GS Yuasa Corporation (Tokyo Stock Exchange: 6674; “GS Yuasa”) today announced that lithium-ion batteries manufactured by GS Yuasa Group company GS Yuasa Technology Ltd. (“GYT”) have been installed in the H-IIA Launch Vehicle  No. 50 (Final Unit) manufactured by Mitsubishi Heavy Industries, Ltd., which was launched on June 29, 2025 (JST).Additionally, GYT's lithium-ion batteries are also installed in the Greenhouse Gas and Water Cycle Observation Satellite GOSAT-GW*1 (hereinafter referred to as GOSAT-GW), manufactured by Mitsubishi Electric Corporation, which was transported by the launch vehicle.

GYT’s lithium-ion batteries for launch vehicle have been adopted in all H-IIA and H-IIB Launch Vehicle from the 8th to the final unit since 2002, supporting Japan's space development and utilization for over 20 years.

Additionally, GOSAT-GW is part of a project promoted by the Ministry of Education, Culture, Sports, Science and Technology and the Ministry of the Environment, aimed at monitoring greenhouse gas concentrations, monitoring emission sources, understanding and predicting climate change-induced water cycle variations,and for applications in weather forecasting, fisheries, and navigation support. GYT's space-use lithium-ion batteries*2 have been adopted in over 250 space vehicles worldwide since their orbital space verification in the early 2000s. Their track record and performance capable of withstanding long-term operation in the high-vacuum space environment have been recognized, leading to their selection for the GOSAT-GW.

GYT develops, manufactures, and sells batteries and power supplies for special applications, delivering high-performance, high-quality batteries for special environments ranging from the depths of the ocean (6,500 meters below sea level) to the upper atmosphere (36,000 kilometers above sea level). We will continue to contribute to space development through the development and manufacture of high-performance lithium-ion batteries.

*1 Abbreviation for “Global Observing SATellite for Greenhouse gases and Water cycle”
For details on functions and roles, please refer to the website of the Japan Aerospace Exploration Agency (JAXA) . https://www.satnavi.jaxa.jp/files/project/gosat-gw/en/

*2 This is a high-performance lithium-ion battery for space applications developed under a commission from JAXA and registered in the JAXA Component System (a system where JAXA's Research and Development Department develops components and devices commonly used in artificial satellites and registers them in the JAXA database for disclosure). For more details, please refer to the JAXA website.
https://www.kenkai.jaxa.jp/eng/library/database/db-dccc.html