DiamondDan73
Posts: 64
Joined: Tue Jul 28, 2015 9:35 pm
Delivery Date: 15 Sep 2015
Location: Southern California

Is there a definitive answer on charging to 80% or 100%?

Fri Apr 22, 2016 3:22 pm

I just had my traction battery replaced and I am picking it up today. I have a 2012 so I have the option to limit my charge to 80% or go for the full 100%.

Is it better to go to 80% vs 100%?

Is it worse to go below 20% or is there a certain percentage that you do not want to go below?

Is it worse to go below 20% or charge above 80%?

Thank you for any input.
2012 Cayenne Red SL
Purchased 9/1/15 38,950 miles 9 bars AHr 42.94
09/2/15 P3227 update 9 bars AHr 50.80
02/20/16 47,973 miles 8 bars AHr 43.30
New Battery 04/22/16 50,025 miles 12 bars AHr 63.80

LeftieBiker
Posts: 9361
Joined: Wed May 22, 2013 3:17 am
Delivery Date: 31 May 2013
Location: Upstate New York, US

Re: Is there a definitive answer on charging to 80% or 100%?

Fri Apr 22, 2016 3:29 pm

The evidence for 80% isn't hard, but it is likely best, based on what we know of lithium cells, to usually charge to 80% and charge occasionally to 100% to equalize the pack, preferably right before using the car. Going below 20% isn't terrible, but leaving the state of charge below 25% isn't a good idea.
Scarlet Ember 2018 Leaf SL W/ Pro Pilot
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PLEASE don't PM me with Leaf questions. Just post in the topic that seems most appropriate.

DiamondDan73
Posts: 64
Joined: Tue Jul 28, 2015 9:35 pm
Delivery Date: 15 Sep 2015
Location: Southern California

Re: Is there a definitive answer on charging to 80% or 100%?

Fri Apr 22, 2016 4:29 pm

Thank you
2012 Cayenne Red SL
Purchased 9/1/15 38,950 miles 9 bars AHr 42.94
09/2/15 P3227 update 9 bars AHr 50.80
02/20/16 47,973 miles 8 bars AHr 43.30
New Battery 04/22/16 50,025 miles 12 bars AHr 63.80

speedski97
Posts: 135
Joined: Fri Oct 03, 2014 8:44 pm
Delivery Date: 12 Dec 2013
Location: Whittier Ca

Re: Is there a definitive answer on charging to 80% or 100%?

Fri Apr 22, 2016 8:07 pm

Good job on the new battery. It is like getting a new car. enjoy.

dhanson865
Moderator
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Leaf Number: 16156
Location: Tennessee

Re: Is there a definitive answer on charging to 80% or 100%?

Fri Apr 22, 2016 9:06 pm

DiamondDan73 wrote:I just had my traction battery replaced and I am picking it up today. I have a 2012 so I have the option to limit my charge to 80% or go for the full 100%.

Is it better to go to 80% vs 100%?

Is it worse to go below 20% or is there a certain percentage that you do not want to go below?

Is it worse to go below 20% or charge above 80%?

Thank you for any input.


In SoCal with a car that went through one battery already...

If you see similar to worse heat in the next few years anything over 40% SOC will be degradation, The higher the SOC the higher the degradation but heat is more important than the SOC in normal usage patterns (ie don't leave it charged to full any longer than you absolutely have to in minutes or hours).

My rule of thumb for bottom end is to avoid going below VLBW on a daily basis but I have no objection to going below VLBW once a week if I accidentally get there. When I do I try to charge it back to 1 mile above LBW per leafspy and then stop the charge to let it charge again later on the normal schedule if it is warm (trying to charge at the end of morning when it's cooler and the car won't stay charged long before I leave for the day).

But if any or all of that seems too much trouble just charge it and go. You'll still see heat degradation no matter how you baby it.
Blue 2012 Leaf 195/65/15 tires, 15" Rims
Silver 2012 Leaf 16" stock wheels
wiki/index.php?title=Real_World_Battery_Capacity_Loss
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Templetong
Posts: 6
Joined: Fri Dec 04, 2015 5:04 pm
Delivery Date: 30 Nov 2015
Leaf Number: 312067

Re: Is there a definitive answer on charging to 80% or 100%?

