TDK, Apple’s battery cell supplier, has recently achieved a significant breakthrough in solid-state battery technology. This advancement will result in battery cells with 100 times the volumetric density of current solutions, bringing high-capacity batteries that comply with the new EU regulations.

The new TDK CeraCharge solid-state battery cell boasts an impressive volumetric energy density of 1,000 Wh/L. Not only does it offer superior energy density, but it is also safer than conventional batteries. This safety feature is especially crucial for wearables like Apple AirPods and Apple Watch, which are in direct contact with the user’s skin.

With the introduction of this new technology, there is potential for future AirPods or Apple Watch editions to incorporate these solid-state battery cells. TDK utilized an oxide-based solid electrolyte and lithium alloy anodes to achieve this breakthrough. The solid oxide electrolyte is non-flammable compared to the liquid electrolyte used in current Li-ion batteries, enhancing the safety of the CeraCharge battery.

Ensuring battery safety is paramount, particularly for wearables that are worn continuously. TDK plans to move forward with mass production of these cells and aims to further increase the capacity of its solid-state battery technology. This will result in longer battery life for devices such as earbuds and smartwatches that utilize these advanced batteries.

Overall, TDK’s innovation in solid-state battery technology represents a significant step forward in improving energy density and safety in portable devices. Stay tuned for potential advancements in future Apple products that could benefit from this cutting-edge technology.