Nickel-hydrogen batteries have been used in space for several years, but a California company adapting the technology for storing energy here on earth has raised US$100 million in a Series A funding round. 

Update 1 September 2020: EnerVenue CEO Jorg Heinemann got in touch with Energy-Storage.news post-publication of this story to give a few extra pieces of detail on the company and its commercialisation plans for the metal-hydrogen batteries.