Apple supplier TDK announces solid-state battery breakthrough

Apple Watch SE appears in a store in Krakow, Poland on April 20, 2024.

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Japanese electronics parts maker TDK said Monday it has successfully developed a material for its solid-state batteries, achieving a breakthrough it estimates could provide much higher performance for wearable devices.

Tokyo-based Apple supplier He said The material used in small solid-state batteries has an energy density of 1,000 watt-hours per liter (Wh/l), which is approximately 100 times the energy density of conventional solid-state batteries produced by TDK.

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