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Re: 2019 Leaf battery overheating

Posted: Sun Jan 05, 2020 3:56 am
by cwerdna
For the folks here complaining about Leaf DC FCing slowing down as the battery got too hot and me bringing up thermal management on Bolt, I just learned the guy I posted at viewtopic.php?p=575995#p575995 did the "Cannonball Run" in a Bolt across the US in about 79 hours. He most definitely did multiple DC FCs in a day.

Re: 2019 Leaf battery overheating

Posted: Sun Jan 05, 2020 11:54 am
by smkettner
Yup. Until Nissan adds active thermal management to the battery all need to know one L3 charge per day is a practical maximum.

Perfect for travelling about 1.5 to 2x the actual range per day. Very limited beyond that. That's just the way it is by design. Nothing is wrong with the vehicle.

Re: 2019 Leaf battery overheating

Posted: Sun Jan 05, 2020 12:24 pm
by webeleafowners
smkettner wrote: ↑
Sun Jan 05, 2020 11:54 am
Yup. Until Nissan adds active thermal management to the battery all need to know one L3 charge per day is a practical maximum.

Perfect for travelling about 1.5 to 2x the actual range per day. Very limited beyond that. That's just the way it is by design. Nothing is wrong with the vehicle.
I tend to agree. Our longest day on our regular road trip is exactly 554 km. Should be a good fit for the Eplus. Not so much for our 2016 SV but we do it. The chihuahua and I need to pee often anyway. 😜

Re: 2019 Leaf battery overheating

Posted: Sun Jan 05, 2020 5:17 pm
by OrientExpress
I have found that multiple L3 charges in one day only adds about 15-20 minutes to the total time for all three charge sessions compared to doing just one session per day.

Re: 2019 Leaf battery overheating

Posted: Sun Jan 05, 2020 10:13 pm
by DaveinOlyWA
webeleafowners wrote: ↑
Sun Jan 05, 2020 12:24 pm
smkettner wrote: ↑
Sun Jan 05, 2020 11:54 am
Yup. Until Nissan adds active thermal management to the battery all need to know one L3 charge per day is a practical maximum.

Perfect for travelling about 1.5 to 2x the actual range per day. Very limited beyond that. That's just the way it is by design. Nothing is wrong with the vehicle.
I tend to agree. Our longest day on our regular road trip is exactly 554 km. Should be a good fit for the Eplus. Not so much for our 2016 SV but we do it. The chihuahua and I need to pee often anyway. 😜
I did that distance and stopped to charge several times for 20 - 25 minutes. The E Plus "seems" to shed heat better but will need to do some Summer driving to know for sure. I will say the BMS is completely different than my 40 kwh LEAF. Nearly everything is different in how the car charges during various conditions.

Re: 2019 Leaf battery overheating

Posted: Mon Jan 06, 2020 6:55 am
by webeleafowners
DaveinOlyWA wrote: ↑
Sun Jan 05, 2020 10:13 pm
webeleafowners wrote: ↑
Sun Jan 05, 2020 12:24 pm
smkettner wrote: ↑
Sun Jan 05, 2020 11:54 am
Yup. Until Nissan adds active thermal management to the battery all need to know one L3 charge per day is a practical maximum.

Perfect for travelling about 1.5 to 2x the actual range per day. Very limited beyond that. That's just the way it is by design. Nothing is wrong with the vehicle.
I tend to agree. Our longest day on our regular road trip is exactly 554 km. Should be a good fit for the Eplus. Not so much for our 2016 SV but we do it. The chihuahua and I need to pee often anyway. 😜
I did that distance and stopped to charge several times for 20 - 25 minutes. The E Plus "seems" to shed heat better but will need to do some Summer driving to know for sure. I will say the BMS is completely different than my 40 kwh LEAF. Nearly everything is different in how the car charges during various conditions.
Typical day for us when we used the grand Cherokee was a 15 to 20 minute morning coffee, walk and pee brake, a half hour lunch and a 15 minute afternoon break. There is lots of charging opportunities along the way. We’ll charge during all our breaks. We tend to set the cruise at about 105 kmh.

