achewt
Posts: 62
Joined: Mon Mar 31, 2014 11:45 am
Delivery Date: 09 May 2014
Location: Nelson, BC

Ability to stop charging on 2014 to avoid 100%

Thu Jun 12, 2014 11:43 am

Nissan, I understand the apparent reason that you removed the ability to have the 2014 model car stop charging at 80% (to avoid the way EPA tested range on the earlier model[s]); however, I REALLY NEED THIS FEATURE!

Scenario: I drive to a mountain town a few times per week and have to charge my car in order to complete the return trip. However, I only need 60%-80% of my battery available when I leave. Unfortunately on the 2014, there is no way to have my car stop charging at a certain %. I either have to fiddle with the car charge timer each time and try to anticipate how long it will take to reach a certain %, or I start doing whatever I need to do and send a command to my car to charge via the smart phone app when I think I am 1 - 1.5 hours from being done my activity. This is incredibly cumbersome. I don't want to charge to 100% (or even 85%), because the hill back down to the valley is almost 600m (2000ft) and is only 9km long (average grade of 7%). I need the "head-room" in my battery to be able to use regeneration to slow me down - ideally at 30kW (which only seems possible under about 85%); otherwise I have to use the mechanical brakes on this long hill. I can't be the only person stuck with this scenario.

My suggestions:
1) Reimplement whatever software used on the 2013 or earlier model that allows the driver to select the maximum % that they want the car to be charged to
2) Change the smart phone app such that you can STOP charging remotely, as well as start it

Thank you for your consideration.
Ocean Blue 2014 SL, 133,000km as of mid-Oct 2017, back up to 85% (from low of 83%!) SOH
1 bar lost Aug 31/17 @ 54.5Ahr 83%SOH 79.72%Hx 127,413km
Commuting 142km round-trip; level 2 at home, level 1 at work
http://kootenayEVfamily.ca

Metalman
Posts: 92
Joined: Wed Feb 15, 2012 8:49 pm
Delivery Date: 15 Feb 2012
Location: Sunbury PA

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

Sun Jun 29, 2014 7:53 pm

I agree, I have a similar situation on a smaller scale. If I could go to 90% I could be close to 100% by the time I'm off my hill. I would suggest they have it selectable in increments of 5 starting at say 60%. If they are not suggesting that you charge to other than 100% it shouldn't concern the EPA.

johnrhansen
Posts: 1100
Joined: Mon Aug 12, 2013 7:23 pm
Delivery Date: 15 Jun 2013
Leaf Number: 409445
Location: Seattle, WA

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

Sun Jun 29, 2014 8:56 pm

All they need to do is make the 80 percent charge feature an option you can choose when you buy the car, or an optional update you can pay the dealer to install if you already own the car. I'm sure this feature can be added with a simple software update if Nissan chooses to make it available.
2013 S model with quick charge package.
AV 30 amp level 2 EVSE, Bosch PowerMax 30 Amp EVSE, EVSE upgraded EVSE.

Zurc
Posts: 38
Joined: Wed Jul 16, 2014 6:34 pm
Delivery Date: 16 Jul 2014
Leaf Number: 336692
Location: KItchener, Ontario.

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

Fri Aug 01, 2014 8:33 pm

One thing you can do is monitor the charge via app or whatever and when it gets to the desired value, just pull the plug.

Zurc.
2014 Red Leaf
2007 White Land Rover LR3
2000 Blue Excursion w/7.3L diesel.

Stoaty
Gold Member
Posts: 4460
Joined: Fri Jun 18, 2010 9:50 pm
Delivery Date: 12 Jun 2011
Leaf Number: 3871
Location: West Los Angeles

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

Fri Aug 01, 2014 9:57 pm

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.
2011 Leaf with 62,000 miles given to Nephew
2013 Tesla Model S85 with 251 miles rated range at full charge
Leaf Spy Manual
Battery Aging Model Spreadsheet

a2t
Posts: 7
Joined: Tue Sep 23, 2014 2:23 pm
Delivery Date: 23 Sep 2014

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

Mon Oct 06, 2014 3:08 pm

whats wrong with charging to 100%? I just got my 2015 leaf and plug it in frequenty cuz I never know how far im going next. is it bad to always top it off to 100 ?

donald
Posts: 917
Joined: Mon Jul 29, 2013 12:45 pm
Delivery Date: 29 Jul 2013

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

Mon Oct 06, 2014 3:29 pm

a2t wrote:whats wrong with charging to 100%? I just got my 2015 leaf and plug it in frequenty cuz I never know how far im going next. is it bad to always top it off to 100 ?
You don't appear to have read the OP.

Try again, and this time read to the end of the 2nd paragraph before giving up reading what someone else has written.

johnrhansen
Posts: 1100
Joined: Mon Aug 12, 2013 7:23 pm
Delivery Date: 15 Jun 2013
Leaf Number: 409445
Location: Seattle, WA

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

Mon Oct 06, 2014 7:07 pm

I noticed how the charging current tapers off as the battery fills. I wonder if that characteristic could be used to shut off the EVSE when the current starts to taper over a long period, say 5 minutes.
2013 S model with quick charge package.
AV 30 amp level 2 EVSE, Bosch PowerMax 30 Amp EVSE, EVSE upgraded EVSE.

User avatar
Randy
Moderator
Posts: 2064
Joined: Thu Apr 22, 2010 12:29 pm
Delivery Date: 04 Jan 2011
Leaf Number: 0191
Location: San Diego, CA

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

Mon Oct 06, 2014 7:43 pm

It's not a perfect world, but why not use the end of charge time setting on the timer, and rig it by telling the system you're going to leave later than you actually are...

Example, set the timer end of charge to 10am, and plan on leaving at 9am or so...

achewt
Posts: 62
Joined: Mon Mar 31, 2014 11:45 am
Delivery Date: 09 May 2014
Location: Nelson, BC

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

Mon Oct 06, 2014 8:51 pm

Randy wrote:It's not a perfect world, but why not use the end of charge time setting on the timer, and rig it by telling the system you're going to leave later than you actually are...

Example, set the timer end of charge to 10am, and plan on leaving at 9am or so...


Well I'm embarrassed to write that I thought that using the End Timer by itself was only an option on 2013 or older Leafs. I hadn't read the user manual, and when I set the Timer via the Nav system initially, it had a Start Time and an End Time. Imagine my surprise when I just went out to my car to find a line in the manual that noted that if only and End Timer was set, the car would automatically figure out when to start charging! However, it says nothing in the manual on how to accomplish this - a few seconds of fiddling around and I figured it out though, just push the 'Clear' button and it replaces whatever Start Time was set with a bunch of wild card characters (*).

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.
Ocean Blue 2014 SL, 133,000km as of mid-Oct 2017, back up to 85% (from low of 83%!) SOH
1 bar lost Aug 31/17 @ 54.5Ahr 83%SOH 79.72%Hx 127,413km
Commuting 142km round-trip; level 2 at home, level 1 at work
http://kootenayEVfamily.ca

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