It is the amp side of the equation that fattens it up. Like a hungry multitude at Thanksgiving.
Yeah, it is the amps that makes for the weight.
With a series of simple circuits, you can easily get 40,000 volts out of a one ounce battery.
But, I’d imagine it would take a lot of amps to keep an aircraft in flight for even a few moments.
Where is John Galt’s motor when you really need it?