Battery Life Comparisons of the New iPhone Models

Battery Life Comparisons of the New iPhone Models
source: gettyimages
September 18, 2025

Tom's Guide recently conducted a comprehensive battery life test on the latest iPhone lineup, including the iPhone Air, iPhone 17, iPhone 17 Pro, and iPhone 17 Pro Max. The test involved continuous web browsing over 5G with each device set to 150 nits of display brightness.

Battery Life Results

| Model | Battery Life | |-----------------------|----------------------------------| | iPhone Air | 12 hours and 2 minutes | | iPhone 17 | 12 hours and 47 minutes | | iPhone 17 Pro | 15 hours and 32 minutes | | iPhone 17 Pro Max | 17 hours and 54 minutes |

The iPhone 17 Pro Max, the highest-end model, lasted nearly 1.5 times longer than the ultra-thin iPhone Air, with a 48.5% increase in battery duration. These findings align closely with Apple's official specifications, which state the Pro Max can deliver up to 44.5% longer battery life than the Air during offline video playback.

Offline Video Playback Durability

| Model | Offline Video Playback Capacity | |-----------------------|--------------------------------| | iPhone Air | Up to 27 hours | | iPhone 17 | Up to 30 hours | | iPhone 17 Pro | Up to 33 hours | | iPhone 17 Pro Max | Up to 39 hours |

It’s important to note that real-world usage typically involves varied activities rather than continuous browsing or video watching. Consequently, these battery tests serve as benchmarks rather than definitive daily performance indicators. Additional testing will likely provide a clearer picture of everyday battery life.

Release Details

All new iPhone models are set to launch this Friday, September 19.

Additional Tech News Highlights

iOS 26 Rollout

Battery Life Notices for iOS 26

Upcoming Apple Products

iPhone 17 Launch & Features

iOS 26 Features

Packaging & Previews

Stay tuned for more updates on Apple’s latest devices and software releases as they unfold!

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