nrvous
Posts: 22
Joined: Sat Sep 08, 2018 3:12 pm
Delivery Date: 08 Sep 2018

Re: 2018 Leaf: How to Charge to 80% Only?

Wed Nov 07, 2018 7:46 pm

jjeff wrote:
GlennD wrote:
nrvous wrote:Similar to some of the posts in this thread, I also have a JuiceBox Pro 40 and it works great for charging to a specific percentage like 80%. I enter in the amount of charge left on the car when I plug in and can set the iphone app to charge to whatever percentage I set it to. I have a Leaf S but the Juicebox gives me some remote charging functionality of the SV/SL.


A JuiceBox is great for the Smartphone generation. The only way to set its parameters is by the app. Personally I am happy to walk up to my EVSE.

+1
Unless it's changed, the only way to adjust the amperage is with the app, no WiFi, no ability to adjust output amperage!
No thanks, I'm happy to use my older JuiceBox where I have a little RF remote :lol:


Agreed, there is a little more setup (or capability depending on how you look at it) with a JuiceBox Pro 40 than a dumb EVSE. Just to clarify, it can be configured via the phone app or web dashboard.

It's important to note that the Juicebox can still be used as a dumb EVSE even if wifi or internet is not available. Why you'd want to do that I have no idea but the smart features won't disable the EVSE by any stretch if you can't connect to it for some reason.

For example, my Juicebox Pro 40 is on a 50a circuit and is set to 32a. I can still use it to charge both my cars (Leaf @ 27a and Volt @ 16a) no problem even if I didn't connect it to my phone or my network. So for me, I really don't have a need to play with the output amperage once it's set.

Again, it's all about personal preference and your needs. For me I could never go back to a dumb EVSE after having all the convenient features of the JuiceBox Pro 40.

LeftieBiker
Posts: 9575
Joined: Wed May 22, 2013 3:17 am
Delivery Date: 31 May 2013
Location: Upstate New York, US

Re: 2018 Leaf: How to Charge to 80% Only?

Wed Nov 07, 2018 10:27 pm

It occurs to me that with my newly installed Nissan EVSE in my garage, I can use that app-controlled, J-1772 plug-connected switch that we all dismissed last year because it wasn't weatherproof. Now, does anyone remember the make and model of that unit?

EDIT: it was here, in this very topic, but they seem to have dropped it. Figures! I'll look for one elsewhere...

https://emotorwerks.com/products/charging-stations/juiceplug?atid=18
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.

alozzy
Posts: 1162
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Re: 2018 Leaf: How to Charge to 80% Only?

Wed Nov 07, 2018 10:46 pm

I find it odd that no L2 EVSE manufacturers have taken advantage of the tapering off of charge current above 80% SOC as a trigger for ending charging before 100%

While using that wouldn't guarantee precisely 80% SOC, it would be close enough.

Here's an L2 charging curve analysis that proves my point:

https://www.johnsavesenergy.com/nissan- ... 12-vs-2013

Image

So, as an example, the EVSE could monitor the charging rate and, if it drops below 1 kW, then stop the charging cycle.

Would seem like a simple way to approximate 80% charging.
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

LeftieBiker
Posts: 9575
Joined: Wed May 22, 2013 3:17 am
Delivery Date: 31 May 2013
Location: Upstate New York, US

Re: 2018 Leaf: How to Charge to 80% Only?

Wed Nov 07, 2018 11:01 pm

Or at least 85-90%, yes.
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.

DaveinOlyWA
Posts: 13267
Joined: Sat Apr 24, 2010 7:43 pm
Delivery Date: 16 Feb 2018
Leaf Number: 314199
Location: Olympia, WA
Contact: Website

Re: 2018 Leaf: How to Charge to 80% Only?

Thu Nov 08, 2018 7:38 am

LeftieBiker wrote:Or at least 85-90%, yes.


+1. I will admit to not knowing when my previous LEAFs tapered but on my 2018, it tapers well into the 90's. I think its too high for general purposes unless you are needing that much range.
2011 SL; 44,598 miles. 2013 S; 44,840 miles.2016 S30 deceased. 29,413 miles. 2018 S40; 11,987 miles, 485 GIDs, 37.6 kwh 110.89 Ahr , SOH 96.00, Hx 115.22
My Blog; http://daveinolywa.blogspot.com" onclick="window.open(this.href);return false;

hyperionmark
Posts: 201
Joined: Tue Jan 31, 2017 11:46 am
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Location: Nebraska

Re: 2018 Leaf: How to Charge to 80% Only?

Thu Nov 08, 2018 7:40 am

That's a great point! Would love this feature!

hyperionmark
Posts: 201
Joined: Tue Jan 31, 2017 11:46 am
Delivery Date: 31 Jan 2017
Location: Nebraska

Re: 2018 Leaf: How to Charge to 80% Only?

Thu Nov 08, 2018 7:49 am

BTW, I just passed this feature request on to the ChargePoint contact over at PriusChat. Not sure if we have a similar contact on this forum, but the more voices saying we need this feature the faster it could get implemented.

hyperionmark
Posts: 201
Joined: Tue Jan 31, 2017 11:46 am
Delivery Date: 31 Jan 2017
Location: Nebraska

Re: 2018 Leaf: How to Charge to 80% Only?

Thu Nov 08, 2018 7:56 am

Last post, sorry for the spam...
Just checked on my ChargePoint app. Best I can tell is that it starts tapering me around 93-94% on my 2nd Gen Leaf. Like you said, not necessarily always super functional, but at least it would prevent it from going to 100% when you forget you are plugged in.

alozzy
Posts: 1162
Joined: Fri Jan 20, 2017 4:25 pm
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Contact: Website

Re: 2018 Leaf: How to Charge to 80% Only?

Thu Nov 08, 2018 11:13 am

I suspect 80% isn't a magical SOC and that low 90% ish SOC charging would still be much better than regularly charging to 100%. If the EVSE manufacturer allowed the user to set the cutoff kW rate, then it would be fairly easy to tweak things to work best for a particular LEAF as there's likely quite a bit of variability.
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

DaveinOlyWA
Posts: 13267
Joined: Sat Apr 24, 2010 7:43 pm
Delivery Date: 16 Feb 2018
Leaf Number: 314199
Location: Olympia, WA
Contact: Website

Re: 2018 Leaf: How to Charge to 80% Only?

Thu Nov 08, 2018 11:34 am

alozzy wrote:I suspect 80% isn't a magical SOC and that low 90% ish SOC charging would still be much better than regularly charging to 100%. If the EVSE manufacturer allowed the user to set the cutoff kW rate, then it would be fairly easy to tweak things to work best for a particular LEAF as there's likely quite a bit of variability.


Agreed. It is well established that 90% is better than 100%, 70% better than 80%. Although not practical for such a short range car, its believed that a 20% DOD from 40% to 60% will more than double the life of the pack.
2011 SL; 44,598 miles. 2013 S; 44,840 miles.2016 S30 deceased. 29,413 miles. 2018 S40; 11,987 miles, 485 GIDs, 37.6 kwh 110.89 Ahr , SOH 96.00, Hx 115.22
My Blog; http://daveinolywa.blogspot.com" onclick="window.open(this.href);return false;

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