Just ahead of Apple’s iPhone 17 series unveiling, a leak from a Chinese regulatory database appears to reveal battery capacities for multiple models. The figures — shared on X by ShrimpApplePro — suggest some iPhone 17 variants will ship with a physical SIM tray in certain markets, while others will be eSIM-only. That design choice can slightly affect internal space and thus battery capacity.

Battery Capacities for the iPhone 17 Series

Note: Models with a physical SIM tray show slightly lower capacities than eSIM-only variants due to space constraints.

ModelWith SIM Card TrayWithout SIM Card TrayYoY Increase (Maximum)
iPhone 17—3,692 mAh+3.7%
iPhone 17 Air3,036 mAh3,149 mAh—
iPhone 17 Pro3,988 mAh4,252 mAh+18.7%
iPhone 17 Pro Max4,823 mAh5,088 mAh+8.6%

Reference: iPhone 16 Battery Capacities

ModelBattery Capacity
iPhone 163,561 mAh
iPhone 16 Plus4,674 mAh
iPhone 16 Pro3,582 mAh
iPhone 16 Pro Max4,685 mAh

Key Takeaways

  • iPhone 17 Pro gets the largest boost. The eSIM variant is listed at 4,252 mAh — nearly a 19% increase over the iPhone 16 Pro.
  • iPhone 17 Pro Max may cross 5,000 mAh. At 5,088 mAh (eSIM variant), it would be about 8% larger than the iPhone 16 Pro Max.
  • iPhone 17 Air stays ultra-thin. Around ~3,000 mAh fits its slim profile; Apple reportedly plans an official battery case for it.
  • SIM tray vs eSIM affects capacity. Where eSIM adoption is limited, some regions may still receive a SIM-tray variant with slightly smaller battery capacity.

What This Means for Users

Expect longer battery life on the Pro models — especially the iPhone 17 Pro. The Pro Max moving beyond 5,000 mAh narrows the raw capacity gap with large Android flagships. The iPhone 17 Air will likely rely on efficiency improvements (such as a power-efficient modem) and accessories to reach full-day use.