DC fast charging is the Holy Grail for eliminating range anxiety in pure battery electric vehicles. It has the promise of permitting you to charge 80 miles of range on the Leaf in less than 30 minutes. So, to the extent that these beasts are accessible out on the road, you will be able to drive farther, and recover when you forget to plug-in. Also, they open the EV market to folks who cannot charge at home or work, including the millions of urban dwellers for whom an EV could be ideal. No matter how big the battery, there are cases where access to a DC fast charger will be valuable.
Well, it turns out there are two incompatible standards emerging for DC fast chargers. There were some sessions in the Plug-in 2010 conference in San Jose this week that added clarity to these two alternatives.... read more