Hi. thanks. I'm still leaning toward the ID4. of course, now there is another problem... To find one that is not above, or WAY above, MSRP.. haha ... if I just wait a while I'm sure I can save several K$.No problem....
Company that builds EV and has no buffer of any kind is Modern Lemon engineering....please forgive my ignorance....
Now reason why this PID is behind special access on ID4 is not something I can elaborate...but if you insist it is there and not just that but the date when it was assembled and what was AH after it finished curing process and testing.
I do agree with you that Government should mandate this to be available to any customer who is on market to buy used EV.
Good luck and if you become ID4 owner....welcome to the big community where we share and learn from each other .
techie blather below:
Meanwhile, Very true I don't know the Ah of the Chevy battery just after it finished the curing process and testing. More's the pity. But I bought it "new" ... All I know is the first time I fully drained the battery, using "normal" driving for me. That was some time in 2019 (bought car March 2018). The kWh the battery gave going from the "100% full" point to the "0%" point was 58.4 kWh. (of course, Chevy has a buffer at both ends. but who knows what it is, or if they can change it as the battery ages , with software.). In Jan 2020 I bought the OBD reader and the internally reported Ah value gave 58.0 kwh using the assumed formula. That seemed reasonable. Today the value is 53.8 kWh, and my range does seem to have shrunk a bit. (but ... hard to be sure). If true, that is too much degradation for me. 7% in about 20K miles.
I do wonder how Chevy makes the estimate of the available Ah as the battery changes over time. It's not like they drain and refill the battery while I'm asleep. I suspect that Chevy has an average relation between the Ah drawn and voltage for each cell. So even though I am not completely draining the cell, They can see that the voltage for a given Ah of drain is getting lower, thus there are fewer Ah available. Not completely accurate, but worth something. And they must have one of these calibration curves for each temperature and each discharge rate. Ha Ha. No fun. I wouldn't be surprised to find that in reality I have lost 10% of my battery, or even just 3% ...
And now I think of it, Chevy can't know exactly how much battery buffer there is, as the battery gets older and the cells change. Not without draining the buffer out at the bottom, or worse, trying to fill it at the top. Wow. makes me feel nostalgic for those truly non-linear and not accurate gas tank gauges. At least once one learned the pattern, it usually stayed the same.