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Re: Requesting Hx values for all 40/62 kwh LEAFers

Posted: Fri Mar 19, 2021 2:50 pm
by Learjet
DaveinOlyWA wrote:
Wed Mar 17, 2021 5:28 pm
Learjet wrote:
Tue Mar 16, 2021 6:16 am
Build date 2/19, SL Plus

Image
Holy moley! You win the prize for lowest Hx!

Now, we can say that lack of DC charging is why and yes, DC charging seems to be the easiest way to raise it up BUT, I have only DC'd for 4 mins in the past 6 months and mine is not going down.

What are your charging habits? I see you don't drive a whole lot? What is your average miles per day driven?
I bought the car 1 year ago...so it sat on the dealers lot for a year. I don't know how they kept it charged, but it only had 20 miles or so on it and it was 100% when I dropped in to look at it....no appointment. In one year I drove 9,300 miles.

The hx on my first leafspy view was 95.55% with less than a 1,000 miles on the car....I keep a file with all the screen shots...looks like it has steadily dropped to the number above.

I only DCQC once from 30% to 80%, otherwise I keep the car mostly between 20% and 80% charging at home with the Nissan EVSE on a 240 outlet. About every month or two I will fully charge to 100% for a longer road trip.

So are lower Hx number good? LOL

Re: Requesting Hx values for all 40/62 kwh LEAFers

Posted: Fri Mar 19, 2021 7:31 pm
by lorenfb
Learjet wrote:
Fri Mar 19, 2021 2:50 pm
So are lower Hx number good? LOL
It depends how you define it. With Leaf 1 it tracked decreasing SOH, and based on longitudinal impulse battery resistance data it represented battery conductance.

Re: Requesting Hx values for all 40/62 kwh LEAFers

Posted: Sat Mar 20, 2021 1:08 pm
by DaveinOlyWA
Learjet wrote:
Fri Mar 19, 2021 2:50 pm
DaveinOlyWA wrote:
Wed Mar 17, 2021 5:28 pm
Learjet wrote:
Tue Mar 16, 2021 6:16 am
Build date 2/19, SL Plus

Image
Holy moley! You win the prize for lowest Hx!

Now, we can say that lack of DC charging is why and yes, DC charging seems to be the easiest way to raise it up BUT, I have only DC'd for 4 mins in the past 6 months and mine is not going down.

What are your charging habits? I see you don't drive a whole lot? What is your average miles per day driven?
I bought the car 1 year ago...so it sat on the dealers lot for a year. I don't know how they kept it charged, but it only had 20 miles or so on it and it was 100% when I dropped in to look at it....no appointment. In one year I drove 9,300 miles.

The hx on my first leafspy view was 95.55% with less than a 1,000 miles on the car....I keep a file with all the screen shots...looks like it has steadily dropped to the number above.

I only DCQC once from 30% to 80%, otherwise I keep the car mostly between 20% and 80% charging at home with the Nissan EVSE on a 240 outlet. About every month or two I will fully charge to 100% for a longer road trip.

So are lower Hx number good?
LOL
Have no idea. Unlike the Gen One's, the Hx is reacting completely different. The time on the dealer lot is interesting along with at least some time just sitting at 100%. Wish we knew whether your visit was coincidental or they simply kept it topped off after every test drive?

Like anything, its looking like we simply have to keep tracking yours and see where its at next year?

Re: Requesting Hx values for all 40/62 kwh LEAFers

Posted: Sat Mar 20, 2021 4:39 pm
by DougWantsALeaf
Had an interesting experience today. During my second efficienct test, the car decided it was bms adjustment time, and moved the SoH down while driving (.16%). This caused my Leafspy trip log to reflect a higher gid difference, though show same efficiency as my prior run on the dash.

Aero covers on now for my EV01+ wheels.

https://drive.google.com/file/d/10XaT8J ... p=drivesdk

Re: Requesting Hx values for all 40/62 kwh LEAFers

Posted: Mon Mar 22, 2021 10:54 am
by Astros
DougWantsALeaf wrote:
Fri Mar 19, 2021 12:53 pm
Pretty good SoH. Do you DC charge at all? Astros are you in Texas?
We DC charge only on trips, but then we need 2-4 in a day. The Plus is *much* better than our previous Leafs for that, but we still can get up into the red and ~129F by the end of the day. We live in Seattle, and take most of our trips down to Oregon, with the longest trips being down to Ashland. Most of the miles are from commuting, and once the SoC gets down to mid 30% we plug in and charge to 100%. We typically plug in about twice a week.

Re: Requesting Hx values for all 40/62 kwh LEAFers

Posted: Mon Mar 22, 2021 11:24 am
by DougWantsALeaf
I had a 35 mile drive at ~55 mph, and starting with a battery temp of 69F (just finished a l2 charge and car was garaged). Temps were 35F ambient. During the drive battery temps reduced 2F from the hottest sensor. Not amazing cooling, but with a 35F temp differential, there was measursble cooling. This is where the lower energy draw helps a bit in how far you can get reasonably in a day.

Iowa has multiple 200amp DC Chademo chargers available now across the state, so have been trying with the idea of trying a 1000km drive. 3 stops on a 35-40F day to see if I could do 3 back to back stops. The question is what speed to drive to minimize end to end time.

In heat of summer (90F), I doubt I would get even 2 full stops (to 75%) if battery started at 80F. I think in summer, you would need to alternate L2 and DC charging stops.

Re: Requesting Hx values for all 40/62 kwh LEAFers

Posted: Tue Mar 23, 2021 5:14 pm
by salyavin
SOH 93.76
HX 114.76
42QCs 257L1/2

Learjet's with such low mileage and 2 QCs is amazing low. must be the sitting like you said.

Re: Requesting Hx values for all 40/62 kwh LEAFers

Posted: Thu Mar 25, 2021 7:49 am
by DaveinOlyWA
DougWantsALeaf wrote:
Mon Mar 22, 2021 11:24 am
I had a 35 mile drive at ~55 mph, and starting with a battery temp of 69F (just finished a l2 charge and car was garaged). Temps were 35F ambient. During the drive battery temps reduced 2F from the hottest sensor. Not amazing cooling, but with a 35F temp differential, there was measursble cooling. This is where the lower energy draw helps a bit in how far you can get reasonably in a day.

Iowa has multiple 200amp DC Chademo chargers available now across the state, so have been trying with the idea of trying a 1000km drive. 3 stops on a 35-40F day to see if I could do 3 back to back stops. The question is what speed to drive to minimize end to end time.

In heat of summer (90F), I doubt I would get even 2 full stops (to 75%) if battery started at 80F. I think in summer, you would need to alternate L2 and DC charging stops.
I think it really depends on how the stops incorporate in your schedule. The obvious thing to do is plug in around 10% and charge to 70%. I did this but didn't charge past 65% and saw rapidgate at 105ishº but it was around 60 KW on what would would have been around 73-74 KW so slower? yes. Rapidgate like 40 kwh? :lol: