both versions will see increased battery capacities compared to their predecessors.

If the 3C database figures are accurate, the iPhone 18 Pro Max eSIM model will receive a 479 mAh increase in battery capacity over the previous model. The physical SIM tray version will see a 568 mAh increase. The iPhone 18 Pro eSIM model will gain 36 mAh, while the physical SIM tray version will gain 58 mAh compared to last year's models.

Comparison with Previous Models

The previous iPhone Pro Max eSIM model featured a 5,088 mAh battery, while the physical SIM tray version had a 4,823 mAh battery. The iPhone Pro eSIM model previously included a 4,252 mAh battery, and the physical SIM tray version had a 3,998 mAh battery. The new battery capacities represent a clear step up for both the Pro and Pro Max lines.

These increases could translate to longer battery life for users, depending on software optimization and hardware efficiency. Apple has not officially confirmed these figures, but the 3C database is a reliable source for pre-release hardware details in the Chinese market.