Sun May 01, 2016 6:13 pm

Is the 80% option only available on older models? I don't see the option on a 2015...

cwerdna
Posts: 8198
Joined: Fri Jun 03, 2011 4:31 pm
Delivery Date: 28 Jul 2013
Location: SF Bay Area, CA

Re: Is there a definitive answer on charging to 80% or 100%?

Sun May 01, 2016 6:38 pm

Templetong wrote:Is the 80% option only available on older models? I don't see the option on a 2015...

It was removed on 2014+ Leafs for the US market: http://insideevs.com/2014-nissan-leaf-m ... -84-miles/.

'13 Leaf SV w/premium package (owned)
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'06 Prius

Please don't PM me with Leaf questions. Just post in the topic that seems most appropriate.

LeftieBiker
Posts: 9361
Joined: Wed May 22, 2013 3:17 am
Delivery Date: 31 May 2013
Location: Upstate New York, US

Re: Is there a definitive answer on charging to 80% or 100%?

Sun May 01, 2016 9:55 pm

The 2011 & 2012 Leafs have to option to charge to 80% using the charge timer. Overriding the timer for any reason results in a 100% charge if left unattended. The 2013 Leaf - and that year only - also has a setting in the car's menu to limit all charging to 80%. That means you can plug it in anytime, and if you have the timer Off or set to always be active, it will only charge to 80% (or 79% in my quirky Leaf's case). You can also set the car's limit to 100%, the timer's limit to 80%, and it will then charge to 80% normally, or to 100% if the timer is overridden. A very handy feature, but one that resulted in a lower average EPA estimated range for the 2013 Leafs, so it was dropped after one year.

(Edited to correct a mistake.)
Last edited by LeftieBiker on Mon May 02, 2016 12:52 pm, edited 1 time in total.
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.

cwerdna
Posts: 8198
Joined: Fri Jun 03, 2011 4:31 pm
Delivery Date: 28 Jul 2013
Location: SF Bay Area, CA

Re: Is there a definitive answer on charging to 80% or 100%?

Mon May 02, 2016 1:07 am

LeftieBiker wrote:The 2011 & 2012 Leafs have to option to charge to 80% using the charge timer. Overriding the timer for any reason results in a 100% charge if left unattended. The 2013 Leaf - and that year only - also has a setting in the car's menu to limit all charging to 80% unless the Timer Override button is pressed. That means you can plug it in anytime, and if you have the timer Off or set to always be active, it will only charge to 80% (or 79% in my quirky Leaf's case). A very handy feature, but one that resulted in a lower average EPA estimated range for the 2013 Leafs, so it was dropped after one year.

Everything else you wrote is right but I'm not sure the bolded part is correct.

IIRC, if you have no timers enabled and you turn on the long life mode 80% setting, even if you press the timer override button ("immediate charge" button in Nissan parlance), it will not charge to over 80%. There's even some verbiage on page CH-38 of the '13 manual about that.

However, if you have enabled for 80% AND the separate (non-timer related) long-life mode 80% setting is off, I know that if you send a start charge command via Carwings/Nissan Connect, it will go to 100% (I do this frequently). I'm reasonably sure pressing timer override aka immediate charge will do the same thing, as well.

'13 Leaf SV w/premium package (owned)
'13 Leaf SV w/QC + LED & premium packages (lease over, car returned)
'06 Prius

Please don't PM me with Leaf questions. Just post in the topic that seems most appropriate.

LeftieBiker
Posts: 9361
Joined: Wed May 22, 2013 3:17 am
Delivery Date: 31 May 2013
Location: Upstate New York, US

Re: Is there a definitive answer on charging to 80% or 100%?

Mon May 02, 2016 2:33 am

You may well be right about that. I never set mine to 80%, and hadn't thought about that. If someone can confirm this I'll edit the post.
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.

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