In a Surprising Binge of Transparency, Battery Companies Tell Us What They Really Have

Tesla, GM, and QuantumScape have begun divulging more and more data, but one battery maker just made perhaps the biggest reveal of all

Solid Power’s 22-layer, 20Ah all solid-state lithium metal cell compared to the company’s first-generation 10-layer, 2Ah cell. Photo: © Solid Power

For the whole of the 140-year history of automotive batteries, researchers and their bosses…