A lithium-ion battery that stores twice as much energy is a step closer to commercialization thanks to a deal with the U.K. home appliance company Dyson.

The startup Sakti3 announced today that it has signed a joint development agreement with Dyson, which makes vacuum cleaners and other appliances, to incorporate its batteries into new products. The companies didn’t say when those products will be available, but one could be a cordless vacuum cleaner. Dyson also announced a $15 million investment in the startup.

Sakti3 uses new materials and manufacturing techniques to achieve higher energy density. The company’s battery does away with the flammable liquid electrolyte used in conventional lithium-ion batteries, which makes it feasible to use a different set of high-energy storage materials (see “Solid-State Batteries” and “A Battery for Electronics That Lasts Twice as Long”).

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