2018 40kwh Nissan Leaf made it til 195,000 miles

[Caliwish]

Looks like you tuber EV164 Hiroshi 2018 leaf 40kwh lasted 315,149 km until his battery started to fail from swelling battery packs.



He thought alot of DC fast charging was the culprit. What is the experience on this forum when it comes to battery longevity? ( Currently I have 2019 40kwh Leaf with 85,000 miles with full bars).

 

[nlspace]

Considering the look of his swollen glands it is likely that the DTC for HV leakage was thrown, which would disable the car until repaired.

His pack seemed to be well balanced for so many miles and the reduced capacity. The 12V battery voltage seems too low at 12.3V, such as the DCDC converter in the PDM is degraded or disabled due to the swollen cells DTC.

To travel that far requires "fuel" so lots of charging, both DCQC and AC, he was charging more than twice a day over 6 years.

 

[Caliwish]

Considering the look of his swollen glands it is likely that the DTC for HV leakage was thrown, which would disable the car until repaired.

His pack seemed to be well balanced for so many miles and the reduced capacity. The 12V battery voltage seems too low at 12.3V, such as the DCDC converter in the PDM is degraded or disabled due to the swollen cells DTC.

To travel that far requires "fuel" so lots of charging, both DCQC and AC, he was charging more than once a day over 6 years.

So would you say that the battery failure is most likely do to frequent dc or ac charging or happenstance?

Anyone able to beat 195,000 miles on a leaf? What’s your secret?

 

[nlspace]

Avoid high temperatures in the battery pack if possible, due to the lack of a cooling system/thermal control system. He showed less capacity loss for a tesla with the same mileage. High temperature are not a friend of any type of battery (higher reaction rates).

Also don't charge lithium to "100%" unless needed. Trying to stuff a few more ions into the electrode matrix is in the realm of decreasing returns--more effort and stress to the cells for a tiny amount of mostly unusable energy (cell voltage drops so rapidly from "100%").

 

[Caliwish]

Avoid high temperatures in the battery pack if possible, due to the lack of a cooling system/thermal control system. He showed less capacity loss for a tesla with the same mileage. High temperature are not a friend of any type of battery (higher reaction rates).

Also don't charge lithium to "100%" unless needed. Trying to stuff a few more ions into the electrode matrix is in the realm of decreasing returns--more effort and stress to the cells for a tiny amount of mostly unusable energy (cell voltage drops so rapidly from "100%").

Avoid high temperatures in the battery pack if possible, due to the lack of a cooling system/thermal control system. He showed less capacity loss for a tesla with the same mileage. High temperature are not a friend of any type of battery (higher reaction rates).

Also don't charge lithium to "100%" unless needed. Trying to stuff a few more ions into the electrode matrix is in the realm of decreasing returns--more effort and stress to the cells for a tiny amount of mostly unusable energy (cell voltage drops so rapidly from "100%").

So I asked him how many quick charges and he replied that about half were quick charges. “ 1570 QC and 1793 NC”

 

[nlspace]

i posted the screenshot of laef spy showing 1570 QC and 3586 NC

 

[Caliwish]

So I asked him how many quick charges and he replied that about half were quick charges. “ 1570 QC and 1793 NC”

Thanks

 

[Oostenrijker]

Actually it's a bit sad that so many Leaf's don't last that long, due to the battery pack probably getting very hot from the frequent fast charging. I think when only doing AC charging and having very energy efficient driving style? Then I guess the battery pack should have easily lasted 500.000kms.

 

[Caliwish]

Yes, it is sad. Luckily I live in Minnesota and only level 2 charge my leaf. I am hoping to join the 500,000km club one day😊

 

[Tomášek]

He wrote to me that he made usually one day 600km trip in one month. Which means multiple fast chargings in one day.

 

[Tomášek]

i posted the screenshot of laef spy showing 1570 QC and 3586 NC

I think NC in reality was half that number like somebody wrote in other post. If using timer, it count charging twice because the system makes short charging test right after setting the timer.

 

[nlspace]

So Laef Spy is telling a Lie? i don't think so.

So the car counts 2 NC for every plug-in? Need to see some proof of that claim. Plus Hiroshi don't seem to be a timer-setter sort of driver--he was driving the balls off of those bearings night and day.

My Japanese is not so good, but if you watched the video you would see that Hiroshi averaged over 80 miles a day over 6.5 years, with details shown for his heroic 7 QC in one day. With lots of stop and go in big-city traffic he was a road warrior and not gonna hit EPA range estimates. Not an eco-miler either so his average charge rate of over twice a day makes sense to me.

 

[cornbinder89]

According to the documentation that is provided on the Leafspy program (IIRC it is in the "help" section) two charges are recorded when the timer is used, one when the cord is plugged in and one when the timer starts charging. If immediate charge is used, then it records a single increase.
I am guessing it is counting contactor actuations, you can hear the contactor close, then open when the cord is attached and the timer is set.

 

[MikeinPA]

Say 4 miles/kwh, and an average usable capacity on the pack of 34 kwh, that's about 1500 full cycle equivalents, Good, but nothing special.

 

[Tomášek]

So Laef Spy is telling a Lie? i don't think so.

So the car counts 2 NC for every plug-in? Need to see some proof of that claim. Plus Hiroshi don't seem to be a timer-setter sort of driver--he was driving the balls off of those bearings night and day.

My Japanese is not so good, but if you watched the video you would see that Hiroshi averaged over 80 miles a day over 6.5 years, with details shown for his heroic 7 QC in one day. With lots of stop and go in big-city traffic he was a road warrior and not gonna hit EPA range estimates. Not an eco-miler either so his average charge rate of over twice a day makes sense to me.

I did not tested it to be correct but have read about it. But the truth is that when you set timer the car makes fist short test-charging. So with high probability this counts as one charging too in the data.

 

[DougWantsALeaf]

Excited to see how far his Plus model will go now. I have had plenty of engines go earlier than 200K miles, so really not bad. I believe there were a few gen 1 Leafs pushed to 200K miles too.

 

[Bombastinator2]

I’ve got something like 36k atm and my battery is around 95%. Hoping I get 200k out of mine. That would be nice. I’ve only DC charged it once, but I bought it used so I don’t know how it was treated before me.

 

[DougWantsALeaf]