delphe
Posts: 2
Joined: Tue Jan 15, 2013 8:22 am
Delivery Date: 27 Jul 2011
Leaf Number: 005411

Re: Phoenix Range Test Results, September 15, 2012

Tue Jan 15, 2013 10:40 am

Thank you for posting these results. I went to the Phoenix Nissan Leaf Town Hall meeting a couple weeks ago and was surprised by how many people were upset with their range/capacity. So, I decided to do a range test of my own. I normally drive 17 miles a day and plug in on a 120v at work to 80% capacity. Very rarely do I use a 240v or charge to 100%. The last couple times when I charged to 100% I noticed I had one extra bar extend past the total range bar, like so:
https://www.facebook.com/photo.php?fbid ... 43af72d9dd

I never noticed that I lost a bar, so I assumed it showed 13 out of 12 bars. After I took the picture and counted I realize it's 12 out of 11 bars. Representatives from Nissan said the bars were too pessimistic. 12 out of 11 bars seems a bit overly optimistic to me. When I first got my car, the most I drove without charging was 80 miles with 10 miles left on the indicator and 1 bar remaining (estimated 90 miles range). This was going a route to work that has a speed limit ranging between 30 mph & 45 mph (mostly 30 mph). I took this same route last week and I’m disappointed by the results:

Test Begin Date: 01/10/2013
Test End Date: 01/14/2013
Leaf Year: 2011
Milage at start of test: 11099
Milage at end of test: 11175
Average Economy before test: 4.8 miles/kWh
Average Economy after test: 5 miles/kWh
Max Speed durring test: 45 mph
Average Speed durring test (approximate):37 mph
AC: Off
ECO Mode: On

Bars | Miles Driven | Miles Remaining (as displayed on the dashboard)
12 | 0 | 95
11 | 8.6 | 83
7 | 26.2 | 55
5 | 41 | 39
2 | 55.7 | 19
1 | 60.5 | 11
1 | 71.5 | 5
0 | 75.3 | 4
0 | 75.7 | ---

I doubt I'll be keeping the Leaf after my lease is up, unless a replacement battery isn’t too costly (we’ll find out the battery cost this spring apparently). I'm going to do another range test in the summer and one right before my lease is up. Any suggestions on what other data I need to collect or what other EVs you recommend? I want to stick with an EV if I turn this one in at the end of my lease. I need at least a 50 mile range. At the rate my Leaf is going, by 2016 I'll expect to be able to get at most a 47 mile range, unless my math is off.

I hope Nissan improves their battery cooling methods.

Thanks,
Eddie D.

User avatar
TonyWilliams
Posts: 10090
Joined: Sat Feb 19, 2011 1:48 am
Location: San Diego
Contact: Website

Re: Phoenix Range Test Results, September 15, 2012

Wed Jan 16, 2013 5:16 pm

delphe wrote: Average Economy before test: 4.8 miles/kWh
Average Economy after test: 5 miles/kWh
Overall, awesome job collecting data, however...

There is one huge flaw in your data; you needed to start with "---" for economy before the test by resetting it. We don't have any idea what your economy is with this data.

Secondly, we have no use for the average speed or the "distance to empty" remaining on the dash.

Also, we need the likely temperature of the battery. Can you redo the test with these changes?

delphe
Posts: 2
Joined: Tue Jan 15, 2013 8:22 am
Delivery Date: 27 Jul 2011
Leaf Number: 005411

Re: Phoenix Range Test Results, September 15, 2012

Thu Jan 17, 2013 8:39 am

Tony,

Thanks for the recommendations. I forgot to mention in my previous post that I did perform a reset before I began the test. I changed it to read...
Average Economy before test: 4.8 miles/kWh and then reset to "---"

I think it would be helpful if I collect the average economy at every data collection point and reset each time.

I felt it important to show both the economy level I was driving at before I began and the "distance to empty" to emphasis the fact that the distance to empty on the dash is inaccurate (at least for the first 30 miles or so) even when you're driving slower then normal. Most Leaf owners already know this, however. So, I guess it wouldn't help you much. The average speed is the best I could do in real world conditions in my case because I don't normally drive on the freeway. The speed definitely impacts range so I have to give something for the speed I drive.

I know the battery temperature gauge isn't very accurate but I could post the number of segments each time I do my data gathering. Is there a better way to get the temperature without purchasing fancy equipment?

Thanks,
Eddie D.

User avatar
DaveEV
Forum Supporter
Posts: 6236
Joined: Fri Apr 23, 2010 3:51 pm
Location: San Diego

Re: Phoenix Range Test Results, September 15, 2012

Thu Jan 17, 2013 9:08 am

Eddie, your test shows that you are down roughly 20% capacity, as one might expect with 11 capacity bars showing.

At 5.0 mi/kWh a new LEAF will go a bit over 100 miles, but yours looks like it would have done a bit more than 80.

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