Apple's iPhone 18 Pro series delivers only marginal battery gains over the previous generation, a reality that matters to buyers expecting significant endurance upgrades. Independent testing indicates that the new models do not significantly extend usage time in demanding scenarios, suggesting that each hardware iteration does not necessarily bring a major leap in longevity. Users looking for a device that lasts significantly longer on a single charge may find the improvements underwhelming compared to the iPhone 17 Pro lineup.
Gaming endurance drops while browsing time extends
The core of this analysis focuses on the iPhone 18 Pro and iPhone 18 Pro Max, specifically examining their power consumption during intensive gaming and standard web browsing. Dave2D conducted comparative tests against the iPhone 17 Pro and iPhone 17 Pro Max to isolate the impact of the new hardware on battery life. These tests demonstrate how the updated components perform under real-world load, offering practical insights beyond theoretical specifications.
- iPhone 18 Pro Max Battery Capacity: 5,567 mAh
- iPhone 18 Pro Battery Capacity: 4,288 mAh
- iPhone 18 Pro Max Battery Life (Genshin Impact): 23 minutes longer than iPhone 17 Pro Max
- iPhone 18 Pro Battery Life (Genshin Impact): 11 minutes shorter than iPhone 17 Pro
- iPhone 18 Pro Battery Life (Reddit): 14 hours and 27 minutes
In gaming benchmarks using Genshin Impact, the iPhone 18 Pro Max lasted 23 minutes longer than the iPhone 17 Pro Max, a modest gain for the larger device. Conversely, the standard iPhone 18 Pro performed worse than its predecessor, falling 11 minutes short of the iPhone 17 Pro's gaming endurance. These figures highlight a divergence in efficiency between the two Pro models, with the smaller device struggling to match the battery retention of the older generation.
General usage tests tell a different story, with the iPhone 18 Pro lasting 14 hours and 27 minutes in a Reddit browsing loop, which is nearly an hour longer than the iPhone 17 Pro. The iPhone 18 Pro Max also showed strong results in this category, lasting 17 hours and 19 minutes compared to 15 hours and 36 minutes for the iPhone 17 Pro Max. While gaming performance remains a point of regression for the standard Pro, general browsing endurance has improved across the board.
We looked at iPhone 18 Pro closely — see our earlier coverage on Apple Confirms iPhone 18 Pro Battery Capacity. Official capacity figures remain unconfirmed by Apple, but reports suggest the eSIM-only iPhone 18 Pro and Pro Max carry 4,288 mAh and 5,567 mAh batteries, respectively. This data offers context for the observed performance differences between the new and previous generation devices.
The iPhone 18 Pro series offers mixed results for battery life, with general browsing improvements offset by gaming regressions in the standard model. Buyers should expect only minor gains in daily usage time and potentially shorter gaming sessions compared to the iPhone 17 Pro. The Pro Max remains the safer choice for those prioritizing extended endurance in high-performance tasks.
Source: NotebookCheck
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