probably the author is ahead of the traditional "electrical scientist".
For example (there are other technical solutions as well feasable):
If your on a 380 Volt industrial outlet (available in Europe and i guess in the US as well, at every petrol station, Wall Mart, car service station, restaurant parking lot you name it) and charge a (super) capacitor (which subsequently converts that electricity into chemical energy) - e.g. to a suitable battery why not charge in minutes?