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Re: Post Your Battery Degradation Results

Posted: Sat Oct 28, 2017 2:06 pm
by Armand
Just noticed the 4th bar has gone. Not sure how to tell the precise date and time. I stopped using the LeapSpy Pro regularly a while back.

AHr 43.13
SOH 65%
ODO 60,264 Mi
HX 44.6%
Delivery date 8/26/2011

Short historical AHr:
Aug 2017 43.8
Jan 2017 46.0
Aug 2016 46.4

I'm out of capacity warranty by 14 months and about 300 miles but i called Nissan earlier today and left a message. Hopefully i can get some assistance. Any tips on how to deal with Nissan would be appreciated.

Re: Post Your Battery Degradation Results

Posted: Sat Oct 28, 2017 4:28 pm
by arnis
I think now is the right time to report my results.
Today I passed 100 000km mark (62k miles) with my 2014 EU Leaf.
104 QC sessions (doesn't actually matter, trust me) and...
93% SOH 93,7% Hx (Hx always leads, SOH follows).
Even though numbers almost went down to 91% in summer, they came back, as the
always do (same last summer), right before BMS halts the calculation (no refresh below 15*C).
So I'm stuck with that number likely for the whole winter. In summer, it constantly
jumps up and down. It usually drops if SOC is cycled between 20-80% and if it
drifts off, it returns REALLY FAST after one long QC session or one deep cycle (2,6-2,8V up to 4.14V).
3% difference (both SOH and Hx) within 100km noticed this summer.

Due to climate, 98% probability that battery is between -5C up to +35C (3-6 bars).
Always charged to 80%. Often discharged below VLBW. Rarely charged above 90%.
Immediately charging after commute ends.
Third of commutes use 15% of battery, another third 70%. (+10% for both in winter).
I do not want to hear recommendations. Results speak for themselves.

So I really lost around 2kWh of capacity. And regen availability is compromised
when battery is below +5C and SOC above 80% simultaneously (less than 25kW).
When pack was newer, regen limit usually kicked in below 0C and above 85%.
In summer (5-6 temp bars), regen is always all bubbles below 95% SOC.

Re: Post Your Battery Degradation Results

Posted: Tue Dec 05, 2017 10:15 pm
by Miriamlam
SOH 100%
Hx 101.87
47,600 Kms
2014 leaf s
23qc
1200 1/2 charges
Temperate climate on Vancouver island
Commute is 75kms round trip which uses 1/2 my battery. 95% of the time I charge to 100%

Re: Post Your Battery Degradation Results

Posted: Tue Dec 05, 2017 10:32 pm
by ElectricEddy
Miriamlam wrote:SOH 100%
Hx 101.87
47,600 Kms
2014 leaf s
23qc
1200 1/2 charges
Temperate climate on Vancouver island
Commute is 75kms round trip which uses 1/2 my battery. 95% of the time I charge to 100%


Excellent #'s, what are the AH ?
Does your commute take you over the Malahat?

Re: Post Your Battery Degradation Results

Posted: Tue Dec 05, 2017 10:35 pm
by DaveinOlyWA
Miriamlam wrote:SOH 100%
Hx 101.87
47,600 Kms
2014 leaf s
23qc
1200 1/2 charges
Temperate climate on Vancouver island
Commute is 75kms round trip which uses 1/2 my battery. 95% of the time I charge to 100%


got me beat.
SOH 100%
Hx 96
27,312 miles
2016 LEAF S
241 QCs
255 L1/L2's

Re: Post Your Battery Degradation Results

Posted: Wed Dec 20, 2017 4:39 pm
by cmwade77
Ok, here is mine:
SOH 101.97%
Hx 100.05%
AHr 66.69
49,090 miles
2013 LEAF SL? (We bought the car used and it has some features that are only in the SL and up models and missing some that are normally in the SL model)
265 QCs
1155 L1/L2's

Admittedly, the battery was replaced about a week ago under the capacity warranty.

Re: Post Your Battery Degradation Results

Posted: Thu Dec 21, 2017 12:39 pm
by Tonyt
cmwade77 wrote:Ok, here is mine:
SOH 101.97%
Hx 100.05%
AHr 66.69
49,090 miles
2013 LEAF SL? (We bought the car used and it has some features that are only in the SL and up models and missing some that are normally in the SL model)
265 QCs
1155 L1/L2's

Admittedly, the battery was replaced about a week ago under the capacity warranty.


Was your early or late 2013 production? Sorry if you posted the info before.

Re: Post Your Battery Degradation Results

Posted: Thu Dec 21, 2017 2:52 pm
by stevek
Here's mine for discussion:

2017 in SV So. FL
Build 4/17 purchased 5/17

ODO 4584
GID 325 91.0%
SOH 90%
AHr 72.24
392 V
Hx 86.54
39 QC/152 L1-L2
Temp always 6 bars
Mostly around town, few 80mi trips

Steve

Re: Post Your Battery Degradation Results

Posted: Thu Dec 21, 2017 3:54 pm
by goldbrick
stevek wrote:Here's mine for discussion:

2017 in SV So. FL
Build 4/17 purchased 5/17

ODO 4584
GID 325 91.0%
SOH 90%
AHr 72.24
392 V
Hx 86.54
39 QC/152 L1-L2
Temp always 6 bars
Mostly around town, few 80mi trips

Steve


That's interesting. If you multiply the AHr by the voltage it comes out to 28kWh, which is no where near 90%. I wonder if the low SOH is due to the low Hx value? Or maybe I'm completely confused by what the AHr and V actually mean? :shock:

Re: Post Your Battery Degradation Results

Posted: Thu Dec 21, 2017 5:10 pm
by DaveinOlyWA
goldbrick wrote:
stevek wrote:Here's mine for discussion:

2017 in SV So. FL
Build 4/17 purchased 5/17

ODO 4584
GID 325 91.0%
SOH 90%
AHr 72.24
392 V
Hx 86.54
39 QC/152 L1-L2
Temp always 6 bars
Mostly around town, few 80mi trips

Steve


That's interesting. If you multiply the AHr by the voltage it comes out to 28kWh, which is no where near 90%. I wonder if the low SOH is due to the low Hx value? Or maybe I'm completely confused by what the AHr and V actually mean? :shock:


kwh formula uses 360 volts nominal for calc