SoftBank Corp. (“SoftBank”) and Enpower Japan Corp. (“Enpower Japan”), a subsidiary of US-based Enpower Greentech Inc. (“Enpower Greentech”), have promoted the development of lightweight, large -capacity and high specific energy (Wh/kg) next-generation batteries with applications for IoT devices and cellular base stations.
Both companies recently succeeded in the development of technologies that reduce interface resistance between the cathode and solid electrolyte layer and reduce the weight ratio of solid electrolyte to achieve high energy density.

・Press Release
https://www.softbank.jp/en/corp/news/press/sbkk/2023/20230824_01/
・Detailed Story
https://www.softbank.jp/en/corp/technology/research/story-event/022/