Re: 2019 Leaf battery overheating

Posted: Sat Feb 01, 2020 8:33 am
by metricus
OK, so I figured I should let you guys know what i've been doing in the meantime.
Sorry for being offline for so long. Life...

In short, we leased a Model 3. Dual Motor, Long Range (75kWh)
I still have my leaf (2y lease ends May 2021) but we sold our Prius and now we are 100% gas-free.

The Tesla came on Dec 19. This goes off-topic but I love it.

So the formula is simple. Leaf cannot be counted on for longer trips due to the lack of thermal management. But it's a pleasant vehicle to drive for decent distances around the residence. I know that if I have to DC charge I am opening myself to frustration as I never know how long it will take me. So i plan to not have to.

Tesla on the other hand has no problem whatsoever with long hauls. I had to pick-up my girls from EWR and JFK before Christmas and all went super smooth. The trip to EWR and back, i did without Supercharging. Going to JFK, I had to Supercharge while waiting for her to clear customs. Charging at 90 kW is a breeze. It can do 150 kW but I never experienced that. Whatever...

At home I use the same Siemens wall unit I used since my first Leaf. It delivers 30 A which is not the max Tesla can take (48A) but i find it sufficient. Not having to table 500$+ install for the Tesla wall unit makes me happy. FYI the model 3 comes with a little adapter to a SAE J1772 plug so i was ready to charge from the moment we brought it home.

Besides that, you have no idea how 170W/kg feels in comparison to only 70W/kg for the Leaf. Woosh!

Open for questions if anyone has any...

Re: 2019 Leaf battery overheating

Posted: Sun Feb 16, 2020 3:30 pm
by TexasLeaf
As many of you are aware, I traded in my 2018 Leaf in for a 2019 Niro EV. I thought I might share with you one day in the life of my Niro EV. Last December I traveled by interstate from Socorro, NM to Fort Worth, TX in one day.

The total distance was 808 miles and I traveled the speed limit the whole way except for the first leg. The first leg was 201 miles and the temperature was below freezing so I kept my speed to 60 mph. I made six consecutive CCS fast charging stops, I typically charged from 10% to 60% and my charging rate always peaked out at about 75 kW after the battery warmed up.

This would have been a challenging day even in a gas car but there wasn't a hint of the Niro EV traction battery getting hot. The Niro EV is definitely living up to it's billing. I have no regrets for abandoning my one year old Nissan Leaf and going with the Niro EV.

Re: 2019 Leaf battery overheating

Posted: Sun Feb 16, 2020 4:16 pm
by DougWantsALeaf
Thanks for the Niro report.

We sat in the Niro finally today. The storage was a bit less than I thought it would be watching the online videos. Leaf is definirme still bigger. I do like the fact it has rear vents. Interior volume had both some pluses and minuses (remember we jam 3 large kids in the back).

Hoping we will start getting some battery longevity/degradation from the Kona/Niro soon as this was a new pack for Kia last year. Hoping we will as well get the Niro in the Midwest by end of this year.

Re: 2019 Leaf battery overheating

Posted: Sun Feb 16, 2020 5:57 pm
by salyavin
Just want to make sure you know the cold weather package gives rear floor vents. We don't want an SUV but cargo room is important (kid crap), so the LEAF does well there. It is still winter but I have not had big heating issues doing fast charging in the plus so no real road trip issues and EA feeds me in the 70s very similar to the Niro but cheaper being Chademo (Niro tends to get charged one tier up). Summer we'll have to see how the plus does in my climate, that lack of thermal management may get me. I've done 1100 miles in one day a gasser (prius) a number of times, sometimes we swap drivers after 6 or 8 hours. A LEAF could not pull that off even if it was all EA feeding 75-77kw all the way. I don't really plan to do that trip any more (relatives there are no longer with us) but two fast charges in the day via interstate (high speed) is no problem in the winter. In the winter I see no sign of any heat issues.