The iPhone 17 Battery Life Analysis, Capacity & mAh Guide

Battery life is one of the most important selling points for smartphone shoppers. Even if you have a fantastic camera, useful AI features and crystal-clear audio, it’s hard to enjoy these benefits if you’re always looking at your rapidly diminishing battery power. Along with price and storage, battery life is among the top three considerations that smartphone shoppers care most about.

Luckily, the iPhone 17’s battery life is impressive: 3,692 mAh for the base model iPhone 17, 3,149 mAh for the iPhone 17 Air, 4,252 mAh for the iPhone 17 Pro and 5,088 mAh for the iPhone 17 Pro Max. While the Pro Max definitely boasts the longest battery life, the base model iPhone 17 is still a significant improvement on the iPhone 16’s 3,561 mAh capacity. 

The iPhone 17 lineup has also won praise for finally introducing smooth-scrolling 120Hz screens, a technology previously reserved only for Apple’s Pro models, to its standard model. Other perks include over 1,000 nits of sustained brightness, the powerful A19 chip and a camera system with two 48MP cameras: one main and one ultra-wide. 

So is it worth upgrading to the latest iPhone model to reap the benefits of a longer battery life? In this article, OzMobiles takes a closer analysis of the iPhone 17’s battery life, how it compares to other flagship smartphones and how you can get the most out of it.

What Is the iPhone 17 Battery Capacity?

The base model iPhone 17’s battery capacity is 3,692 mAh.

iPhone 17 Battery Life by Model: 17 vs Air vs Pro vs Pro Max

The iPhone 17 comes in four variants: the standard iPhone 17, iPhone 17 Pro, iPhone 17 Pro Max and iPhone 17 Air, which is the slimmest and lightest iPhone released so far. In terms of the iPhone 17’s battery mAh and longevity, here’s how all four models stack up:

Naturally, the iPhone 17 Pro Max is the longest-lasting of the bunch, boasting the largest iPhone 17 battery mAh. The iPhone Air is a good pick if you value things other than battery life, such as portability. The iPhone 17 Pro’s battery capacity is a happy medium if you don’t want to pay the price of a Pro Max but still need something a little longer than the standard.

However, all four iPhone 17s have a battery backup to provide you with significant power. The iPhone 17’s battery life is impressive by all metrics, but how does it compare to other smartphones, including its predecessor?

iPhone 17 vs iPhone 16 Battery Life and Battery Capacity

While Apple has always been known for its long battery life, the brand continues to push boundaries, especially with its Pro Max and Plus models. Here is a comparison between iPhone 17 and iPhone 16 battery life:

 

The increase in the iPhone 17’s battery life hours remains generally consistent across the entire line-up. If you’re seeking to upgrade and looking for a phone that provides you with a more generous battery life, the iPhone 17 range won’t let you down. The iPhone 17 Pro’s battery life and the iPhone 17 Pro Max’s battery life are particularly impressive. 

How Does iPhone 17 Battery Life Compare to Other Flagship Phones?

If battery life is top of mind for you when you’re smartphone shopping, here’s how the iPhone 17’s battery capacity stacks up against other models: 

Samsung Galaxy S25

Samsung’s flagship smartphone of 2025 has a 4,000 mAh battery powering a 6.2-inch OLED display. While battery life varies considerably depending on your activities, the Samsung Galaxy S25 lasts about 13 hours, putting it pretty much on par with the iPhone 17.

Asus ROG Phone 9 Pro

If battery life is your main consideration, it’s hard to go past the Asus ROG Phone 9 Pro, the most powerful performer on the market right now. The Asus ROG lasts an average of 20+ hours on tests, beating the iPhone 17 lineup and everyone else in the smartphone world.

OnePlus 13

The OnePlus 13 was one of the first smartphones released in 2025 and came with one of the longest battery lives, nearing the 20-hour mark.

Google Pixel 10

With a battery life that lasts around 13 hours, the Google Pixel 10 slightly outperforms the iPhone 17. However, the iPhone 17 evens the score by charging faster.

Is iPhone 17 Battery Life Good Enough for Daily Use?

The iPhone 17’s generous battery life makes it an ideal smartphone for daily use. You can easily make the battery last more than a full day doing light tasks like scrolling and messaging, and it can still take you to the end of the day if you’re using it for heavy tasks like gaming.

How to Improve iPhone 17 Battery Life

When it comes to smartphones, battery life specs are closer to general guidelines than to hard and fast rules. Everything from higher screen brightness to higher temperatures to longer scrolling periods can impact the iPhone 17 battery capacity. Here’s how to protect your iPhone 17’s battery life both for the short and long term:

Use Adaptive Power Mode

Apple has introduced a new feature in iOS 26 to manage your battery use for you. Called Adaptive Power Mode, the iPhone 17 has this feature on by default, but you’ll need to enable it on older iPhones. It limits screen brightness by 3%, reduces background activity, and automatically enables Lower Power Mode when the battery level drops below 20%.

Turn on Low Power Mode

Low Power Mode remains one of the best weapons in your arsenal when it comes to preserving what’s left of your battery life. Once you enable it, your phone suspends background tasks, such as downloads and iCloud syncing, so that it can focus on the most essential tasks.

Turn down the brightness

Adjusting your screen’s brightness is an easy way to slow down battery drain. Turn off auto-brightness and manually adjust the brightness in your settings to the battery-saving level that suits you.

Turn off Location Services

Location Services are helpful for many important apps and features like Google Maps, but they also drain your battery when you don’t need them. Turn it off, along with other features like Background App Refresh, and you can save some more battery power for when you need it.

Practice good charging habits

As batteries age, they naturally degrade, and their lifespan shortens over time. To preserve your battery life over the long term, keep your battery charge between 20% and 80% instead of letting it drain to zero and then charging it fully to 100%. Avoid charging during high-demand activities, such as gaming.

Which iPhone 17 Model Should You Buy for Battery Life?

If battery life is your number one priority, there’s no beating the iPhone 17 Pro Max for a lengthy 17 hours of general use. The iPhone 17 Air is the best option for those who prioritise portability and a lightweight design over battery longevity. The iPhone 17 Pro hits the sweet spot for users who want to find the ideal balance between battery life and performance, while the standard model combines battery longevity and affordability to create the best all-rounder phone for the average user. 

Shop Refurbished iPhones at OzMobiles

OzMobiles is the place to buy the latest iPhone refurbished if you’re looking for a locally sourced device covered under a warranty. The OzMobiles iPhone range includes refurbished iPhone 17 Pro and Pro Max models, plus older models like the iPhone 16, iPhone 15 Pro Max and more. New or old, all our iPhones are fully functional with a guaranteed battery life of at least 80%, potentially saving you hundreds of dollars. 

OzMobiles is an ideal destination for refurbished phones from not only Apple but also leading Android brands like Samsung Galaxy, Oppo and Google Pixel. We take the stress out of second-hand smartphone shopping, ensuring quality with our 72-point testing process. With a 12-month warranty and a 30-day risk-free return policy, we make sure you’re happy with what you pay for. If you can’t afford it outright, our payment plans break your purchase into instalments, allowing you to buy now and pay later.

To learn more, please contact the OzMobiles team online.