camasleaf
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Delivery Date: 17 Jun 2011
Location: Camas, WA

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

Sat Jun 16, 2012 6:15 pm

I remember when I bought the car that the dealer was topping off while we were doing the papers. He mentioned that on all the cars he "never seen more of 128 miles, regardless of how much" he topped off. 128 miles on the GOM that is. My car was at the dealer for a week after it came. I see some of the cars at 12 months mark, so delivered late spring in AZ. Maybe there is a correlation between these capacity losses and how long the car stayed at the dealer charged at 100%, and being topped off? That will be hard to prove since CW was usually activated after the owners took delivery of the cars. Unless there is a log file in the car.

As a side note: dealers in hot climates should have QC, so their demo cars do not stay at 100% to make the prospective clients fill good.
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KJD
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Re: Lost a "high-voltage battery status" bar, down to 11

Sat Jun 16, 2012 7:03 pm

camasleaf wrote: Maybe there is a correlation between these capacity losses and how long the car stayed at the dealer charged at 100%, and being topped off?
That could be the source of the problem for a lot of people. I can see the cars sitting outside in 110 degree heat and the pack at 100% for days on end.

It would be easy for Nissan to fix this problem. Just have the cars ship with a default to charge to 80% only.
Last edited by KJD on Sat Jun 16, 2012 7:04 pm, edited 1 time in total.
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Boomer23
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Location: Orange County, CA

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

Sat Jun 16, 2012 7:04 pm

LEAFfan wrote:You can add one more to the bar losers in the Phoenix area. Someone told me that Skywagon lost a bar about a month ago or so and they said he has already traded it in on some kind of hybrid after Nissan told him the same thing...his loss was "gradual" and "normal". He bought it in Jan. and had over 15K miles on it. The person didn't know which hybrid he bought.
I was wondering about Skywagon. As I recall, he bought his car from Fontana Nissan in CA and drove it home or perhaps trailered it home. So if anyone is thinking that some of this capacity loss might have been caused by the shipping and storage of LEAFs at AZ dealers, Skywagon would be an exception to that. Interesting that he apparently lost a bar as well.
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Volusiano
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Delivery Date: 03 Jun 2011
Location: Phoenix, AZ

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

Sat Jun 16, 2012 10:41 pm

I picked mine up the day after it arrives at the dealership so I know mine wasn't sitting in storage at 100% charge for any long time at the dealership. Still lost a bar...

Carcus
Posts: 28
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Re: Lost a "high-voltage battery status" bar, down to 11

Sat Jun 16, 2012 11:27 pm

Nothing to add really except, ....

everyone seems to be thinking capacity loss is a result of a repetitive conditon/repetitive event .....

any chance it's just a one time event?

i.e. one overheat to above x temperature (west sloping concrete parking spot, almost no air circulation, adjacent to a 12 ton A/C compressor exhaust in august for several hours) and a major hit on capacity? (prolly not, but it seems like it should at least be discussed) --- add, if NWS is reporting 115 deg F, hold a thermometer 12" off the pavement in scenario described at 3 pm in the afternoon and guess what it will read ...(hint, much higher than 115)

/p.s. your cars have a big ol temperature gauge on the dash, this is pretty much not in the conversation either .... should Nissan redo some programming here (i.e. temp history, temp history vs charge, etc. ...is the temp gauge collecting data all the time?, does the car call you when it's getting too hot?)
Last edited by Carcus on Sun Jun 17, 2012 1:18 pm, edited 2 times in total.

jomo25
Posts: 6
Joined: Thu Dec 08, 2011 11:58 am
Delivery Date: 08 Dec 2011

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

Sun Jun 17, 2012 12:56 pm

As someone who lived in Austin for 9 years, then moved to PHX. Here's a frame of reference. In 2011:
Austin set record high avg temp in Aug 2011: 91.6
Dallas set record high avg temp in Aug 2011: 93.4
Vegas set record high avg temp in Aug 2011: 93.9
Phoenix set record high avg temp in Aug 2011: 98.3

That's a constant 4.5 degree higher than pretty much anywhere else. (Only Needles, CA was higher at 98.8)

And as another point, last September 2011, Phoenix didn't drop below 91 degrees, AT ALL. The lowest low temp last September was 91 for the month. So, there's no relief at night. And that's the air. The pavement still remains well over 100 as a constant heat source.

Stoaty
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Leaf Number: 3871
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Re: Lost a "high-voltage battery status" bar, down to 11

Sun Jun 17, 2012 1:06 pm

jomo25 wrote: Austin set record high avg temp in Aug 2011: 91.6
Dallas set record high avg temp in Aug 2011: 93.4
Vegas set record high avg temp in Aug 2011: 93.9
Phoenix set record high avg temp in Aug 2011: 98.3
Sounds like the Leaf was not designed with climate change in mind.
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GRA
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Re: Lost a "high-voltage battery status" bar, down to 11

Sun Jun 17, 2012 1:25 pm

Pipcecil wrote: <snip>

I am no battery/engineer guy, but something must be significantly worse in Arizona versus places like Texas. Humidity and dry air? Payment heating (could there be a difference from asphalt to concrete)? <snip>
There is a considerable difference in albedo between asphalt and concrete, and large areas of exposed asphalt contribute a significant part of the 'heat island' effect in cities. Concrete both reflects more heat in summer, and is less susceptible to damage in winter so it lasts longer. However, it's also more expensive up front (even though it's life-cycle cost is the same or lower), which is why asphalt is used so much.

[Added] For more, see

http://www.epa.gov/hiri/resources/pdf/C ... endium.pdf" onclick="window.open(this.href);return false;

especially page 5, which compares albedos of concrete and asphalt and shows how they change over time.
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EdmondLeaf
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Re: Lost a "high-voltage battery status" bar, down to 11

Sun Jun 17, 2012 1:47 pm

I would like to see Dallas and Austin data from cars that are 1 year or older.

myleaf
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Leaf Number: 000471
Location: Chandler, AZ

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

Sun Jun 17, 2012 3:28 pm

myleaf wrote:I am in Phx at 13K miles 14 months, still have 12 bars (knock on wood).
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.
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