Foldable iPhone Battery Capacity Details Emerge from Supplier
New details suggest Apple's first foldable iPhone could feature a dual-cell battery system with a combined capacity nearing 5,000mAh. The reported specifications place it competitively among current foldable devices.
Details regarding the battery capacity for Apple's anticipated foldable iPhone have surfaced, reportedly registered by a key supplier. A prominent Chinese leaker, Digital Chat Station, shared on Weibo that two new battery cells have been registered, with rated capacities of 1,921mAh and 2,962mAh. These are believed to be for the company's first-ever foldable smartphone, potentially dubbed the iPhone Ultra. The combined minimum rated capacity of these dual cells would reach 4,883mAh.
The supply chain is also forecasting a total battery capacity that could range between 4,800mAh and 5,000mAh, though this figure still awaits further confirmation. This dual-cell configuration aligns with the design prevalent in existing book-style foldable smartphones, which typically distribute the battery across the device's two folding halves to optimize space and weight distribution. Such a capacity would position the device competitively within the current foldable market. For comparison, the Google Pixel 10 Pro Fold boasts a total battery capacity of 5,015mAh, and the Samsung Galaxy Z Fold 7 has a 4,400mAh capacity. For context within Apple's own lineup, the iPhone 18 Pro and iPhone 18 Pro Max are projected to feature batteries of 4,288mAh and 5,567mAh, respectively.
Power Efficiency Focus
This latest leak appears to offer a more defined picture than earlier rumors. An earlier report had suggested Apple was testing a substantially larger battery for its foldable device, ranging from 5,400mAh to 5,800mAh. However, that specific report pertained to an engineering test configuration, indicating that Apple may have refined its design or that the initial information was not indicative of the final product. A separate rumor from March 2025 emphasized that Apple is prioritizing enhanced power efficiency and component slimming for its foldable iPhone, with battery longevity identified as a critical objective for the device's success. Apple analyst Ming-Chi Kuo has also indicated that the company intends to utilize high-density battery cells, a move that would support both slimmer designs and improved energy storage.
The development of a foldable iPhone has been a subject of intense speculation for years, with Apple reportedly experimenting with various form factors and component integrations. The successful implementation of a robust battery system is crucial for user adoption and satisfaction, especially given the increased power demands of larger, flexible displays. The rumored capacity suggests Apple is aiming for a full day's usage, a common benchmark for premium smartphone devices. The company's meticulous approach to product design and performance optimization will be heavily tested with this new category of smartphone. The successful launch of a foldable iPhone could significantly disrupt the existing mobile market and set new standards for foldable technology, provided it delivers on user expectations for both innovative design and reliable performance.