Apple iPhone 17 Air to Feature Shrunken Battery: Leak Hints at Slimmer Design But Lower Capacity

July 19, 2025: Apple is gearing up to launch its highly anticipated iPhone 17 series in September 2025, with four models expected in the lineup — iPhone 17, iPhone 17 Pro, iPhone 17 Pro Max, and the all-new iPhone 17 Air. Among them, the iPhone 17 Air is creating the most buzz, as a new leak has shed light on its ultra-slim design — and its surprisingly modest battery capacity.

According to a report from MacRumors, the iPhone 17 Air may feature a battery rated below 3,000 mAh, possibly around 2,800 mAh. If accurate, this would make the device significantly less powerful in terms of battery endurance compared to other models in the series, particularly the iPhone 16 Plus, which housed a 4,674 mAh battery.

The iPhone 17 Air is rumored to be just 5.5mm thick, potentially making it the slimmest iPhone ever made. This ultra-thin design likely leaves limited space for a larger battery. Instead, Apple is expected to rely heavily on iOS 26’s Adaptive Power Mode to optimize power usage and extend battery life throughout the day.

Despite these software improvements, early internal testing reportedly indicates that only 60–70% of users may experience full-day usage without needing a recharge — a noticeable drop compared to the 80–90% full-day performance seen in other models.

To address this, Apple may introduce a dedicated battery case for the iPhone 17 Air. This optional accessory could help extend battery life while preserving the device’s lightweight and minimalist design.

As the launch draws closer, Apple enthusiasts are eager to see how the company balances design innovation with day-to-day practicality. While the iPhone 17 Air’s sleek profile may attract attention, its battery limitations could be a crucial factor in its reception.