From: here@is.invalid   
      
    NASA Battery Tech to Deliver for the Grid   
      
   A battery built for satellites brings grid-scale storage down to Earth   
      
   Technologies for space are designed to be tough, safe, and   
   long-lasting. So what happens when you bring the battery chemistry   
   deployed on the International Space Station, nickel-hydrogen, down to   
   Earth?   
      
   "[It's] the most durable battery ever invented," says Jorg Heinemann.   
   Nickel-hydrogen batteries, he says, can last for 30,000 charge cycles,   
   are fireproof, and outperform lithium-ion batteries on a number of key   
   metrics for energy storage at the large scale.   
      
   Heinemann is CEO of EnerVenue, a nickel-hydrogen battery manufacturer   
   based in Fremont, Calif. "Our cost is comparable to where lithium-ion   
   is going, and we use earth-abundant materials," he says. "Nickel is   
   the most expensive thing we use. We operate at a 90 percent round-trip   
   efficiency, more efficient than lithium-ion. And there's basically no   
   maintenance on this battery, it was designed for sending up on a   
   rocket ship into outer space."   
      
   Nickel-hydrogen batteries can run for tens of thousands of cycles,   
   giving them a life of over 30 years.   
      
      
   https://spectrum.ieee.org/grid-scale-battery-storage-nickel-hydr   
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