Nothing new here.
My plate config is just like the first video, but with more neutrals.
(B)+ NNN (B)- NNN (B)+
What I haven't seen yet, is a cell with just 2 holes in the lid like I have ( but I haven't searched that much
).
I only got 2 holes. One for gas output and one for electric connections.
The electric connections are assured by an electric cable with 3 smaller electric cables inside it ( you probably have a word in english for what I've descrived ). Those 3 cables can be + or - in any configuration, and I can connect them to any any plate in any way i want. That was very helpfull when testing configurations, because i could try different settings very easly.
The guy in the second video will probably have lots of problems sealing his unit. I tryed a similar housing for my cell, and that rubber seal never worked well.
Thanks for sharing those videos.