[BlazingArizona]

Does this mean that cars (and so forth) will some day be powered by batteries that never need to be recharged

No, it would mean that much less of each charge would be lost by leakage before being used. We would be able to use the new generation of supercapacitors in place of inefficient chemical batteries. Capacitors the size of AA cells that hold 3300 farads are already on the market, but the charge leaks away fairly quickly.

[Matchett-PI]

Thanks! This is really an exciting development.