Apple‘s upcoming iPhone 16 Pro Max will feature significant advancements in battery technology, according to analyst Ming-Chi Kuo. In his latest supply chain survey, Kuo reveals that the device will incorporate battery cells with increased energy density. This enhancement is set to provide users with either extended battery life using the same physical battery size as current models or maintain existing battery life with a smaller, more compact battery.

Kuo explains that the increased energy density of the battery cells, measured in watt-hours per kilogram (Wh/kg), presents a key advantage. “The benefit is longer battery life with the same battery size or a lower battery size with the same battery life,” he noted. This development marks a significant step forward in battery efficiency and overall device performance for Apple.

To address potential overheating issues associated with the increased energy density, Apple is reportedly implementing a new thermal solution. For the first time, the iPhone 16 Pro Max will utilize a stainless steel battery case. While stainless steel is not as effective as aluminum in heat dissipation, it offers greater robustness and resistance to corrosion. Additionally, the stainless steel casing simplifies battery removal, aligning with future European Union regulations that will require mobile phone batteries to be more easily replaceable.

Kuo points out that Sunway is expected to be a major supplier of these stainless steel battery cases. If mass production of this innovative battery design proceeds smoothly, Kuo believes that it will be adopted across all models in the iPhone 17 lineup next year.

Earlier rumors last June suggested that the iPhone 16 Pro models might employ stacked batteries, which can offer higher capacity and longer lifespan. However, Kuo’s latest survey does not mention this specific technology, leaving its inclusion in the final design uncertain.

Apple is anticipated to unveil the iPhone 16 series in approximately four months, likely around mid-September.