Apple Confirms iPhone Duo Battery at 4,883 mAh in EU Filing

Apple has disclosed the iPhone Duo battery capacity in an EU energy label published on Friday, listing a total of 4,883 mAh. The document is the first official confirmation of the figure, which had previously circulated through an unverified leak.

Two cells add up to the total

The 4,883 mAh total is the sum of two internal battery cells. Earlier leaked information put the individual cells at 2,962 mAh and 1,921 mAh, and those numbers align exactly with the official label. Apple did not break down the capacity in its filing; the match with the prior leak is what connects the two data points.

Why the number holds worldwide

The iPhone Duo is an eSIM-only device. Because there is no physical SIM tray variant, Apple does not produce a separate regional model with a different internal layout. That removes the usual source of battery-size variation between markets, so the 4,883 mAh figure applies to every iPhone Duo sold, not just units shipped in the EU.

How it stacks up against the iPhone 18 Pro models

For context, repair specialist iFixit has measured the batteries in two other eSIM-only iPhones. The iPhone 18 Pro came in at 4,288 mAh, while the iPhone 18 Pro Max measured 5,567 mAh. Both figures come from iFixit’s teardown work rather than an Apple filing.

Placed alongside those numbers, the iPhone Duo sits above the 18 Pro and below the 18 Pro Max. The comparison is not perfectly like-for-like, since the 18 Pro figures come from physical measurement and the Duo figure from a regulatory document, but the gap is large enough to be meaningful.

What the label does and does not say

The EU energy label is an official filing, which gives the 4,883 mAh number more weight than a supply-chain rumor. It does not, however, answer every question about the phone’s endurance. Battery life in hours, charging speed and the rest of the iPhone Duo’s specifications remain undisclosed, as do its release date, pricing and the markets where it will be sold.

What the filing does settle is the capacity question. After the earlier leak, the iPhone Duo battery capacity is now confirmed at 4,883 mAh, split across two cells and identical in every region.