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Story summary
- Apple submitted an EU regulatory filing that discloses the iPhone Duo’s 4883 mAh battery capacity.
- The Duo achieves 4883 mAh by pairing a 2962 mAh cell with a 1921 mAh cell.
- Its capacity sits between the iPhone 18 Pro’s 4288 mAh and the iPhone 18 Pro Max’s 5567 mAh.
- Apple rates 44 hours playback on the outer display and 31 hours on the inner display.
- Frequent inner-display use shortens battery life compared with outer-display use despite the large capacity.