that's what i'm thinking - almost more of a capaciter than a
   battery - but that way, the energy that's not being used could
   be stored - and as you say, given back. And it's done an the
   level of electrons being the 1 and the 0. Batteries could then
   be OPTIONAL - and again, if they're even needed at all. And if
   they could, say, make energy creating devices that could easily
   convert to A/C - well, yikes, THAT would literally save the
   world. "