[Kiesling]

Sorry, but unfortunately, based on user reports at 500e battery module (Responses) it's unlikely that those numbers would mean much, if anything. For example:

User A:
AmpH 56.8 at 33,930 miles, increased to 64.9 at 34,047 miles. SOH-C also increased, from 87.45 to 99.61

User B:
AmpH 61.7 at 11,676 mi. Unbelievable 3.2% capacity loss in only 83 miles, to 59.6 at 11,759 even though SOH-C remained steady at 94.9

User C:
AmpH 57.7 at 13,552 increased to 64.9 at 13,827. SOH-C increased from 88.63 to 99.61


Also, an unbelievable 8% of the reports I checked show exactly 64.9 AmpH & over 16% show exactly 99.61 SOH-C.

A and C are both for before and shortly after U69. If I recall, user A reported that his AmpH values returned to the pre U69 values a short time later. I don't recall how many charge cycles it took. But clearly the U69 campaign resets the battery values and the car has to relearn what the actual capacity is. I suspect that some of the high mile cars showing 64.9 AmpH also recently had the U69 done prior to testing.

It has also been reported that driving aggressively can lower the AmpH value and driving conservatively can increase it. If you drive consistently, I think the AmpH value is probably a good indicator of what you can expect out of the battery.

 

[Kiesling]

2 amps is a tiny fraction of the C-rating. I couldn't find the rating specs for the Samsung SDI 60Ah cell, but I did for the 94Ah cell. They rate those based on 1/3C (31.3 A). If they use the same for the 60Ah cell, they would be rated at 20 A. Looks like they use 2.7 volts as the cutoff voltage and 4.12 volts as the peak for their cycle tests. Not sure what they use for the cutoff for the capacity rating.

 

[Kiesling]

From what I've seen from other battery tests, they typically go down to 2.5 volts (or lower) for capacity tests. The drop off gets pretty fast at under 3 volts, but it still makes the numbers look better to go to 2.5 or lower. 1/3 C is pretty gentle on a Lithium Ion cell - I'm not sure if discharging at 10 times slower will have a big effect on measured capacity. My guess is that Brucutus's measurement is probably on the conservative side with the 3 volt cut off even with the slow discharge rate.