eKrom
Posts: 12
Joined: Thu Jul 30, 2020 1:08 pm
Delivery Date: 29 Jul 2020
Leaf Number: 307821
Location: Bay Area, CA
Contact: Website

how to charge to 80% on model SL?

Sat Aug 22, 2020 9:12 am

Hi,

It appears there is no way to limit Gen1 Leaf Model SL (7" infotaiment) to automatically stop charging at 80%?

I have tried to time it with the build-in Charge Timer but the leaf did not stop charging at given time. I suppose it does not as it was not full. So this timer is useless.

A more complicated method would be to have LeafSpy sending alarm when 80% is reached or better yet posting charge state to a MQTT server and have a OpenEVSE charger auto turned off by it.

So why would NIssan not provide this option in SL and have their cars break the battery faster? Or am I missing something?

Thanks,
Michal
'17 Leaf S, 15k, SOH=88% Hx=70%

SageBrush
Posts: 5280
Joined: Sun Mar 06, 2011 2:28 am
Delivery Date: 13 Feb 2017
Location: NM

Re: how to charge to 80% on model SL?

Sat Aug 22, 2020 9:59 am

eKrom wrote:
Sat Aug 22, 2020 9:12 am
Hi,

It appears there is no way to limit Gen1 Leaf Model SL (7" infotaiment) to automatically stop charging at 80%?

I have tried to time it with the build-in Charge Timer but the leaf did not stop charging at given time. I suppose it does not as it was not full. So this timer is useless.
Some model years have an option to charge up to 80%, most do not.
If your car use starts at the same time of day, try setting the 'finish at' timer to about an hour *after* you plan to leave. You will have to tweak this a bit based on your charging rate and battery capacity.
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

alozzy
Posts: 1605
Joined: Fri Jan 20, 2017 4:25 pm
Delivery Date: 18 Jan 2017
Location: Vancouver, BC
Contact: Website

Re: how to charge to 80% on model SL?

Sat Aug 22, 2020 10:05 am

See Dala's "BatterySaver" product offering here:

https://dalasevrepair.fi/#products

Not sure if he would sell you just the modified muxsan canbus device though, as his core business is EV repairs and battery pack upgrades.

Demo here on how it works:

https://youtu.be/yJvrB6aw5Ys
Vancouver, CA owner of a 2013 Ocean Blue SV + QC, purchased 01/2017 in WA
Zencar 12/20/24/30A L1/L2 portable EVSE
1-1/4" Curt #11396 hitch
After market, DIY LED DRLs
LeafSpy Pro + Konnwei KW902 ELM327 BT OBDII dongle
Loving my first BEV :D

lorenfb
Posts: 2467
Joined: Tue Dec 17, 2013 10:53 pm
Delivery Date: 22 Nov 2013
Leaf Number: 416635
Location: SoCal

Re: how to charge to 80% on model SL?

Sat Aug 22, 2020 10:39 am

How difficult is it to mentally calculate the needed capacity (kWh based on present SOC) to achieve 80% SOC, and divide that by your EVSE charge rate
to determine a needed time? It takes me less that three seconds to set my start time to end at 6:00 AM on either of my two Leafs, knowing my L2 charge rate is about 5kW/hr. Even your middle school kid or grand kid would find it an easy effort, if you need help! An error of +/- 5% will be adequate to achieve
the desired result (max SOC ~ 80%).
#1 Leaf SL MY 9/13: 76K miles, 47 Ahrs, 5.0 miles/kWh (average), Hx=70, SOH=73, L2 - 100% > 1000, temp < 95F, (DOD) > 20 Ahrs
#2 Leaf SL MY 12/18: 10.3K miles, SOH 109Ahrs/115Ahrs, 5.2 miles/kWh (average), DOD > 20%, temp < 105F

goldbrick
Posts: 966
Joined: Tue Aug 01, 2017 3:33 pm
Delivery Date: 01 Aug 2017
Leaf Number: 311806
Location: Boulder, CO

Re: how to charge to 80% on model SL?

Sat Aug 22, 2020 11:08 am

eKrom wrote:
Sat Aug 22, 2020 9:12 am
So why would NIssan not provide this option in SL and have their cars break the battery faster?
I don't think Nissan has ever officially answered this but the suspicion is that the EPA reduced or threatened to reduce the Leaf's mileage rating to the mileage expected when it was charged to 80% SOC. After Nissan removed that option the EPA rated the car at 100% SOC.

