During the iPhone 15 certification process in China, Apple disclosed the battery specifications for all new models, even though the official presentation did not spotlight this detail. This gap in the keynote notes was later filled by coverage from MacRumors, which highlighted the newly revealed figures.
Thanks to an early leak, it appears that every iPhone 15 model now ships with greater battery capacity than its predecessors. On average, the increase is modest, roughly two to three percent across the lineup, signaling incremental life improvements without a dramatic leap in endurance.
leaked documents circulating in the media, with a notable impact from sources in China, indicate the following nominal capacities for the iPhone 15 family: 3349 mAh for the base model, 4383 mAh for the Plus, 3274 mAh for the Pro, and 4422 mAh for the Pro Max. For comparison, the iPhone 14 family posted 3279 mAh, 4325 mAh, 3200 mAh, and 4323 mAh respectively. These figures illustrate a pattern of small but consistent gains in battery size across the generation.
MacRumors notes that a similar certification process in 2022 yielded precise battery data for the iPhone 14, underscoring a track record of consistent documentation in these filings over time.
Reports from journalists suggest that even with higher battery capacities on the iPhone 15, real-world battery life does not show a corresponding increase in practice. Apple’s official site lists the typical endurance as twenty hours on a single charge for the base iPhone 15, twenty-six hours for the iPhone 15 Plus, twenty-three hours for the iPhone 15 Pro, and twenty-nine hours for the iPhone 15 Pro Max. These numbers align with the manufacturer’s stated figures for the previous-generation models, highlighting the gap between battery capacity and on-device efficiency, screen usage, and overall system optimization.
In a separate note about corporate communications, there was historical discussion around how staff communications were managed in relation to device safety topics. Apple has previously addressed internal communications regarding potential radiation concerns, emphasizing protocol and safety standards rather than public disclosures that could cause alarm. This context is part of the broader narrative around how manufacturers balance transparency with regulatory and corporate considerations.