Official EU Energy Label Confirms 4,883 mAh Battery Capacity for Apple’s Upcoming iPhone Duo

Apple has officially published a new European Union energy label regulatory filing that reveals crucial internal hardware specifications for its upcoming foldable smartphone, the iPhone Duo. According to the regulatory document published online by the company on Friday, October 18, 2026, the iPhone Duo contains a total combined battery capacity of 4,883 mAh. The publication of this official documentation provides concrete, verified proof of the physical power specifications driving Apple’s latest device form factor, offering consumers and technology analysts their first direct confirmation from Apple regarding the power system engineered for the new foldable hardware ahead of its commercial release.

The official regulatory disclosure aligns precisely with earlier industry reports and hardware leaks that surfaced several months prior to the filing. Specifically, the energy label document validates details from a July 10, 2026 report revealing that the iPhone Duo utilizes a split dual-cell battery architecture consisting of a 2,962 mAh primary cell and a 1,921 mAh secondary cell. When combined, these two individual internal power components yield the exact total capacity of 4,883 mAh now cited in Apple’s European Union energy label filing.

The dual-cell design choice reflects the unique structural and mechanical architecture required by foldable smartphones. Because foldable devices feature a central hinge mechanism that divides the internal enclosure into two distinct physical halves, hardware engineers are forced to distribute internal components across both sides of the chassis rather than relying on a single, continuous battery unit.