135 volts SUPER crystal battery??? - NO JUST .67 VOLTS

Hi folks, I used a three inch long 2 inch diameter copper fitting and placed a 3.5 inch long 15/16 inch diameter carbon rod in the center with a brass screw buried in it. Then I used a thick pourable water batter made from Alum, Epson salt, Borax, and no salt salt. Half a cup of each is used and poured into the copper fitting where I plan for it to dry and harden like a rock..