A new version of an old idea is threatening the battery industry
By ron on Feb 2, 2008 in Economist, Project Energy
PUT the pedal to the metal in the XH-150—a souped-up Saturn Vue—and watch the instruments. Sure enough, the speedometer shoots up in a satisfactory way. But an adjacent dial shows something else: the amount of charge in the car’s capacitors is decreasing. Ease off the accelerator and as the speedo winds down the capacitors charge up again.
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