Apple is reportedly planning a significant battery upgrade for the next iPhone, aiming to enhance per-charge efficiency and facilitate easier, potentially more affordable repairs. Ming-Chi Kuo, a reputable industry insider, details in his latest note that modifications to the lithium-ion battery of the iPhone 16 Pro Max will enhance energy density.
Battery density refers to the energy storage capacity per volume, typically measured in watt-hours per liter for lithium-based batteries like those in smartphones. A higher-density battery allows for more energy storage in a smaller space or size, potentially extending lifespan and reducing the need for frequent replacements due to chemical degradation over time. Kuo suggests that if Apple successfully implements the higher-density battery in the iPhone 16 Pro Max, it may also feature in the entire iPhone 17 series in 2025.
While enhanced battery efficiency is beneficial, Apple’s focus on a higher-density battery could also improve repairability by necessitating core design adjustments. Addressing issues related to heat dissipation is crucial to prevent accelerated degradation that could shorten battery lifespan. Apple plans to integrate a steel casing for the battery pack in the iPhone 16 Pro Max to enhance thermal management and durability.
According to Kuo, the use of a stainless steel battery case could also simplify battery removal and align with the EU’s replaceability standards for mobile phone batteries in the future. This transition could benefit DIY enthusiasts, repair experts, and potentially reduce service costs associated with battery replacement.
The potential advancements in battery technology with the iPhone 16 Pro Max could not only improve battery life but also simplify battery removal, catering to user convenience and repair accessibility. Although manufacturing high-density batteries may increase production costs and, consequently, retail pricing, the long-term benefits for consumers and sustainability are substantial.
Apple’s strategy for enhancing battery density remains undisclosed, but various research methodologies suggest electrode material alternatives, solid electrolyte integration, or solvent substitution could be key factors. Ongoing innovation in battery technology aims to optimize energy storage, efficiency, and reliability for future mobile devices.
