hmbay
Posts: 5
Joined: Fri Jan 29, 2021 8:17 am
Delivery Date: 24 Dec 2020
Leaf Number: 300831
Location: Half Moon Bay
Contact: Website

RapidGate Torture Test of Late 2020 Leaf SV

Tue Feb 16, 2021 11:04 am

I just leased an SV Tech on Christmas eve 2020 and knew what I was getting into for 2 years - but also wanted to see exactly how bad things could get in my area - Northern California. I did a triangle between Half Moon Bay, Hollister EVgo, Seaside EVgo, Santa Cruz EVgo, and then back to HMB. Used the EVgo DC charge systems at each stop. I was either driving fast or connected to an EVgo DC system for the whole time which was about 7 hours total. Ambient temperature was around 57F the whole trip. I didn't have Leaf Spy at the time so I don't have specific pack temperatures but the back-to-back DC plus fast highway driving (60-75) is your worst case for overheating.

Location, ODO, Charge Level, Charge rate
Left Half Moon Bay, 1445, 100% @ 11am
- mostly highway at 50-65mph (via Highway 1, not 101)
Hollister, 1534, 30% => 60%, DC 44kW charge rate for 17 minutes = 13.2kWh
- slow country road 30-40mph & highway 50-60mph
Seaside, 1589, 13% => 76%, DC 31kW charge rate for 42 minutes = 20.15kWh
- mostly freeway at 70-75mph
- on the 70mph climb of the steep grade near La Selva, the turtle appeared with the high temp warning to slow down, assume pack temp was in the red
Santa Cruz, 1626, 41% => 57%, DC 15kW charge rate for 20 minutes = 4.84kWh
Santa Cruz, 1629, 57% => 60%, Level 2 6.6kW charge rate for 20 minutes = 1.2kWh
Half Moon Bay, 1676, 15% @ 6pm
- the pack temperature was at the top tick just at the red boundary from La Selva to Half Moon Bay

Works out to 231 miles using 73.4kWh.

Lessons learned... I was too impatient at Hollister - should have waited a few more minutes for 80%, and then the second DC would have been less painful, and the 3rd DC may not have been necessary. I'm going to redo the trip with a smarter charging approach and see what I end up with.

I'm posting to let people know what a worst case trip is like where you are literally either driving fast or doing a DC charge for 7 hours. Not complaining so the Leaf police don't need to write me a ticket. Figures are approximate - I didn't recalculate for additional accuracy.
Last edited by hmbay on Thu Feb 18, 2021 3:05 pm, edited 1 time in total.
2020 Nissan Leaf SV Tech
previously 2015 FIAT 500e

SageBrush
Forum Supporter
Posts: 6265
Joined: Sun Mar 06, 2011 2:28 am
Delivery Date: 13 Feb 2017
Location: NM

Re: RapidGate Torture Test of Late 2020 Leaf SV

Tue Feb 16, 2021 11:14 am

Try again in 90F+ OAT, or 100F+ to capture typical summer in much of the USA. You know ... when over-heating is the topic of the day.
Your post is not a 'torture test' in the least; it does however point out that the LEAF overheats even in the winter. Bjorn Nyland found the same ... in winter Norway.

By the way, your post would make sense if you learn the difference between kW and kWh
2013 LEAF 'S' Model with QC & rear-view camera
Bought Jan 2017 from N. California
Two years in Colorado, now in NM
03/18: 58 Ahr, 28k miles
11/18: 56.16 Ahr, 30k miles
09/20: 54.3 Ahr; 38k miles
-----
2018 Tesla Model 3 LR, Delivered 6/2018

cwerdna
Posts: 12019
Joined: Fri Jun 03, 2011 4:31 pm
Delivery Date: 28 Jul 2013
Location: SF Bay Area, CA

Re: RapidGate Torture Test of Late 2020 Leaf SV

Tue Feb 16, 2021 1:57 pm

Sage: OP lists his location as Half Moon Bay. It doesn't get warm over there. See https://www.mynissanleaf.com/viewtopic. ... 24#p533224.
hmbay wrote:
Tue Feb 16, 2021 11:04 am
Hollister, 1534, 30% => 60%, DC 44kWh for 17 minutes = 13.2kW

...
Santa Cruz, 1629, 57% => 60%, Level 2 6.6kWh for 20 minutes = 1.2kW
Half Moon Bay, 1676, 15% @ 6pm
...
Works out to 231 miles using 73.4kW.
Huh.... do you have your units mixed up?

