Solid-State Batteries Are Leaving the Lab — and Heyi New Energy Is Already Shipping When a battery company closes a Series A round, the story is rarely just about capital. For Shenzhen-based Heyi New Energy (合一新能源, also marketed as Hynergia), the completion of its Series A financing signals something more consequential: a Chinese solid-state battery manufacturer has already moved past prototype, past pilot, and into commercial mass shipment — and is now raising institutional capital to scale further. That sequencing matters enormously. European battery startups still largely treating solid-state as a 2030 problem should be paying close attention. ### What Heyi New Energy Actually Does Founded in 2019 in Shenzhen, Heyi New Energy is developing and manufacturing solid-state batteries, specifically lithium-metal systems targeting energy densities exceeding 500 Wh/kg. That figure is not a roadmap target — it is the technical specification the company is building around. For context, conventional…