Apple publishes an EU energy label for its upcoming foldable iPhone Duo, officially listing a total battery capacity of 4,883mAh. Multiple outlets report that the figure reflects a dual-cell design, with the battery split into two parts, which helps explain how the device can reach a comparatively high overall capacity.
The energy label also includes endurance and retention information. GSMArena reports a rated battery endurance of 51 hours and 30 minutes per cycle, along with a performance-retention rating for at least 1,000 charge cycles under default conditions. Other coverage notes earlier leaks that suggested two cell capacities totaling 4,883mAh, which the EU document appears to confirm.
Outlets further place the number in context by comparing it with other iPhones. 9to5Mac focuses on how the 4,883mAh capacity stacks up versus existing models, while MacRumors highlights comparisons such as the reported eSIM-only iPhone 18 Pro (4,288mAh) and iPhone 18 Pro Max (5,567mAh).
