In conclusion, EFB batteries are a promising technology that offers numerous sustainability benefits in aviation and beyond. With the world’s increasing focus on sustainability, EFB batteries are poised to play an ever more critical role in the development of electric aviation, renewable energy storage, electric vehicles and backup power applications. Despite the current higher cost due to sophisticated manufacturing technologies, their advantages such as high energy density, extended service life, and excellent performance in harsh environments makes them a sustainable technology with high potential. More research and development in this area can further enhance the viability of EFB batteries and other sustainable power systems, and support the transition to a more sustainable future.