IPhone Battery: Apple may bring stacked battery technology with iPhone 15: What it means, how it works and more

It’s still not ‘peak iPhone’ time but rumours about the next series of Apple’s flagship devices have started to gather steam. The latest rumour comes from a Twitter user, who suggests that the iPhone 15 series could use stacked battery technology. According to Twitter user RGcloudS, Samsung is expected to use the same tech on the Galaxy S24 Ultra. In a tweet, he said that Apple has already used it on the iPhone 15 series. It is a sketchy rumour as of now and we aren’t sure if Apple will make a big change to the battery of the iPhone 15 series. Nevertheless, here we explain what is stacked battery tech and other key details.

What is stacked battery technology?

Stacked battery technology, also known as a stacked cell or stacked configuration, refers to a design approach where multiple battery cells are stacked on top of each other to increase the overall energy density and capacity of the battery. It is a method used to optimise space utilisation within the battery compartment by stacking cells vertically instead of arranging them side by side.

How can it be used in smartphones?

In the context of smartphones, stacked battery technology allows for more efficient use of the limited space available inside the device. By stacking cells, manufacturers can increase the battery capacity without significantly increasing the physical dimensions of the battery itself. This helps to maintain or even reduce the overall size of the smartphone while providing longer battery life.
Furthermore, stacked battery technology also enables higher voltage output compared to a single-cell battery. By stacking multiple cells, the voltage can be increased by connecting the cells in series. This higher voltage output can be advantageous for power-hungry devices like smartphones, allowing for faster charging speeds and improved performance.

What are the benefits?

Stacked battery technology can potentially enhance the safety of smartphone batteries. By separating the cells and introducing insulation layers between them, the risk of thermal runaway or battery failure can be minimised. This design can help contain any potential issues in a single cell rather than affecting the entire battery, making it a safer option.