How long does the Vortex Energiser last?

Indefinitely. The Vortex Energiser seems to have the facility to regenerate and revive itself. It is constantly drawing from the ether, the subtle energy that pervades space.

By drawing and accumulating it is continuously recharging itself. More.

I cant really gove you an answer,but what I can give you is a way to a solution, that is you have to find the anglde that you relate to or peaks your interest. A good paper is one that people get drawn into because it reaches them ln some way.As for me WW11 to me, I think of the holocaust and the effect it had on the survivors, their families and those who stood by and did nothing until it was too late.