ByeFO
Gold Member
Posts: 65
Joined: Sat Mar 04, 2017 8:38 am
Delivery Date: 13 Jun 2017
Leaf Number: 407834
Location: Philadelphia area

How important is charging only to 80%?

Sun Jun 25, 2017 3:08 pm

Is there a problem if I need to charge the Leaf to 100% for the one day a week I have an after-work errand to run?

I usually charge it to 80% most work days. I get the Leaf "low battery warning" just a few miles from home, so no big deal. I prob couldn't add the after-work errand on 80% charge day, though.

Thanks!
2013 (4/2013) Pearl White SV LED/QC package
6/13/17: 22,852mi; AHr= 54.13; SOH= 82%
6/19/18: 39,934mi; AHr= 51.60; SOH= 69.5%

alozzy
Posts: 1072
Joined: Fri Jan 20, 2017 4:25 pm
Delivery Date: 18 Jan 2017
Location: Vancouver, BC
Contact: Website

Re: How important is charging only to 80%?

Sun Jun 25, 2017 3:22 pm

No problem at all, in fact just the opposite - doing a full charge periodically is good for the pack. Just don't leave the car at 100% SOC for more than an hour or two and try to avoid charging when it's hot out
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

Dooglas
Posts: 210
Joined: Thu Apr 03, 2014 10:08 pm
Delivery Date: 04 Jan 2017
Leaf Number: 314779
Location: Oregon City, OR

Re: How important is charging only to 80%?

Sun Jun 25, 2017 3:23 pm

The same people who advise you to not charge above 80% also warn you to not discharge below 20%. Sounds like you are going to break one "rule" or the other. My advice is to use your car in whatever way meets your needs.
2013 Leaf SV - lease ended, 2016 Leaf S30

hackdroot
Posts: 85
Joined: Sat Apr 15, 2017 12:54 pm
Delivery Date: 15 Apr 2017
Location: East Bay Area, CA

Re: How important is charging only to 80%?

Sun Jun 25, 2017 4:25 pm

I charge my leaf to 100% 4-5 days a week. It finishes charging about 30 minutes before I leave in the morning. I bought the car as a commuter and use it as such.
2013 Leaf SL (12/2013) + Premium package 31,000 miles - 58.8AHr - 89%SOH

ByeFO
Gold Member
Posts: 65
Joined: Sat Mar 04, 2017 8:38 am
Delivery Date: 13 Jun 2017
Leaf Number: 407834
Location: Philadelphia area

Re: How important is charging only to 80%?

Sun Jun 25, 2017 5:21 pm

Thanks!
2013 (4/2013) Pearl White SV LED/QC package
6/13/17: 22,852mi; AHr= 54.13; SOH= 82%
6/19/18: 39,934mi; AHr= 51.60; SOH= 69.5%

GerryAZ
Gold Member
Posts: 1776
Joined: Mon Nov 22, 2010 6:47 pm
Delivery Date: 12 Jun 2011
Location: Phoenix, AZ

Re: How important is charging only to 80%?

Sun Jun 25, 2017 6:26 pm

I have always charged to 100% (both 2011 and 2015). I also typically discharge to LBW or VLBW and battery deterioration on both vehicles was and is commensurate with others in Phoenix who tried to "baby" their batteries so I recommend that you charge it and drive it as you need. If you can avoid charging when the battery is hot and minimize the time that it sits at 100%, those are probably good ideas. Unfortunately, I would never be able to charge in the summer if I worried too much about charging when at 8 temperature bars or higher. I just started a QC at 9 bars and expect it to be 10 or 11 bars when finished.
Gerry
Silver LEAF 2011 SL rear ended (totaled) by in-attentive driver 1/4/2015 at 50,422 miles
Silver LEAF 2015 SL purchased 2/7/2015

Jedlacks
Posts: 167
Joined: Sun Dec 14, 2014 12:10 pm
Delivery Date: 10 Mar 2018
Leaf Number: 303628
Location: Kennesaw, GA

Re: How important is charging only to 80%?

Sun Jun 25, 2017 6:42 pm

hackdroot wrote:I charge my leaf to 100% 4-5 days a week. It finishes charging about 30 minutes before I leave in the morning. I bought the car as a commuter and use it as such.


+1

That is exactly what I do.
2018 SV
Deep Blue Pearl

LeftieBiker
Posts: 9217
Joined: Wed May 22, 2013 3:17 am
Delivery Date: 31 May 2013
Location: Upstate New York, US

Re: How important is charging only to 80%?

Sun Jun 25, 2017 9:24 pm

Dooglas wrote:The same people who advise you to not charge above 80% also warn you to not discharge below 20%. Sounds like you are going to break one "rule" or the other. My advice is to use your car in whatever way meets your needs.


Who exactly advises people "to not charge above 80%"?
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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EVDRIVER
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Re: How important is charging only to 80%?

Sun Jun 25, 2017 9:45 pm

Dooglas wrote:The same people who advise you to not charge above 80% also warn you to not discharge below 20%. Sounds like you are going to break one "rule" or the other. My advice is to use your car in whatever way meets your needs.


Those are apples and oranges comparisons that leave out the relevant details.

cwerdna
Posts: 8086
Joined: Fri Jun 03, 2011 4:31 pm
Delivery Date: 28 Jul 2013
Location: SF Bay Area, CA

Re: How important is charging only to 80%?

Sun Jun 25, 2017 11:39 pm

LeftieBiker wrote: Who exactly advises people "to not charge above 80%"?

The '13 Leaf manual (last US model year to have a setting to charge to 80%) does.

OP can download a copy from https://owners.nissanusa.com/nowners/na ... nualsGuide and search for 80%. It's all over the place, besides referring to 80% mode as long life mode and "improves battery longevity".

Some bits from page EV-24
To maximize vehicle range, NISSAN recommends
using the default setting, long distance
mode (100% charge). To maximize the battery’s
useful life, use the following driving and charging
habits where possible:
...
Avoid sustained high battery state of charge
(caused, for example, by frequently charging to
100% state of charge and/or leaving the battery
above 80% state of charge for long periods of
time).
• Allow the battery charge to be below at least
80% before charging

Unfortunately, Nissan has never publicly provided us with any battery degradation info for 80% vs. 100% or any other % SoC vs. temp and/or temp. Nor have they said how much better it is (if any) to only charge to 80% or if it's bad to run below 20% or whatever %.

The only warnings I quickly found about low SoC are along these lines:
To prevent damage to the Li-ion battery:
...
Do not leave your vehicle for over 14
days where the Li-ion battery available
charge gauge reaches a zero or near
zero (state of charge).

Avoid leaving your vehicle for over 14 days
where the Li-ion battery available charge gauge
reaches a zero or near zero (state of charge).

'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.

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