You said you have a '20 SV. How could you put in 44 kWh within 17 minutes? Non-Plus Leafs of that generation only have 40 kWh of battery capacity, not of all that is user accessible.

If one charges at a steady 44 kW for 17 minutes, 12.47 kWh should have come out of the "wall". 44 kW * 17 minutes/60 minutes per hour = 12.47 kWh

If you watched an EVgo DC FC's display, you should've seen the power level vary (probably ramping up as the voltage rose and down as the car throttled) and the kWh counter (which is of energy) rise as time elapsed.

What do you mean by "Level 2 6.6kWh for 20 minutes = 1.2kW"? Do you mean 6.6 kW for 20 minutes --> 1.2 kWh? That math doesn't make sense either. If you had a 6.6 kW charge rate for 20 minutes/60 minutes per hour --> 2.2 kWh should've come out of the "wall". Or, did you get throttled? If it was at public AC charging, most L2 workplace and public charging I've seen is only at 208 volts, so you typically only get about 6 kW...

If you look at Charge history within your EVgo app, it will list the duration and "power" (they actually should be using the word energy). For "power" after cost, they list how many kWh were dispensed in that session.

kW is a unit of power. kWh is a unit of energy.

No idea what "Works out to 231 miles using 73.4kW" means.

'19 Bolt Premier
'13 Leaf SV w/premium (former)
'13 Leaf SV w/QC + LED & premium (lease over)

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

danrjones
Posts: 1048
Joined: Wed Apr 17, 2019 8:02 am
Delivery Date: 17 Jun 2019
Location: Ridgecrest, CA

Re: RapidGate Torture Test of Late 2020 Leaf SV

Wed Feb 17, 2021 8:11 am

SageBrush wrote:
Tue Feb 16, 2021 11:14 am
Try again in 90F+ OAT, or 100F+ to capture typical summer in much of the USA. You know ... when over-heating is the topic of the day.
Your post is not a 'torture test' in the least; it does however point out that the LEAF overheats even in the winter. Bjorn Nyland found the same ... in winter Norway.

By the way, your post would make sense if you learn the difference between kW and kWh
I agree, the scenario was not even close to worst case. For me, worst case means summer temperatures. Which in my area is 110F to 115F, day in and day out.
2018 Leaf SV Pearl White with Tech and All Weather, Purchased New on 5/3/19

hmbay
Posts: 5
Joined: Fri Jan 29, 2021 8:17 am
Delivery Date: 24 Dec 2020
Leaf Number: 300831
Location: Half Moon Bay
Contact: Website

Re: RapidGate Torture Test of Late 2020 Leaf SV

Thu Feb 18, 2021 3:20 pm

I have corrected the op as I got the units backwards - kW vs kWh. And as was pointed out, it rarely hits 90-100 in coastal Northern California here but I still managed to get it to overheat in 57F ambient after only 2 DC charges. The moral is that this can happen anywhere from Norway to Phoenix.
2020 Nissan Leaf SV Tech
previously 2015 FIAT 500e

SageBrush
Forum Supporter
Posts: 6265
Joined: Sun Mar 06, 2011 2:28 am
Delivery Date: 13 Feb 2017
Location: NM

Re: RapidGate Torture Test of Late 2020 Leaf SV

Thu Feb 18, 2021 3:50 pm

hmbay wrote:
Thu Feb 18, 2021 3:20 pm
I have corrected the op as I got the units backwards - kW vs kWh.
:: two thumbs up ::
2013 LEAF 'S' Model with QC & rear-view camera
Bought Jan 2017 from N. California
Two years in Colorado, now in NM
03/18: 58 Ahr, 28k miles
11/18: 56.16 Ahr, 30k miles
09/20: 54.3 Ahr; 38k miles
-----
2018 Tesla Model 3 LR, Delivered 6/2018

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