Is the ‘Holy Grail of batteries’ finally ready to bless us with its presence?

Earlier this year, a relatively unknown startup from Finland made a startling announcement: It had finally solved solid-state batteries. Not only that, but Donut Lab, a spinoff of Verge Motorcycles, said that its solid-state battery - long considered the "Holy Grail of batteries" for their high-density, durable, fast-charging abilities - would go into production later […]