Apple’s first foldable smartphone, the iPhone Duo, features a 4,883mAh battery, according to an official European Union energy label published ahead of the device’s retail launch. The document also reveals battery endurance and durability ratings, giving consumers a clearer picture of what to expect from the new device.
iPhone Duo Packs a 4,883mAh Dual-Battery System
The iPhone Duo uses two battery cells with capacities of 2,962mAh and 1,921mAh, bringing the combined capacity to 4,883mAh. The configuration allows Apple to distribute the batteries across the two halves of the foldable smartphone.
The capacity was previously reported in leaks, but the official European product information now confirms the figure. Since the iPhone Duo is an eSIM-only device, the battery capacity is expected to remain consistent across markets.
Battery Endurance Rated at More Than 51 Hours
According to the EU energy label, the iPhone Duo achieves a rated battery endurance of 51 hours and 30 minutes per charge cycle under the applicable standardised testing procedure.
The device is also rated to retain its battery performance for at least 1,000 charge cycles under the specified conditions. Actual battery life will vary depending on usage, screen brightness, network conditions and the applications running on the phone.
Apple separately estimates up to 44 hours of video playback when using the outer display, compared with up to 31 hours when using the larger inner screen.
How Does It Compare With Other iPhones?
With a combined capacity of 4,883mAh, the iPhone Duo sits between the iPhone 18 Pro and iPhone 18 Pro Max in terms of battery capacity.
The eSIM-only iPhone 18 Pro has a 4,288mAh battery, while the iPhone 18 Pro Max comes with a larger 5,567mAh unit. However, battery capacity alone does not determine real-world endurance, particularly on a foldable device with two displays.
What This Means for Buyers
The confirmed battery specifications provide useful insight into Apple’s approach to power management in its first foldable iPhone. Splitting the battery into two cells allows the company to accommodate the device’s folding design while maintaining a substantial combined capacity.
Nevertheless, users who frequently rely on the larger internal display may experience different battery life compared with those who primarily use the external screen.
The bottom line: The iPhone Duo officially has a 4,883mAh dual-cell battery, with EU documentation listing 51 hours and 30 minutes of rated endurance per cycle. Real-world performance will become clearer as more users test the device.
Source: <Link url=”https://www.gsmarena.com/iphone_duos_battery_capacity_officially_revealed-news-75102.php” title=”GSMArena”/> and <Link url=”https://www.apple.com/iphone-duo/specs/” title=”Apple’s official specifications”/>.
