avp
Posts: 18
Joined: Sat Feb 08, 2014 10:21 am
Delivery Date: 31 Oct 2013
Location: Alpedrete, Madrid, Spain

Re: Range of two LEAFs very different in same 30 mile route

Fri Feb 13, 2015 12:28 pm

Everything finished. NISSAN "A6 Iberauto", the dealer, changed us the car and they gave us a newer one (the first was registered in september 14 and the new one is from december 14). The new one is also dark grey and the SOH is 100%. The first tests indicate us that the state of the battery is perfectly normal for a new car. Thank you all for your help.
I show you a picture of my wife with her new car.
Thanks!!!
Image

User avatar
DNAinaGoodWay
Posts: 2765
Joined: Mon Dec 17, 2012 1:43 am
Delivery Date: 03 Dec 2012
Leaf Number: 23156
Location: Central Massachusetts

Re: Range of two LEAFs very different in same 30 mile route

Fri Feb 13, 2015 2:24 pm

Congratulations. A very good ending to the story.
'12 SL last reading @ 2 yr, 22k, 260 GIDs, 62.35 Ahr

'15 SV w/QC, Mfd 5/14, Leased 8/14, 292 GIDs, 64.38 Ahr when new
@ 36 months, 34k, 270 GID, 57.49 Ahr

'17 Bolt LT



6.72 kW Array

User avatar
RegGuheert
Posts: 6332
Joined: Mon Mar 19, 2012 4:12 am
Delivery Date: 16 Mar 2012
Leaf Number: 5926
Location: Northern VA

Re: Range of two LEAFs very different in same 30 mile route

Sat Feb 14, 2015 2:50 am

Yes, congratulations! Thanks for letting us know how things worked out!
RegGuheert
2011 Leaf SL Demo vehicle
10K mi. on 041413; 20K mi. (55.7Ah) on 080714; 30K mi. (52.0Ah) on 123015; 40K mi. (49.8Ah) on 020817; 50K mi. (47.2Ah) on 120717; 60K mi. (43.66Ah) on 091918.
Enphase Inverter Measured MTBF: M190, M215, M250, S280

TimLee
Posts: 2811
Joined: Thu Jan 20, 2011 9:40 am
Delivery Date: 17 May 2011
Leaf Number: 2026
Location: Chattanooga, TN

Re: Range of two LEAFs very different in same 30 mile route

Sat Feb 14, 2015 2:18 pm

Congratulations avp.
Would be useful if you updated your user profile location.
Spain and city or general area.
I hope the dealer replaced the defective module in the LEAF you returned before selling it?

Excellent helpful post RegGuheert, as always.
You are a very valuable contributor on MNL.

Tim Lee
Chattanooga, TN

Man. Date: 03/10/11, VIN # 2026
Delivered 05-17-2011
Blue Ocean, 2011 SL-eTec

User avatar
Marktm
Gold Member
Posts: 424
Joined: Thu Jan 21, 2016 10:49 am
Delivery Date: 09 Jan 2016
Leaf Number: 022737
Location: Houston, TX

Re: Range of two LEAFs very different in same 30 mile route

Sat Jul 07, 2018 7:48 am

Reg:
Did the calcs using the LeafSpy screen shot date with the following results (used LeafSpy numbers rather than a measured total pack voltage) :
Judgement value = 3.5595
Min cell voltage = 3.542
No DTC set => the calcs indicate bad cells/module needs replacement?
Are there other factors that are considered such as battery SOC, average battery voltage levels - or others? Seems I remember that the test can only be run a higher SOC conditions of the battery.
Wondering if I missed something or misinterpreted the CVLI process/calc ?


IMG_5986.PNG


RegGuheert wrote:1. PERFORM CELL VOLTAGE LOSS INSPECTION
With CONSULT
a. Select "DATA MONITOR" OF "HV BAT."
b. Check "MINIMUM CELL VOLTAGE."

Is "MINIMUM CELL VOLTAGE" 3,712 mV or less?
YES >> GO TO 3.
NO >> GO TO 2.
You are using LeafSpy instead of CONSULT and your MINIMUM CELL VOLTAGE is *exactly* 3,712 mV, so I will not type step 2 showing how to lower the voltage using the heater.
2011 Nissan LEAF Service Manual Revision: 2011 April - Page EVB67 wrote:3. CALCULATE CELL VOLTAGE LOSS JUDGEMENT VALUE
With CONSULT
1. Check "DATA MONITOR" and record "TOTAL BATTERY VOLTAGE" and "MAXIMUM CELL VOLTAGE"
2. Calculate cell voltage loss judgment value.

Cell voltage loss judgment value = (2.5 x A - 0.144 x B) / 96
A = "TOTAL BATTERY VOLTAGE" (V)
B = "MAXIMUM CELL VOLTAGE" (mV)


NOTE:
The above equation of cell voltage loss judgment value is the simplified version of the following equation.
1. Calculate the average value of cell voltage by dividing "TOTAL BATTERY VOLTAGE" by 96 (the number of cells)

Average cell voltage = "TOTAL BATTERY VOLTAGE" / 96
Of course, LeafSpy gave you this value directly:

3.851V
2011 Nissan LEAF Service Manual Revision: 2011 April - Page EVB67 wrote:2. Calculate cell voltage loss judgment value.

Cell voltage loss judgment value = Average cell voltage - ("MAXIMUM CELL VOLTAGE - Average cell voltage) x 1.5
From LeafSpy, we get:

Cell voltage loss judgment value = 3.851V - (3.861V - 3.851V) x 1.5 = 3.836V
2011 Nissan LEAF Service Manual Revision: 2011 April - Page EVB67 wrote: >> GO TO 4.

4. JUDGE CELL OF VOLTAGE LOSS
With CONSULT
a. Record "CELL VOLTAGE 1-96" with "DATA MONITOR".
b. Check to see if there is "CELL VOLTAGE" which is less than or equal to the judgment value.

OK: Cell voltage loss judgment value < CELL VOLTAGE 1 - 96
NG: Cell voltage loss judgment value > CELL VOLTAGE 1 - 96


Is there a cell voltage which is the judgment value or less?
YES >> Replace module including cell voltage the judgment value or less. Refer to [EVB-153, "Exploded View"
NO >> INSPECTION END
3.836V is significantly higher than the voltage of your cell-pair 4, which is 3.712V. This is the clearest case of a failure of this test that I have seen. [/quote]
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2012 Leaf SL; 36,000 miles. Battery replaced November 1st, 2016.

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