metricus
Posts: 94
Joined: Wed May 15, 2019 1:51 pm
Delivery Date: 28 Apr 2019
Leaf Number: 307046
Location: Reading, PA

2019 Leaf battery overheating

Wed May 15, 2019 3:18 pm

I have leased my second leaf 2 weeks ago. My previous one was a 2016 - 24kwh one.

I was a happy customer until I got my 2019 one. I had never heard of Rapidgate or ever needed to Google anything about my leaf. Took quite a few longer trips with repeated QC and never had an issue to report.

With my 2019 one the first QC I did i found my battery temp gauge all the way up to the first red line.

I see a lot of talk about 2018 overheating. Any similar experience with 2019?

So here is a quick description of my test drive I did yesterday. FYI I live in PA and the temp outside was around 14 Celsius (50s).

I picked my car from the dealership where it stayed overnight to be "checked" and took a trip to Newark Airport and back to dealership and then home. The total trip was around 225 miles. Speeds were turnpike style 65-70.

Started at 83% charge and drove 62 miles to first charging station on NJ turnpike.
It charged at 35kW and I went up to 75% until the EVGo charger shut me down after 30 min.
After this charge the temp gauge was 3/4 up (40 C) and stayed there until next charge.
Next stage was another some 60 miles.
Second charge was at 26 kW and 30 minutes got me from 28% to 64%
Temp gauge went up to 46 C after the charge and remained there during the next stage
The trip back to the dealer was 54 miles
At the dealer the charge was down to 19 kW and took me from 16% to 55% in about 40 mins
After this charge the temp was at first red line (50 C).
I had enough juice to get home but since there is another QC on the way I tried plugging in.
At this point the charge was only 14 kW, the temp gauge was on red and stayed there until I finally got home. I did not charge here for more than a few minutes.

I read a lot about Rapidgate these past days and understand that there is no cooling etc etc. i am also an engineer so you don't need to start with the basics.

1. How does this behavior compare to Rapidgate?
2. Do other 2019 owners experience the same? Is this a car problem or just "normal"?
3. I have started a Nissan ticket. Can I expect anything? Any advice on what to ask for?

Thank you!

LeftieBiker
Moderator
Posts: 12205
Joined: Wed May 22, 2013 3:17 am
Delivery Date: 30 Apr 2018
Location: Upstate New York, US

Re: 2019 Leaf battery overheating

Wed May 15, 2019 3:21 pm

This sounds like the "Rapidgate" charging issue, and while it's outrageous that it happens even with lower ambient temps. UK drivers found the same thing happening in lower temps than did you.
Scarlet Ember 2018 Leaf SL W/ Pro Pilot
2009 Vectrix VX-1 W/18 Leaf modules, & 3 EZIP E-bicycles.
PLEASE don't PM me with Leaf questions. Just post in the topic that seems most appropriate.

cwerdna
Posts: 9359
Joined: Fri Jun 03, 2011 4:31 pm
Delivery Date: 28 Jul 2013
Location: SF Bay Area, CA

Re: 2019 Leaf battery overheating

Wed May 15, 2019 4:04 pm

When you talk about these temperatures and the "gauge", are you getting them from Leaf Spy or some other tool that reads the sensors or are they guesses?

'19 Bolt Premier
'13 Leaf SV w/premium package (owned)
'13 Leaf SV w/QC + LED & premium packages (lease over, car returned)

Please don't PM me with Leaf questions. Just post in the topic that seems most appropriate.

metricus
Posts: 94
Joined: Wed May 15, 2019 1:51 pm
Delivery Date: 28 Apr 2019
Leaf Number: 307046
Location: Reading, PA

Re: 2019 Leaf battery overheating

Wed May 15, 2019 5:20 pm

I have not installed the Leaf spy dongle yet. Too early for this. I have used the image I found circulating on the net with the approximate temps based on the position of the gauge.

As I can see that gauge is not linear but rather incremental. There are not too many positions for it.

For now no am trying to get a sense if the car has issues or this is "normal behaviour".

cwerdna
Posts: 9359
Joined: Fri Jun 03, 2011 4:31 pm
Delivery Date: 28 Jul 2013
Location: SF Bay Area, CA

Re: 2019 Leaf battery overheating

Wed May 15, 2019 5:50 pm

If really want to know what's going on w/battery temps, I strongly recommend Leaf Spy.

I can't speak to the '18+ Leaf temp gauge but the '11 to '17 one had huge overlapping ranges. Click on Battery Temperature Gauge at http://www.electricvehiclewiki.com/wiki/battery-d1/. And yes, I do use Leaf Spy and can tell you the temp gauge on the '13 is crap.

