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iPhone Duo’s Battery Capacity Unveiled After Pre-Order Launch
By Drooid · · How we work
Core Event: EU Filing Discloses Dual-Cell Battery Size
Following the opening of pre-orders for the iPhone Duo, Apple submitted an EU regulatory document that details the device’s power-storage specifications. The filing shows the phone uses two battery cells—a 2,962 mAh unit and a 1,921 mAh unit—combined for a total capacity of 4,883 mAh. This figure places the Duo near the high-end of Apple’s recent lineup, though it does not surpass the largest models.
Battery Capacity Comparison Across Recent iPhones
The disclosed capacity can be contextualized against other current iPhone models (eSIM versions, which typically have larger cells than physical-SIM variants):
| Model | Battery Capacity | Relative Difference | Reported Video Playback* |
|---|---|---|---|
| iPhone 18 Pro Max | 5,567 mAh | +14 % vs. Duo | 45 hrs |
| iPhone 17 Pro Max | 5,088 mAh | +4 % | 39 hrs |
| iPhone Duo | 4,883 mAh | baseline | 44 hrs (outer display) / 31 hrs (inner display) |
| iPhone 16 Pro Max | 4,685 mAh | –4 % | 33 hrs |
| iPhone 18 Pro | 4,288 mAh | –12 % | 36 hrs |
| iPhone 17 Pro | 4,252 mAh | –13 % | 33 hrs |
| iPhone 17e | 4,005 mAh | –18 % | 26 hrs |
| iPhone 17 | 3,692 mAh | –24 % | 30 hrs |
| iPhone Air | 3,149 mAh | –36 % | 27 hrs |
*Apple’s own video-playback estimates are cited in the filing.
Why It Matters: User Experience With Dual Displays
The Duo’s sizable battery is the second-largest among the latest iPhone series, exceeded only by the two most recent Pro Max models. However, the device features an “inner” display that draws additional power when used frequently. Apple’s estimates indicate a drop from 44 hours of video playback on the outer screen to 31 hours when the inner screen is active, suggesting that real-world endurance will vary with display usage patterns.
Outlook for Prospective Buyers
Potential purchasers can now gauge the Duo’s endurance relative to other models. While the high capacity promises strong overall longevity, users who prioritize the inner display should anticipate reduced playback time. The disclosed figures provide a clearer basis for comparing the Duo against Apple’s broader portfolio as the device moves from pre-order to market release.