Fifteen years ago John Cooper, PhD working at Lawrence Livermore National Lab had worked out a zinc air battery that could be refueled so to speak. Actually what Mr. Cooper had invented was a zinc air fuel cell power unit based on the properties of the zinc air battery.  It remains a vastly intriguing high […]

ReVolt, a Swiss company, plans to sell small “button cell” batteries for hearing aids starting next year.  ReVolt has developed rechargeable zinc-air batteries that can store three times the energy of lithium ion batteries, by volume, while costing only half as much.  The company plans to incorporate its technology into ever-larger batteries, introducing cell-phone and […]