New (Leaked?) Tesla Cell and how I made one (sort of... out of paper) -Battery Day 2020

In this video we look at info, official and unofficial, about the potential new cell from Tesla. Questionable journalistic practices. And make a mock-up cell demonstrating what I believe may be one of the most important developments in cell design and manufacturing for quite some time.
These are my best somewhat educated guesses. I could be wrong but we'll know very soon...
This is the first video I've made in a very long time, and because the event that this pertains to is so soon, I was in a bit of a rush. Hopefully it turned out alright and you found it interesting. Who knows my guesses might even be right.

Tesla battery day almost here!

Delays have led to wild and wildly inaccurate speculations have been happening.
00:00 - Intro
00:11 - History, Rumour, and Leaks?
12:40 - Making the Mockup
History:

Tesla shows battery day teaser:
https://electrek.co/2020/08/24/tesla-teases-nanowire-technology-battery-day/
People make speculations and assumptions, including seemingly incorrect titles.

Elon says on twitter:
https://cleantechnica.com/2020/08/26/tesla-amprius-what-is-going-on/
"Nothing' is happening with Amprius or silicon nanowires as so many seemed convinced.

So what is it?
https://twitter.com/elonmusk/status/1298880004332412929
-Folded-over current collectors at the top/bottom of the cell

What is he talking about is probably this patent:
https://electrek.co/2020/05/07/tesla-patents-battery-cell-elon-musk-hypes-way-more-important-than-it-sounds/
-Tab-less electrode
-No tabs on inside of cell

Tesla already didn't use traditional tabs on their cells when going to modules.
They used something closer to integral fuses to connect the cells at least on one side.

Supposed leaked cell:
https://electrek.co/2020/09/16/tesla-battery-cell-in-house-roadrunner-first-look/
Larger size cell somewhere in the 4576 to 5496 range *didn't mention in video clip
Mathematically the ideal dimensional ratio to get best volume to surface area ratio is diameter = height , so sayeth the internet.
practical reasons lead to "cans" that are taller than wide more often.
-heat dissipation
-mechanical strength
-lessen wasted space at top or bottom (for EC cells safety vents)

Making the mock-up:
-When I learned about cell construction and the downsides to the traditional tabs. I wondered why no one has done this yet. The reliability of the connection is the answer and this is (I think) a good solution.
-A key here is the reliable mechanical connection between the current collector substrate and the cells outer housing. This allows the reliable electrical and thermal conductivity due to reliable mechanical connection.
-The feathering on the current collector (I think) would act as a sort of spring.
-They may have moved some of the cell level safety to module or pack level to get better conduction to the top and bottom.
I forgot to mention in the video:
One potential issue they would have to make sure is that the anode or cathode that has the current collector going to the top does not slide down and the other one do the opposite.

The Limiting Factor made a good video on this:
https://www.youtube.com/watch?v=94ZzLzFP5Zg

Видео New (Leaked?) Tesla Cell and how I made one (sort of... out of paper) -Battery Day 2020 канала The Tinker