![](PPPPE-sideB.jpg)
First flat plate perforated plastic pocket electrode.
I glued ribs outside on both faces, fearing the center would bulge out
too much.
For flooded cells gas needs a gap to bubble up
though anyway.
This nickel plated current collector grill and leed was the last one
before I found out they had to be zinc coated.
![](SqPocSelBatt.jpg)
First pocket electrode battery with 1/2" square cylinder electrodes.
Case is sheet ABS fised with methylene chloride.
![](HShrinkTrode2-Pcs.jpg)
Compacted zinc electrode on carbon rod, and perforated heatshrink.
Note ABS plastic "washers" at each end.
![](HShrinkTrode2.jpg)
Heatshrink on and shrunk