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davewill
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Re: Lost a "high-voltage battery status" bar, down to 11

Tue Jun 19, 2012 12:43 pm

cwerdna wrote:... AZknauer says they live in Chandler, AZ (viewtopic.php?p=206788#p206788). Not sure why they haven't updated their location...
Chandler is a suburb of Phoenix.
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SanDust
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Re: Lost a "high-voltage battery status" bar, down to 11

Tue Jun 19, 2012 5:34 pm

TomT wrote:It appears that GM is going to have the last laugh when it comes to batteries and battery thermal management... I wonder if Nissan wishes they had changed their mind on no management for the Leaf at this point...
When I tried to explain last year that heat was going to do a number on battery capacity the response was that the Nissan cells were so much better than the LG cells that the Leaf didn't NEED a thermal management system. viewtopic.php?f=4&t=5048&p=118407#p118407 Obviously that was wishful thinking.

Not sure about the last laugh. It may be cheaper for Nissan to replace the packs or stiff those customers in AZ rather than add a TMS to every Leaf. (Hopefully replace the packs). It's just a different strategy. Nissan did was willing to compromise life in order to lower the initial price point; GM was willing to compromise the price point in order to increase battery life. At the moment it's looking like Nissan may have made the worse bet but the game isn't over. (FYI I think the DOE thought Nissan's approach might be better because it would allow the manufacturer to put more EVs on the road sooner).

myleaf
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Re: Lost a "high-voltage battery status" bar, down to 11

Tue Jun 19, 2012 5:40 pm

LEAFfan wrote:
Stoaty wrote:
myleaf wrote: I finally built my SOC kit and measured after 100% charge. I got 227. I ran the climate control using CW for 30 mins and it went to 229. This level of degradation maybe consistent for Phx. I normally charge to 80%. What is odd is that I still have all my capacity bars.

Yes, but it sounds like you are right on the edge of losing the first capacity bar. :(


Yes, they are at a 14% loss right now. They will lose it soon. One other driver that I tested was at 14%, and the next day he lost the first bar.


As predicted by LEAFfan and Stoaty,

I loss the 12th bar today going home from work.

6/19/2012 14 months, 13,300 miles Never QC, usually charge 80%, Phx (Chandler) AZ
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EdmondLeaf
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Re: Lost a "high-voltage battery status" bar, down to 11

Tue Jun 19, 2012 5:46 pm

Sorry to hear that even you expected this, we already know that it not matter much bat please share her you park your car day and night and describe condition. I never thought of running AC in my garage but I did that already and no summer yet

myleaf
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Re: Lost a "high-voltage battery status" bar, down to 11

Tue Jun 19, 2012 5:50 pm

EdmondLeaf wrote:Sorry to hear that even you expected this, we already know that it not matter much bat please share her you park your car day and night and describe condition. I never thought of running AC in my garage but I did that already and no summer yet


I have covered open parking M-F at work. Rest of the time at home in a closed garage with an ICE car.
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Stoaty
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Re: Lost a "high-voltage battery status" bar, down to 11

Tue Jun 19, 2012 7:18 pm

myleaf wrote:As predicted by LEAFfan and Stoaty,

I loss the 12th bar today going home from work.

That makes 13 reported on the forum, plus another 4 by word of mouth for a total of 17. Looks like Nissan spoke a bit hastily about this being a very isolated problem... unless, of course, they mean pretty much isolated to Phoenix. :x
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OrientExpress
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Re: Lost a "high-voltage battery status" bar, down to 11

Tue Jun 19, 2012 7:35 pm

8.
Last edited by OrientExpress on Thu Sep 13, 2012 12:46 pm, edited 1 time in total.
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TomT
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Re: Lost a "high-voltage battery status" bar, down to 11

Tue Jun 19, 2012 7:46 pm

You need to use only the number of cars in the phoenix area or your statistic is essentially meaningless in this context. And there are likely more in Phoenix than 17 since not everyone is on this board and reporting...

OrientExpress wrote:17 cars out of a population of 25000 is .00068. That is more than 3 standard deviations from the mean, or in layman's terms, an edge case.
Last edited by TomT on Tue Jun 19, 2012 9:28 pm, edited 1 time in total.
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Stoaty
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Re: Lost a "high-voltage battery status" bar, down to 11

Tue Jun 19, 2012 7:47 pm

OrientExpress wrote:17 cars out of a population of 25000 is .00068. That is more than 3 standard deviations from the mean, or in layman's terms, an edge case.

Actually, we are talking about 17 cars out of a population of perhaps 500 cars (just guessing, don't know exact number) in Phoenix (3%). Also, note that the reports have all been over a period of about 6 weeks. There is every indication that more will be reported in Phoenix over the next several months. Also, for every one that is reported there are probably several more that have lost a capacity bar, but the owner doesn't know or doesn't post on this forum. You seem to be purposely ignoring that the problem has only been observed in very hot climates. You can't use the thousands of cars in cooler environments in the denominator, since no one ever said those cars were having a problem.
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Re: Lost a "high-voltage battery status" bar, down to 11

Tue Jun 19, 2012 8:47 pm

17 cars out of forum reports from Phoenix is a huge number.. right now I would be interested in hearing from other Phoenix owners with NO degradation.

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