>>41
家庭用で約4,000万円の蓄電池乙

家庭用40kWh、34,750ドル、196kgの水素バッテリー
https://www.ecogeneration.com.au/the-40kwh-34750-196kg-hydrogen-battery-for-the-home/
https://www.ecogeneration.com.au/wp-content/uploads/2020/10/LAVO-and-Professor-Francois-Aguey-Zinsou-Copy.jpg