#### sscherer2030

##### Member

- Joined
- Jan 8, 2013

- Messages
- 5

Our Leaf reads 12 capacity bars and has about 28K miles on it, its an '12 SL model.

The issue; it seems to me that the vehicles range deteriorates faster than the capacity, miles driven and efficiency values (in the car not carwings) would suggest.

Today I did a long drive to verify/test this out.

I drove without A/C on, running fan only, windows rolled up, tires inflated to 44psi, mostly highway with cruise set to 60-63mph, this morning was a modest 90F here in Phoenix and here are the results;

After driving 49 miles my battery level was run down to only 2 bars remaining and predicted range of 19 miles, I was nearly 40 miles from home so opted to do a Chademo (which I did not think I would need to do); Efficiency according to vehicle was 4.4 mi/kwh.

Upon plugging into station it reported 36% charge on the Leaf battery, at unplug it said 80%, so I added 44% charge back to it.

After the QC Eco-mode range was predicted at 65 miles, I drove 38 miles to home and range was down to 13 miles predicted. Efficiency of this leg of trip was reported at 4.6 mi/kwh.

Doing some calculations:

49 miles divided by 4.4 mi/kwh suggests I used 11.14 kwh, according to the Chademo I had 36% remaining so 64%=11.14kwh, suggesting battery capacity of 100% is ONLY 17.41kwh, assuming original "usable" capacity of 21.3kwh this is only 81.7% of original (NOT >85% as 12 bars on capacity meter would suggest)

The second leg of the trip seems super strange to me as well, 80% starting SOC, ending SOC @ 2 bars should be around 22-29% (http://www.mynissanleaf.com/viewtopic.php?f=31&t=2390" onclick="window.open(this.href);return false, so I used 51-58% to go 38 miles @ 4.6 mi/kwh... 38 mi divided by 4.6 mi/kwh yields 8.26 kwh which divided by 51-58% yields only 16.20kwh TO 14.24kwh of usable capacity, or a remaining usable capacity of only 67-76%...

I am borrowing a scangauge and Leafspy from a friend tomorrow to see what the computer thinks its capacity is but these numbers just don't seem to add up accurately to me and I don't know what would be the cause of that, any suggestions?