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Not in the pouch cells...that would be dangerous and will probably cause a short circuit in the cell. There are two thermisters (different from a thermocouple) in each module that is read by the BMS.

I can't remember the order, but if you are in the low angle rear view camera (tailgate), switch over to the bed view (top of cab) to see if there is an exit button. If you are in the bed view, try the other way to see if there is an exit button. I remember switching views allowed me to exit...

I lost a mentor recently that I held in the same regard as Dr. Goodenough, Dr Dahm, and Dr. Judy. He was a peer to these individuals, but not as well known. They held him in high regard and some of them were in the consortium just because he was the project manager. Bapi, as he was known...

No. While I use coulomb counting in my cell testing, it does not do well in strings.

I cannot not tell you how specifically the BMS works or if 100% will help...I'm a cell expert and can tell you how to make them live almost forever. I will say that usually, the SOC is based on voltage only. If you do find yourself stuck and unable to move forward, try driving in reverse :wink:

Can't share the data without your company joining the consortium (have to pay for all four years of tier 1 data ($150k per year)at this point so we are looking at $600k), but if I recall, we did set a 1 time to 100% and it still stop at 90%, then we set the 1 time again and restarted the process...

I always say "how much does it cost to replace your transmission?" Same thing, both warrantied for about the same length.

Data from our test truck shows different...are you basing this statement on hard data or your personal experience?

Been there, done that, sorry I can't share the video and data :wink: Now working on a Model Y with the 4680 cells.

94? 130%? Where did you see that number? And avoid it in the future. When listing chemistry, the numbers should equal 10, which is 100%. If you have a cell with 90% nickel and still has manganese and cobalt, you will have a 9.5.5 I really don't remember what the SKE805A is, and I really...

Take Dr Dahn's advice over ANYTHING I might say! I will probably go with my observations over Dr Dahn, but he has MUCH better knowledge than I do. I do the 85% of usable SOC to handle anything that might come up.

I will say that after watching his videos, I knew we were taking the top cover off wrong. Our top cover was bent all to hell on the first module. After watching, we found a better way so the top cover looked like theirs did. But it would have been nice to see some video of cutting off the...

Already put some out there in other threads :wink: I'm concerned about the resistance below 20% actual SOC, and don't let the cells sit at 55C. Search the threads for more specifics.

You can check out Monro, but they have a habit of not showing their work...they will start with dropping the pack, maybe showing the cover off, and quickly cutting to the disassembled module.

Having taken apart both the Mach E and the Lightning battery, the only similarity is they are in a pack structure that contains modules. Processes and procedures are completely different, including how to lift the modules out. When it comes to how the modules are assembled, nothing is similar...

We are doing our standard consortium testing on actual cells from a Lightning (SKE805A). We harvested the cells from a module (so all of you who still think that an individual cell can be replaced are very wrong) Characterization testing is complete (and I made a comment in a couple of threads...

I'd tell you how to fix it, but it's going to cost you $0.20.

I can tell you from experience of actually deconstructing a Lightning module that they will not be replacing a cell. You basically have to destroy the module JUST to get to the cells. Then to extract a cell, you have to destroy the busbars. Too bad I can't share the pictures here ;)

No, it is not the same. I see this in the data from actually testing cells, and now I'm testing the SK 805A (if that seems familiar, it is the cell in your truck). I've posted plenty of data on how to make your cells live virtually forever, and why I don't follow my own advice in some situations.

Sorry, that report is owned by another division and while I got a copy of the final report, I cannot send it. There are contact points in the press release that you might try to get a copy.