edatoakrun said:
Or else, your LEAFs are reporting "funny" m/kWh results.
If your meters do check out, this would seem to be further confirmation of LEAF m/kWh report inaccuracy.
Agreed. Frankly, I expect to see differences between NullPointer's KillAWatt meter and my
Brand 20-1850 power meter, but not 8 percent! I'll guess less than 2%.
But here's the thing: I have always considered that the Hall effect sensors used to measure the traction currents in the LEAF might go out of calibration over time, particularly at higher temperatures, but frankly no error in the current sensors should impact the LEAF's range. And I think that is what Ed is reporting: range has not changed but reported efficiency has gone up, making the capacity seem lower.
But in this comparison, our LEAF has lower RANGE than NullPointer's, at least down to VLBW. To me there are only three things which could account for this difference of range:
- The capacity of the battery in our LEAF is lower than NullPointer's.
- The traction battery VOLTMETERS inside our LEAF read higher than NullPointers, resulting in battery charging cutting off at a lower ACTUAL battery voltage and therefore lower stored energy.
- The difference in range is recovered between VLBW and turtle.
All three of these things likely have some impact. Since our LEAF is older, I'm pretty sure the first one is part of the equation. But I do not know anything about the instrumentation in the LEAF so I cannot make a comment on the likelihood of the second or third options.
If we get a chance to check out our meters at some point, we will report the results here.