How Long Does the Newest iPhone 15 Battery Last

The iPhone brand keeps on getting their customers at the edge of their seats, with the September release date of the iPhone 15 series getting nearer and clearer. Among the most anticipated features of the new releases is its enhanced battery life and performance.

All across its models, from iPhone 15 to iPhone 15 Pro Max, many patrons are expecting its battery life will get another boost– giving a run for their competitor’s money. Fret not, as the iPhone 15 series releases new reports regarding its new battery boost.

Introducing an upgrade with its Bionic chip and other efficiency technologies, your usual productivity issues with iPhone will surely be met with the brand’s newest series. Along with its obvious benefits that greatly concern performance and usage convenience, it is important for us to know the technology behind these new features, and how they managed to be different from the previous models.

At the end of this article, you will appreciate the features even more, and you can definitely make wiser decisions in choosing your coveted iPhone model in the future!

A16 vs A17 Bionic Chip: What’s the Difference?

Apple A17 Bionic concept iphone

Image credit: Notebook Check

When talking about the unit’s performance and battery life consumption, only one thing should come to mind: the Bionic chips. These chips are inherently made for iPhone units, and their cutting-edge technology made a fine line of performance between the iPhone and other smartphones there is in the market. In the simplest sense, these chips are engineered for these Apple units to help with running apps, handling complex computations, and enhancing overall device functionality.

It contributes to faster app loading times, smoother multitasking, and improved graphics performance, making an iPhone unit a far more capable and efficient device.

Just like the evolution of its units through various series, the iPhone brand also reboots its Bionic chips, with some of its various reasons intended for optimizing battery life. Although the Bionic chip in an iPhone does not directly determine battery capacity or control power consumption, it does have an influence on the device's battery life. Its role lies in optimizing performance and power efficiency, which in turn can affect how long the battery lasts.

To further give you an idea about the power of the latest Bionic chip proposed to be engineered for the iPhone 15 series, we will compare the A16 Bionic chip and the A17 Bionic chip. The former is the latest chipset in the market, while the latter is the prototype chipset to be set in iPhone 15 Pro or the iPhone 15 Pro Max. 

While the A16 Bionic chip consists of five (5) CPU components– 3 of which are energy-efficient cores, the A17 Bionic chip is expected to raise the bar once more with its 3nm processor technology.

If you are all for power efficiency and not so much with a leap in its performance, this chipset will definitely benefit you. A 3nm processor technology in mobile devices, which is a breakthrough in itself, requires less power to operate due to its size.

With a device having this kind of processor, the iPhone 15 unit that you are using hits two stones: it generates less heat and it is able to transfer data faster. Although it is said that the launching of the A17 Bionic chip will consider battery life over unit performance, you still received a lofty bargain.

OLED Driver Chip: Another Battery Boost for iPhone 15

OLED Driver Chip Another Battery Boost for iPhone 15

Image credit: EE Power

Besides the groundbreaking A17 Bionic chip that is poised to contribute significantly to the battery life improvement of the iPhone 15 series, its display specification likewise plays a big role. The latest series which will be released a few months from now introduces a new OLED driver chip process, with TSMC, Apple’s chip manufacturer, upgrading it from 40nm HV to 28nm HV. 

To give you an idea of how impactful this upgrade will be, let us give you a basic tutorial about how OLED chip works: When these display chips are smaller in size, they typically consume less power. Utilizing a lower nanometer process, an OLED chip can enhance its power efficiency, enabling it to provide equivalent performance while using less energy.

This can result in extended battery life for devices incorporating OLED displays. In the performance parameter, on the other hand, reducing component size improves performance, as smaller transistors enable faster switching, resulting in quicker response times, improved pixel refresh rates, smoother animations, reduced motion blur, and an overall enhancement in display performance.

Although Apple will retain the Dynamic Island display feature for the standard iPhone 15 models upon its launch and no major upgrades with display specifications happening with its release, the OLED chip upgrade is definitely another big addition to the commitment of Apple to focus on battery performance. 

To better understand the difference between A16 and 17 Bionic chips, the table below illustrates their respective specifications from different parameters or categories:


A16 Bionic Chip

A17 Bionic Chip

iPhone Devices

iPhone 14 Pro and 14 Pro Max; iPhone 15 and iPhone 15 Max

iPhone 15 Pro, iPhone 15 Ultra, and iPhone 15 Pro Max 

Processor Technology

4nm (enhanced version of 5nm)





OLED Driver Chip 

40nm HV

28nm HV

Update to iPhone 15: Is It Really Worth It?

Update to iPhone 15 Is It Really Worth It

With the iPhone 15 series poised to focus most of its improvement on battery efficiency, some tech experts are united in forecasting that the performance of the said series will not get as eventful as many would expect.

In the previous chipsets, it has become noticeable that they lacked CPU performance gains. However, considering the potential power efficiency of the A17 Bionic, Apple could leverage the advantage of enhanced battery performance to reintroduce features that were omitted from the A16 Bionic, such as ray tracing support in gaming.

This was previously deemed infeasible due to excessive power consumption and other limitations.

In the end, your consumption behavior and preference will still be at the top of your decision in buying or upgrading to an iPhone 15 model. If you are an up-to-date user and would like to maximize the performance of your phone without having to compensate for its battery life, an iPhone 15 model is definitely for you to purchase.

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