Leaked specifications suggest Apple plans no meaningful increase to the battery capacities in its iPhone 18 Pro lineup, according to a report by PhoneArena.
The figures, which surfaced ahead of the handsets’ expected fall 2025 launch, indicate the 18 Pro and 18 Pro Max will carry cells nearly identical in size to their iPhone 17 Pro counterparts.
What the Leaks Show
Battery capacity is measured in milliampere-hours, or mAh — a standard unit indicating how much charge a cell can store before requiring a recharge.
The leaked numbers point to only marginal differences between generations, well within the variance typically attributed to manufacturing tolerances rather than deliberate design changes.
That Matters because consumers and analysts widely anticipated Apple would use the 18 Pro cycle to push battery life further, particularly as rival Android flagships have moved aggressively toward larger cells.
The Competitive Context
Samsung’s Galaxy S25 Ultra ships with a 5,000 mAh battery, according to Samsung's official product page. By contrast, the iPhone 16 Pro Max carries a 4,685 mAh cell, per Apple's own specifications.
That gap has drawn sustained criticism from battery-life benchmarks and consumer reviews alike.
Still, raw capacity Does Not tell the full story. Apple’s tight integration between its A-series chips — custom silicon designed in-house — and iOS consistently allows iPhones to extract strong real-world endurance from smaller cells than Android competitors rely on.
Even so, users who stream video, run navigation, or game heavily on their devices tend to notice the ceiling faster on Pro models than on the larger Pro Max variants.
Why Apple May Be Holding Steady
Apple has not confirmed any specifications for the iPhone 18 series, and the company does not comment on unreleased products.
Analysts have pointed to two likely factors behind the reported stagnation. First, Apple’s move toward thinner chassis designs — a trend the company pushed hard with the iPhone 17 Air — limits physical space available for larger battery packs.
Second, efficiency gains from the anticipated A19 Pro chip could offset any capacity shortfall without requiring Apple to redesign the battery tray.
The A18 Pro chip inside the iPhone 16 Pro already delivered notable efficiency improvements over its predecessor, helping Apple post better-than-expected battery scores in independent lab tests conducted by GSMArena.
What Comes Next
Apple typically holds its iPhone launch event in September. The company has not announced a date for 2025.
Supply chain leaks of this type carry a strong track record in the months closest to production lock-in, but specifications can shift before final assembly begins at scale.
The iPhone remains the world’s best-selling smartphone line. IDC data placed Apple’s global smartphone market share at roughly 18% in 2024, underscoring how even incremental hardware decisions carry wide industry implications.
