In the documentary "Free Energy - The Race to Zero Point" (and the John Hutchinson special) John says that the batteries are easy and cheap to make, "shake and bake" he says, with "dirt cheap" materials.
If I remember correctly he's not withholding the "recipe" for the batteries but instead gladly shares his discoveries.
Does anyone here have access to this "recipe" or know where to get it? I would love to give it a go at making one of those babies

Would be great if one could make the batteries in the same size (and specs.) as normal batteries. Then you'd never have to buy batteries again!

I quess you could make a buck selling them as well, quoting John: "Good ones that I sold for 35 000 USD gave 3 volts and one amp."
That's crazy

Cheers!
~Dreamer