Leaked Battery Specs Suggest Apple's Foldable iPhone Ultra Targets 5,000 mAh
Supplier filings reveal a dual-cell battery configuration for Apple's rumored foldable, placing it in direct competition with Samsung's Z Fold 8.
Apple is preparing to enter the foldable market with a premium device dubbed the iPhone Ultra, which may feature a dual-cell battery totaling 4,883 mAh. The leak suggests the company is prioritizing a balanced power profile over the massive capacities seen in some early rumors.
According to supplier registrations, the iPhone Ultra will utilize two separate battery cells with nominal capacities of 1,921 mAh and 2,962 mAh. While the combined nominal total is 4,883 mAh, industry sources indicate this figure represents the minimum rated capacity, suggesting the device will likely be marketed in the 5,000 mAh range. The iPhone Ultra is rumored to be unveiled this September, launching alongside the iPhone 18 Pro series.
The Foldable Power Struggle
Apple has been linked to foldable research for several years, with the "Ultra" branding signaling a new tier above the Pro Max. This strategic move targets the high-end foldable segment currently led by Samsung and Google. The decision to settle on a ~4,900 mAh capacity indicates a design philosophy that balances raw power with device thinness and structural efficiency, avoiding the bulk associated with larger cells.
Market Implications
Battery endurance remains a critical pain point for foldable hardware because the hinge mechanism forces engineers to split cells across two halves of the chassis. By targeting a capacity comparable to the rumored 4,800 mAh battery of the Samsung Galaxy Z Fold 8, Apple is positioning itself to compete directly on specs. However, the company may face criticism for a conservative approach if the device carries a premium price tag exceeding $2,000.
Despite the similar numbers, Apple typically relies on vertical integration to gain an edge. The tight coupling of iOS and A-series silicon often allows Apple devices to achieve superior real-world endurance compared to Android competitors with larger physical batteries. As Tom's Guide noted, Apple is unlikely to scrimp on the battery despite the challenges of an ultra-thin display.
What to Watch
While the battery registrations provide a concrete look at the power source, other hardware specifications remain unconfirmed. The industry is waiting to see if Apple will introduce new efficiency breakthroughs in its next-generation chips to offset the power demands of a larger foldable screen. Confirmation of the final marketing capacity and the official reveal in September will determine if Apple has truly closed the gap with Samsung's foldable dominance.