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iPhone 17 Battery and Charging: All of the upgrades and new features

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By Aleksandar Anastasov

Published: Sep 09, 2025, 4:07 PM

Apple iPhone

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iPhone Air and new magsafe power bank attaching to its back, with a black background.

The iPhone 17 lineup has arrived, and it brings along larger batteries, faster charging, and AI-powered battery optimization through iOS 26. Here’s everything you need to know about the iPhone 17, iPhone Air (new model), iPhone 17 Pro, and iPhone 17 Pro Max when it comes to battery and charging.

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Does the iPhone 17 series have better battery life?

Yes. Apple is quoting its longest iPhone runtimes ever, with notable gains across the lineup:

Model	Video playback	Video playback (streamed)
iPhone 17	Up to 30 hrs	Up to 27 hrs
iPhone Air	Up to 27 hrs (40 hrs with MagSafe Battery)	Up to 22 hrs (35 hrs with MagSafe Battery)
iPhone 17 Pro	Up to 33 hrs	Up to 30 hrs
iPhone 17 Pro Max	Up to 39 hrs	Up to 35 hrs

The iPhone 17 Pro Max sets a new benchmark with up to 39 hours of video playback. Apple also notes a small difference between SIM variants, as eSIM-only models use slightly larger batteries and can last up to two hours longer than Nano SIM versions.

Apple says the slimmer iPhone Air can still last a full day. It also gets a new low-profile MagSafe Battery Pack designed specifically for its thinner body and redesigned camera plateau, making it incompatible with other iPhone 17 models.

With the dedicated MagSafe Battery Pack attached, the iPhone Air can stretch video playback to roughly 40 hours. Apple positions this accessory as a way to offset the Air’s smaller internal battery without compromising its slim design.

All iPhone 17 models now use stacked battery technology, improving energy density and long-term battery health. The Pro and Pro Max also gain vapor chamber cooling inside their aluminum frames, helping maintain performance and efficiency under sustained load.

On the software side, iOS 26 introduces Adaptive Power Mode. Unlike Low Power Mode’s strict limits, it learns your usage patterns and selectively reduces background activity only when needed, offering a smarter and less intrusive way to extend battery life.

How much battery do the iPhone 17 models have?

Apple doesn’t list battery capacities on its website, but regulatory filings and teardowns suggest the following approximate specs:

Model	Expected Battery Capacity
iPhone 17	~3,692 mAh
iPhone 17 Air	~3,149 mAh
iPhone 17 Pro	~3,988 mAh
iPhone 17 Pro Max	~4,832 mAh

How fast will the iPhone 17 series charge?

Apple did not spend too much time talking about charging upgrades, but there seem to be some improvements on this front too.

Wired charging (USB-C with Power Delivery 2.0):

iPhone 17 & Pro: 50% in ~20 minutes with a 40W adapter
iPhone 17 Air: 50% in ~30 minutes with a 20W adapter, or faster with a 30W adapter
iPhone 17 Pro Max: 50% in ~20 minutes with a 40W adapter

Does the iPhone 17 series have wireless charging?

Yes, all iPhone 17 models, including the new iPhone Air, have wireless charging.

Wireless charging (MagSafe & Qi2.2):

iPhone 17, 17 Pro, 17 Pro Max: up to 25W
iPhone Air: up to 20W

Does the iPhone 17 series have reverse wireless charging?

No. While all 2025 iPhone models support reverse wired charging, Apple has not officially confirmed reverse wireless charging.

What charger does the iPhone 17 series use?

The iPhone 17 series (and the iPhone Air) relies on USB-C with USB Power Delivery (PD). That means you can use third-party PD/PPS chargers from brands like Anker, Ugreen, or Baseus and still get near-maximum speeds. Apple doesn’t lock fast charging behind proprietary protocols like Xiaomi or OnePlus.

For best results, Apple is offering a new 40W Dynamic Power Adapter with 60W Max, priced at $39 in the U.S. (and also sold in Canada, China, Japan, Mexico, Taiwan, and the Philippines). When paired with this charger, the iPhone 17 Pro and Pro Max can hit 50% in just 20 minutes.

Apple is also selling a new Qi2-certified MagSafe Charger with up to 25W output, available in 1-meter ($39) and 2-meter ($49) lengths. These chargers unlock the full wireless charging speeds of the 2025 iPhones.

As expected, no charger is included in any of the boxes — only a USB-C cable. If you don’t buy Apple’s new adapter, a high-quality 30W–45W PD charger will still deliver close to peak speeds.

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Aleksandar is a tech enthusiast with a broad range of interests, from smartphones to space exploration. His curiosity extends to hands-on DIY experiments with his gadgets, and he enjoys switching between different brands to experience the latest innovations. Prior to joining PhoneArena, Aleksandar worked on the Google Art Project, digitizing valuable artworks and gaining diverse perspectives on technology. When he's not immersed in tech, Aleksandar is an outdoorsman who enjoys mountain hikes, wildlife photography, and nature conservation. His interests also extend to martial arts, running, and snowboarding, reflecting his dynamic approach to life and technology.

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