'19 Bolt Premier
'13 Leaf SV w/premium package (owned)
'13 Leaf SV w/QC + LED & premium packages (lease over, car returned)

Please don't PM me with Leaf questions. Just post in the topic that seems most appropriate.

metricus
Posts: 94
Joined: Wed May 15, 2019 1:51 pm
Delivery Date: 28 Apr 2019
Leaf Number: 307046
Location: Reading, PA

Re: 2019 Leaf battery overheating

Wed May 15, 2019 5:51 pm

Follow-up on the previous reply: Frankly I think the accuracy of the temp gauge is less relevant at this point. The main problem is the fact that a 220 mile trip caused the car to decrease the charging power to as low as 14 kW. the reason for this is irrelevant for the user.

My problem snowballs after this: EVGO kicks me out after 30 minutes. which means that at a slower power I get less energy in that amount of time.
This means that I have to use my credit card to charge to the level i need which makes the NCTC program a false advertisement.

False advertisement is also the claim that the car can be charged in less than 30 mins on QC because that can only happen once per day if at all. in my case the first charge was at 35 kW not at 43 or "up to 50 kW" as they advertise.

And i'm not even mentioning the fact that i simply cannot plan a trip with any decent accuracy because I will never know at what rate the car decides to charge. So if i have to be at the airport at 5PM i can leave either too late or too early depending solely on the "mood" of my Leaf.

SageBrush
Posts: 4219
Joined: Sun Mar 06, 2011 2:28 am
Delivery Date: 13 Feb 2017
Location: Colorado

Re: 2019 Leaf battery overheating

Wed May 15, 2019 5:57 pm

metricus wrote:3. I have started a Nissan ticket. Can I expect anything?

Yes
"We checked out your car thoroughly and everything is fine."

The LEAF is a ( hobbled, at that) one DCFC per trip car.
If your use case is more than that you leased the wrong car.
2013 LEAF 'S' Model with QC & rear-view camera
Bought off-lease Jan 2017 from N. California
Car is now enjoying an easy life in Colorado
03/2018: 58 Ahr, 28k miles
11/2018: 56.16 Ahr, 30k miles
-----
2018 Tesla Model 3 LR, Delivered 6/2018

metricus
Posts: 94
Joined: Wed May 15, 2019 1:51 pm
Delivery Date: 28 Apr 2019
Leaf Number: 307046
Location: Reading, PA

Re: 2019 Leaf battery overheating

Wed May 15, 2019 6:01 pm

SageBrush wrote:
metricus wrote:3. I have started a Nissan ticket. Can I expect anything?

Yes
"We checked out your car thoroughly and everything is fine."

The LEAF is a ( hobbled, at that) one DCFC per trip car.
If your use case is more than that you leased the wrong car.


I was afraid of that!
Sadly nobody tells you this when they sell it.

cwerdna
Posts: 9359
Joined: Fri Jun 03, 2011 4:31 pm
Delivery Date: 28 Jul 2013
Location: SF Bay Area, CA

Re: 2019 Leaf battery overheating

Wed May 15, 2019 6:18 pm

Out of curiosity, is this a 40 kWh car or a 62 kWh Leaf Plus?

Many other EVs have active thermal management... Bolt does but its DC FCing isn't that fast (from what I hear). In the case of https://electricrevs.com/2018/07/17/wat ... -to-55-kw/, it may start slowing down after 55% SoC. And, I hear it's quite slow if the battery's cold, until it warms up enough.

'19 Bolt Premier
'13 Leaf SV w/premium package (owned)
'13 Leaf SV w/QC + LED & premium packages (lease over, car returned)

Please don't PM me with Leaf questions. Just post in the topic that seems most appropriate.

LeftieBiker
Moderator
Posts: 12205
Joined: Wed May 22, 2013 3:17 am
Delivery Date: 30 Apr 2018
Location: Upstate New York, US

Re: 2019 Leaf battery overheating

Wed May 15, 2019 6:39 pm

I'm sure it's a 40kwh Leaf. That degree of throttling of charge rate isn't likely to happen in cool temps with the ePlus.

The 2018+ temp "gauge" is even more vague than the previous one, but it seems consistent enough. There are 12 segments again, but they aren't visually delineated so it looks more like a creeping bar gauge. Once you get to the Red - especially in mild ambient temps! - it's clear enough that the pack is hot.

And, of course, Nissan continues to insist that very few North American drivers are complaining about the issue...
Scarlet Ember 2018 Leaf SL W/ Pro Pilot
2009 Vectrix VX-1 W/18 Leaf modules, & 3 EZIP E-bicycles.
PLEASE don't PM me with Leaf questions. Just post in the topic that seems most appropriate.

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