Apple’s foldable phone will be equipped with two silicon-carbon(Si-C) anode batteries, the battery cells use 3D stacking technology, and the capacity is 5000mAh or more, the supplier of this battery is ATL (exclusive supply), which is affiliated with Japan’s TDK.

Apple foldable screen new phone with Silicon-carbon Si-C anode battries
Mass production
According to analysis, Apple’s first official folding screen project will be launched in the third quarter of 2025, mass production is planned for the fourth quarter of 2026, and shipments are expected to be 3-5 million units in 2026.
Retail price prediction
This foldable iPhone will be a truely AI-driven phone, and the retail price is expected to be above $2,000 and $2,500. In terms of hardware specifications, Face ID may be missing due to thickness and internal space limitations, while Touch ID will return as a side button. It will also adopt a book-like design and a rear dual-lens setup, and will be 9-9.5 mm thick when folded.
Advantages of Si-C anode batteries
Compared with traditional graphite negative electrode batteries, silicon-carbon anode batteries have better cycle life and can withstand more charge and discharge cycles without obvious capacity decay.
At the same time, because silicon has a higher ion diffusion rate and higher capacity, silicon-carbon anode batteries have faster charging speeds and longer battery life.
Current situation
There are reports that Apple is likely to use silicon-carbon anode batteries in advance on this year’s iPhone 17 series, and the maximum capacity will exceed 5000 mAh.
Honor Magic 5 Pro is the first mobile phone to use silicon-carbon anode batteries. In addition, OPPO N5, Xiaomi MIX Fold 3, Huawei Mate XT and other mobile phones are currently equipped with silicon-carbon anode batteries.