seb,
I came across a couple dozen 3/4 inch x 4 inch ss centrifuge tubes so I made a set of 10 cells. They are mild steel for stainless, annealed and passivated. I wanted to observe the effect of 4-6 pounds of pressure on the production of gas on 10 cells. It is interesting to see the system voltage climb and the amperage drop as you add cells in series. Now when I crank up the voltage the meter slowly sweeps up to the maximum while I charge the system.
Anyone with observations to share regarding adding pressure to the systems would be welcomed to jump in here....
kb