https://www.popularmechanics.com/science/a40230247/solid-state-batteries-electric-vehicles/

From Popular Mecanics –

“QuantumScape claims that you will be able to buy an Audi or Volkswagen with its batteries as soon as 2024, a vehicle that can go nearly 400 miles on a single charge, then recharge in 15 minutes. That capability would grant solid-state EVs a huge advantage over their competitors, which rely on the ubiquitous—but weaker—lithium-ion (Li-on) batteries. All-solid-state batteries (ASSBs) promise prolonged life, faster charge times, and safer chemistry compared to Li-on options, but producing them on the scale needed to power millions of vehicles won’t be easy, despite the billions of dollars already invested in the tech. Companies like QuantumScape are racing to reach the market ahead of other battery-focused outfits like Solid Power in Colorado and ProLogium Technology in Taiwan, as well as giant auto makers like Nissan. The competition begets, maybe even necessitates, bold claims, and QuantumScape isn’t short on those.”