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dgpcolorado
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Re: Ability to stop charging on 2014 to avoid 100%

Mon Oct 06, 2014 9:17 pm

achewt wrote:...So, for my regular morning commute, I will 'trick' the system by setting the charge timer for 0:40 after I actually plan to leave - my home EVSE allows my car to charge at ~30%/hr, so I should be right around 80% most mornings when I leave.

Still won't solve my initial situation where I go to the mountain town in the afternoon and have varied departure times that I don't know in advance... but less math involved now if I do try to guess. That's something anyways.
The end-timer overestimates how long it takes to charge the car (on most LEAFs reported here) so setting it for 40 minutes after you plan to leave may not be enough. And the charge rate tapers as it nears "100%". You will likely have to experiment with the times you choose and bear in mind that it will vary somewhat even when you do settle on a time. Also, if you ever use preheating my experience is that end-time-only charging tends to finish even earlier than usual.

As always, YMMV.
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johnrhansen
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Re: Ability to stop charging on 2014 to avoid 100%

Tue Oct 07, 2014 3:30 am

About 90 minutes later than your departure time ought to do it.
2013 S model with quick charge package.
AV 30 amp level 2 EVSE, Bosch PowerMax 30 Amp EVSE, EVSE upgraded EVSE.

Levenkay
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Leaf Number: 19196
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Re: Ability to stop charging on 2014 to avoid 100%

Tue Oct 07, 2014 9:58 am

This maybe isn't entirely on-topic, but I've found, as I deepen the rut between my off-duty storage location and my cubicle, that the energy required for the daily commute is reasonably consistent, at least under the same weather conditions. I've set a start time in addition to the end time, and by fiddling with the small charging window, I can keep the car above about four bars (which I judge to be enough to cover an unscheduled errand or two). If that reserve wanders too far from the target, I adjust the start time by a ten-minute click or two in the appropriate direction.

achewt
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Location: Nelson, BC

Re: Ability to stop charging on 2014 to avoid 100%

Tue Oct 07, 2014 10:22 am

Well I set the "End Time" only last night and as others noted in the thread, I didn't get what I expected, I've had better luck guessing at the charging start time. I think that this only further proves my point. It is ridiculous to have to play a guessing game in order to regain functionality that was included in the first model of the Leaf.

Nissan: please consider implementing one of the solutions I suggested in my original post.

Bonus points for implementing an option where you input the Start Time and the desired % at which you wish charging to end (in this fashion my car would start charging at 3am, long after I've finished driving, and will stop at 70 or 90% or whatever % I set by the time I want to drive the car at 5:50am - 6:20am. [This assumes of course that I've left adequate time between the Start time and % I desire to be charged.]).
Ocean Blue 2014 SL, 108,000km as of mid-Feb 2017, back up to 95% (from low of 86%!) SOH
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Nubo
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Re: Ability to stop charging on 2014 to avoid 100%

Tue Oct 07, 2014 10:42 am

Considering the problems Nissan had with the 1st-gen battery, my reckoning is that charging to 100% isn't all that big of an effect on battery longevity. I don't think they would have removed the 80% feature if it had made a significant difference in battery life. They took too much heat [heh] over battery degradation to throw away a feature if it were truly helpful.

Remember, 100% isn't really "100%" of battery capacity, it's 100% of "allowable capacity".

Probably a larger factor is how long the car sits at full charge. And that is still in the owner's control.

It does suck for people who would like to start a long downhill drive with full regen available. I don't see why they don't provide a fully-selectable charge level as Tesla does. EPA doesn't impose a penalty on Tesla for this. They did for Nissan because Nissan claimed the 80% mode was necessary for the car's health. If they would implement it as a convenience instead I think that would solve the problem. It's just software. Unfortunately Nissan rarely seems to be able to summon either the will or the competence (not sure which) to do a decent job with software. It's a rather glaring problem when you're trying to market yourself as the "innovative" car company. By the time Nissan agonizes, bites their nails, engages their Elbonian programmer corps, releases an update and has people take the time necessary to schedule and implement an update at the stealerships, Tesla will have issued a dozen software updates over the air for customers to receive fixes and improvements effortlessly.

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bbrowncods
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Re: Ability to stop charging on 2014 to avoid 100%

Tue Oct 07, 2014 11:52 am

I use Start Time and End time to get to 80%. I use L2 charging and get roughly 1% charge every 2 minutes.
So, if I want to go from 40% to 80% that is an increase of 40 and I set the timer for 80 minutes. My TOU rates end at 5AM so I start the timer at 3:40AM and end at 5AM. I will usually round up to, in this case, 90 minutes just to make the math quick.
2014 Cayenne Red Leaf SL purchased 6/9/2014 (dealer received it on 6/7/2014), manufacture date 4/2014.
7/4/14 -629 miles, Temp 83, SOC 97.5, 59.81 Ahr, SOH 91%, Hx 91.44, 20.2 Kwh, Avg 4.127, High 4.136, Low 4.122, GIDS 267/92.5%.

achewt
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Re: Ability to stop charging on 2014 to avoid 100%

Tue Oct 07, 2014 1:41 pm

Nubo wrote:... By the time Nissan agonizes, bites their nails, engages their Elbonian programmer corps, releases an update and has people take the time necessary to schedule and implement an update at the stealerships, Tesla will have issued a dozen software updates over the air for customers to receive fixes and improvements effortlessly.


I remember that Dilbert comic, always hilarious! Thanks for your thoughts.
Ocean Blue 2014 SL, 108,000km as of mid-Feb 2017, back up to 95% (from low of 86%!) SOH
Commuting 142km round-trip; level 2 at home, level 1 at work
http://kootenayEVfamily.ca

mtntop
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Leaf Number: 304491

Re: Ability to stop charging on 2014 to avoid 100%

Wed Jan 14, 2015 7:50 pm

It would certainly be helpful if Nissan re-instituted the 80% charging limit choice. I just purchased a 2015 Leaf. My wife and I are retired and drive different distances every day. I have to reset the timer parameters every night to get close to 80%. I use level one, which adds about 6.5% every hour. Not hard to do the math and set the timer, but an automatic 80% button would make life easier and getting to the house from the car quicker.

LeftieBiker
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Re: Ability to stop charging on 2014 to avoid 100%

Wed Jan 14, 2015 9:27 pm

I don't think they would have removed the 80% feature if it had made a significant difference in battery life.


Heh. They had no way of knowing whether it helped or not - it was only there for a single model year. I'm glad it's there, even if mine insists on charging to 79%, instead.
2013 "Brilliant Silver" SV with Premium Package and no QC, and 2009 Vectrix VX-1 with 18 Leaf cells.

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tkdbrusco
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Re: Ability to stop charging on 2014 to avoid 100%

Wed Jan 14, 2015 10:00 pm

Stoaty wrote:I use this simple rule of thumb:

Every 10 minutes of L2 charging (3.3 kw charging, if 6.0 kw charging need to make an adjustment) adds 3% Gids. Example:

Your Leaf has 30% Gids (from Leaf Spy, in my signature or LeafDD) and you want to charge to 70% Gids - charge for 130 minutes. Pretty accurate, but not as convenient as having 80% charge.


Problem is that the charge rate varying with temperature. I get anywhere from 33-40% of a charge on L2 in an hour depending on battery temp.
2015 Leaf S w/QC Package. San Jose, CA
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