I'm retired from the lab and I'm blissfully unaware of any problems with the cells. The best I can figure out is these are still CATL cells, which have been solid in previous testing I did, but the tabs were horrendous on one specific cell I tested...layered thin strips of aluminum that did not...
Didn't we have a guy in here with over 12 years testing L-ion cells to include cells from the Lightning? Might want to search for his previous posts. :wink:
To reply to post #12 and #13, the actual Vmax for the cells is 4.15 V, plus/minus 0.05 V, but the BMS will not allow you to get there.
I take it that you didn't read the write up and skipped to the graphs. I do state where RPT0 started, and what the top of the graph is. From that you should be able to calculate each of the hash marks.
Yes. I duplicated my normal drive cycle on the side. 30% delta with the upper limit at 85% SOC (displayed, 80% actual)) closely tracked closely with the 30% delta at 25C at 50% SOC as the center point.
Thermal Stability is the highest temperature a cell can sit at without an effect to the cell. Once you go above this temperature, the cell will start going through an a thermal reaction and will start increasing the temperature of the cell without other inputs. It will steadily increase in...
So what is the whole point of this thread? If you have a hypothesis that is properly sourced, post it. Otherwise, just delete the post unless you are just raging against the machine and trying to poke people.