Apple's Upcoming iPhone 15 Models Could Feature New Stacked Battery Design: Report

Rumors surrounding the highly anticipated iPhone 15 continue to spread, and the latest reports suggest that Apple might introduce a new battery technology in its upcoming flagship handsets.

According to a tipster known as @RGcloudS, all four iPhone 15 models slated for release in September could come equipped with a stacked battery design, a technology commonly used in electric vehicles.

What Is the Stacked Battery Design

The stacked battery design involves vertically stacking the battery components on top of each other, allowing for a more compact and tightly packaged battery with a higher energy density.

TechRadar notes that while this could potentially result in improved battery life and physically smaller batteries, some engineering challenges exist, including managing the increased heat generated by stacked batteries within the iPhone.

However, the reduced battery size could potentially free up valuable space inside the phone chassis, accommodating other components or improved cooling mechanisms.

However, information regarding the stacked battery technology remains little, indicating that Apple may implement this feature in a limited capacity while refining its functionality.

The same source also suggests that Apple has tested iPhones with 40W wired and 20W MagSafe charging capabilities, which could provide faster charging speeds than the previous iPhone 14 series.

Apple has previously used a similar approach, with iPhone X teardown reports revealing that the phone includes not one, but two battery cells set up in an L-shape, totaling 10.35 Wh (2716 mAh at 3.81 V).

Possible Reasons Behind the Redesign

In addition to the stacked battery technology, another factor contributing to potential battery life improvements in the iPhone 15 models is the introduction of the Apple A17 chip. This new chip is expected to offer enhanced efficiency, optimizing power consumption and extending battery performance.

Stacked batteries offer increased energy density, potentially resulting in a substantial upgrade in smartphone battery performance. Reports suggest that up to 10% energy density improvements are possible, which would be remarkable given the limited space available inside modern smartphones.

To accommodate the stacked batteries and maximize battery capacity, it appears that Apple plans to increase the thickness of all four iPhone 15 models slightly.

By doing so, Apple can capitalize on the additional space to enhance battery life across the board. This strategy aligns with Apple's previous practices of increasing iPhone thickness to accommodate larger batteries and provide users with improved battery performance.

Furthermore, BGR notes that recent developments from Europe shed light on a potential motivation behind Apple's adoption of stacked batteries. The European Union aims to enforce regulations requiring devices sold in the region to have easily removable and replaceable batteries.

However, it is speculated that Apple might be exempted from these rules if its devices demonstrate superior battery health even after numerous recharge cycles. The implementation of stacked batteries could contribute to meeting these regulatory requirements while offering Apple a competitive edge.

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