SageBrush
Posts: 5280
Joined: Sun Mar 06, 2011 2:28 am
Delivery Date: 13 Feb 2017
Location: NM

Re: how to charge to 80% on model SL?

Sat Aug 22, 2020 11:33 am

lorenfb wrote:
Sat Aug 22, 2020 10:39 am
knowing my L2 charge rate is about 5kW/hr.
**cough**
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

SageBrush
Posts: 5280
Joined: Sun Mar 06, 2011 2:28 am
Delivery Date: 13 Feb 2017
Location: NM

Re: how to charge to 80% on model SL?

Sat Aug 22, 2020 11:48 am

By the way, people worried about 100% SoC degrading the battery should realize that the time at 100% SoC is really important. So by all means charge to less than 100% SoC if you are able, but more importantly, minimize the time that the car is sitting at whatever maximum charge you decide on. This is particularly true in the hot summer.

Another advantage of charging in the early morning (say, 4 am to 8 am window) is that ambient temps are lowest for the day.

Our 2013 LEAF charges to 80% in the morning. It is at a SOH of 83% which is far from great, but a lot better than almost all other LEAFs that live in a similar climate to ours in Colorado/New Mexico. I suspect that part of the reason is a diet of charging that avoids high pack temperatures and minimizes time at a high SoC
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

webeleafowners
Posts: 1158
Joined: Mon Oct 05, 2015 5:37 pm
Delivery Date: 06 Oct 2015
Location: Okanagan Valley British Columbia

Re: how to charge to 80% on model SL?

Sat Aug 22, 2020 12:09 pm

The easy but not cheap way would just be to buy a Juicebox EVSE. It has that function. It kinda figures it out based on charge time, calculated remains capacity etc. It takes a few times to get good at it (you have to tell it what your current charge is so a little guessy) but other than having to spend 3 or 5 seconds in the APP every time it’s pretty close. 3 or 5 percent either way. Meh. I used it often on the leaf. Works good.

To be clear. Juicebox pro 40.

And as far as accuracy goes, our model 3 is usually out a couple percent when we try and set it to 80 percent.
2020 Model 3 Tesla. AWD with FSD. Deep metallic blue. Our daily driver.
2016 Nissan Leaf SV 30KWh Culis Red. Sold. Was my daily driver. Loved that car.
EV only Family...well except for the big diesel motorhome. :shock:

lorenfb
Posts: 2467
Joined: Tue Dec 17, 2013 10:53 pm
Delivery Date: 22 Nov 2013
Leaf Number: 416635
Location: SoCal

Re: how to charge to 80% on model SL?

Sat Aug 22, 2020 1:40 pm

SageBrush wrote:
Sat Aug 22, 2020 11:33 am
lorenfb wrote:
Sat Aug 22, 2020 10:39 am
knowing my L2 charge rate is about 5kW/hr.
**cough**
Don't the electric companies have meters installed on dwellings in NM? SCE provided free ZigBee power monitoring devices to its customers,
eliminating the need to actually view the SCE meter.
#1 Leaf SL MY 9/13: 76K miles, 47 Ahrs, 5.0 miles/kWh (average), Hx=70, SOH=73, L2 - 100% > 1000, temp < 95F, (DOD) > 20 Ahrs
#2 Leaf SL MY 12/18: 10.3K miles, SOH 109Ahrs/115Ahrs, 5.2 miles/kWh (average), DOD > 20%, temp < 105F

DougWantsALeaf
Posts: 2097
Joined: Fri May 10, 2013 8:21 pm
Delivery Date: 18 May 2013
Leaf Number: 407811
Location: Chicago North Side

Re: how to charge to 80% on model SL?

Sat Aug 22, 2020 2:01 pm

I used to use the charge timer, but would forget to turn off the timer when traveling around, and them realize too late that my l2 charge didn't happen as it wasn't 2-6am when my timer was set up to go.

My super awesome covid era solution is to plug in the car and set the microwave or Alexa timer to beep when it's time to unplug the car.
2019 S Plus (98.06% SOH) & 2019 SV Plus (94.77% SOH) Both Silver
2013 Leaf SV sold 2019 with 11 bars
100 Mile Club Member (Number 87)
Max Miles on 13 Leaf: 120 miles
Max Miles on 19 SV+: 242 Highway miles @ 4.5 miles/kWh

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