Hey, that's me!!!
At some point I'll get the data together, as I have recorded every time a capacity bar dropped. I'm thinking though that I'm not going to be able to see how low it will actually go, as I'm at 59,600 miles.
I will say that I have treated this battery nicely, I have only seen 7 temperature bars once, and that was only after a QC, and drive it with no more than four dots when I'm accelerating, which isn't often.
For many months after I got the car, I would leave it outside overnight to keep it cooler, and charge on the 120V and also just to 80%, but of course I did switch over to the 240V as I couldn't withstand the inefficiency of the 120V charging at only about 85% efficiency, and now I can't have it less than 100% if I want to go anywhere out of my neighborhood. It has been quick charged a total of 62 times, and only on a few rare occasions more than one QC per day, and the second QC would be in the cooler evening as I was coming home.
My theory is that the dealership here in Florida destroyed the battery in the many months they had it out on their lot, in the heat and sun, keeping it at 100% charge all the time. It isn't the heat that destroys the battery, it isn't the 100% charge that destroys the battery, it is the combination of the two, with an exponential effect rather than a linear effect. I don't think the QC vs. L2 vs. L1 charging has any effect at all, at least that I've noticed. Of course, there is a time factor in there too, as now the batteries have aged, but I'm still thinking that factor is minimal compared to the heat + 100% factor.
I also don't understand how people are seeing a loss of regeneration, except of course when it is at 100% charge, which is much more often now. I drive it in ECO and still have what seems to me a normal amount.