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COSMOS LAB has raised $15.6M in a Series A round, with Smilegate Investment providing the capital. The funding backs a startup that has spent the past few years developing zinc-bromine aqueous secondary batteries, a niche corner of energy storage that its founders argue sidesteps the industry’s biggest headaches.
The company’s pitch hinges on a water-electrolyte technology it says eliminates battery fires entirely, while avoiding lithium, nickel, and cobalt-materials that have become geopolitical flashpoints. Instead, its batteries rely on activated carbon derived from burned wood waste or coconut shells, a detail that gives the product an environmental angle. COSMOS LAB, founded in 2021, also touts the batteries’ light weight relative to energy density, though the round’s backers are likely betting on the broader safety and supply-chain story as much as the chemistry itself.
