Ammon News - Apple is expected to unveil an all-new ultra-thin iPhone 17 Air later this year, and while previous leaks have focused on its sleek design and camera layout, new information has emerged about the device’s weight and battery capacity.

According to the Korean-language Naver blog, citing a leaker known as “yeux1122,” the iPhone 17 Air will feature a 6.6-inch display, weigh approximately 145 grams, and house a 2,800mAh battery. The details are said to come from a “mass production confirmed sample.” The source has a track record of accurately reporting on Apple’s component strategies.

The reported weight is similar to lighter models like the iPhone SE 2 (148 grams) and iPhone 13 mini (141 grams). Meanwhile, the battery capacity is comparable to that of the iPhone 12, which featured a 2,815mAh battery. However, the post also mentions that Apple may opt for a high-density battery, which could boost the effective capacity by 15–20%.

This lines up with a prediction from Apple supply chain analyst Ming-Chi Kuo, who earlier stated that the iPhone 17 Air would use high-density battery technology. Supporting this, a recent Asian report noted that Apple supplier TDK is preparing to deliver a new generation of silicon-anode batteries by the end of June, which may debut in the iPhone 17 Air.

That said, there are conflicting reports about the phone’s expected battery performance. According to The Information’s Wayne Ma, internal testing shows that only 60–70% of iPhone 17 Air users are likely to get through an entire day without needing a recharge — a drop from the 80–90% seen in other iPhone models. To address this, Apple reportedly plans to offer an optional battery case for the device.

Conversely, Bloomberg’s Mark Gurman presents a more positive outlook, suggesting that the iPhone 17 Air’s battery life will be comparable to current iPhones, thanks to hardware and software efficiency improvements.

The iPhone 17 Air is also said to be just 5.5mm thick, potentially the thinnest iPhone yet. It may feature Apple’s power-efficient C1 modem and omit the Ultra Wide camera, possibly freeing up space for a larger internal battery. The device is expected to replace the “Plus” model in the iPhone 17 lineup and launch around mid-September, in line with Apple’s usual fall release cycle.