On December 8, Blue Current, an American company specializing in the production of silicon elastic composite solid - state batteries, made the announcement that it had successfully closed a Series D funding round, raising more than $80 million. In the world of business financing, a "Series D funding round" is a well - established term. It represents a later stage of investment in a company's growth journey, typically coming after the company has already gone through several previous funding rounds (Series A, B, C, etc.). This stage often focuses on further scaling the business, preparing for an initial public offering (IPO), or making strategic acquisitions. This particular funding initiative was spearheaded by Amazon. The phrase "led by" is a common business expression indicating that Amazon played the most prominent and influential role in organizing and driving this funding round. Alongside Amazon, other investors such as Koch Disruptive Technologies (KDT), Piedmont Capital, Rusheen Capital Partners, and Allen & Company also joined in. Blue Current clarified that this influx of funds will serve as a catalyst to expedite the commercialization process of its silicon composite battery platform. "Commercialization" here refers to the process of taking a product or technology from the research and development stage to the market, making it available for consumers and generating revenue.