sandeen
Posts: 120
Joined: Fri May 12, 2017 1:45 pm
Leaf Number: 026685
Location: Minnesota

Re: Dramatic Ahr rise after quick charge?

Fri Aug 25, 2017 9:29 am

Yes, it lived in TX until Feb 2016, when it moved to MN with 9 bars. I understand that it degraded faster in TX than it has/will in MN. Nonetheless, my Ahr trend looked promising until the recent quick charges. It dropped from 50.9Ahr to 43.7Ahr in a bit over 1 year in MN with primarily L1/L2 charges.

There is another poster here who is below 40 Ah who has not lost that last bar.

Yeah, I wonder how many other cars are out there with very low Ahr that still have 9 bars. it'd be an interesting datapoint but there aren't a lot of reports like that. I suppose people are more likely to report when they did lose the bar, not when they didn't.

Anyway, I'm now on day 5 of the sustained Ahr bump and still increasing, contrary to the anecdotes about temporary 24hr blips. I'll just shut up for a while until I get a better idea where it's going to go from here. I'll follow up in a week or so, just in case anyone is interested in the data.
Image
Que será, será ;)
Thanks again,
-Eric
Last edited by sandeen on Fri Aug 25, 2017 12:47 pm, edited 1 time in total.
2012 SL from TX, (mfg 8/12), used, dropped to 8 bars at 43.50 Ahr, 40,601 miles. my daily stats =/= my collected data on 4-bar losers

Durandal
Posts: 315
Joined: Wed Sep 21, 2016 8:55 am
Delivery Date: 22 Sep 2016
Leaf Number: 025018
Location: Central Arkansas

Re: Dramatic Ahr rise after quick charge?

Fri Aug 25, 2017 12:44 pm

I've been pushing my Leaf harder than usual lately, and I've noticed a .2Ah increase in capacity as well, but I don't have any QCs in my area to try to push things that way... Please post new data a week from now when you have it.
Pulled the trigger on going EV on 10/2016 with a 2012 Leaf, and a Tesla Model 3 reservation expected to receive in June 2018.

sandeen
Posts: 120
Joined: Fri May 12, 2017 1:45 pm
Leaf Number: 026685
Location: Minnesota

Re: Dramatic Ahr rise after quick charge?

Fri Aug 25, 2017 1:08 pm

Unrelated to my own car, here are some posts (translated from German) showing steady and sustained increase in the LeafSpy Ahr readings - gaining nearly 6 Ahr in the stats - with multiple, frequent quickcharges:

Oct 2013; 7 QCs, 94 L1/L2s:
Image
Jan 2014; 43 QCs, 224 L1/L2s:
Image

That was during a German winter. Obviously on a much fresher battery, not sure which model year.
2012 SL from TX, (mfg 8/12), used, dropped to 8 bars at 43.50 Ahr, 40,601 miles. my daily stats =/= my collected data on 4-bar losers

User avatar
RegGuheert
Posts: 5607
Joined: Mon Mar 19, 2012 4:12 am
Delivery Date: 16 Mar 2012
Leaf Number: 5926
Location: Northern VA

Re: Dramatic Ahr rise after quick charge?

Fri Aug 25, 2017 6:23 pm

sandeen wrote:Yes, it lived in TX until Feb 2016, when it moved to MN with 9 bars. I understand that it degraded faster in TX than it has/will in MN. Nonetheless, my Ahr trend looked promising until the recent quick charges. It dropped from 50.9Ahr to 43.7Ahr in a bit over 1 year in MN with primarily L1/L2 charges.
That's interesting, since my car currently shows 10 bars and reads about 47.5 Ah. I'm surprised you would be down to 9 bars with 50.9 Ah. What's also surprising is that my car was right about 50.5 Ah last year at this time and has only dropped 3 Ah in one year in VA, while your car has dropped over twice that much in about 1.5 times as long starting from the same point, but in a much colder climate.
RegGuheert
2011 Leaf SL Demo vehicle
10K miles: Apr 14, 2013, 20K miles (55.7Ah): Aug 7, 2014, 30K miles (52.0Ah): Dec 30, 2015, 40K miles (49.8Ah): Feb 8, 2017, 50K miles (47.2Ah): Dec 7, 2017.
Enphase Inverter Measured MTBF: M190, M215, M250, S280

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drees
Moderator
Posts: 6208
Joined: Fri Apr 23, 2010 3:51 pm
Location: San Diego

Re: Dramatic Ahr rise after quick charge?

Fri Aug 25, 2017 6:24 pm

sandeen wrote:Unrelated to my own car, here are some posts (translated from German) showing steady and sustained increase in the LeafSpy Ahr readings - gaining nearly 6 Ahr in the stats - with multiple, frequent quickcharges:

I have only seen instances of AHr rise that high reported on 2013+ LEAFs, never 2011-2012 LEAFs.
'11 LEAF SL Powered By 3.24 kW Enphase Solar PV

sandeen
Posts: 120
Joined: Fri May 12, 2017 1:45 pm
Leaf Number: 026685
Location: Minnesota

Re: Dramatic Ahr rise after quick charge?

Fri Aug 25, 2017 9:20 pm

drees wrote:I have only seen instances of AHr rise that high reported on 2013+ LEAFs, never 2011-2012 LEAFs.

Same person is on these forums (xado1) and their sig does say 2013.
2012 SL from TX, (mfg 8/12), used, dropped to 8 bars at 43.50 Ahr, 40,601 miles. my daily stats =/= my collected data on 4-bar losers

Reddy
Posts: 1442
Joined: Fri Feb 11, 2011 3:09 pm
Delivery Date: 18 Aug 2011
Leaf Number: 006828
Location: Pasco, WA

Re: Dramatic Ahr rise after quick charge?

Sat Aug 26, 2017 4:05 pm

sandeen wrote:
drees wrote:I have only seen instances of AHr rise that high reported on 2013+ LEAFs, never 2011-2012 LEAFs.

Same person is on these forums (xado1) and their sig does say 2013.
I've hesitated to respond on this topic because my report is only after a single, week-long trip. There aren't any DCQC's within 85 mi, so I've been charging via L1 or L2 for most of my six years. However, I have had two summer trips, one pre-Leaf Spy and one post-Leaf Spy, to Western WA/OR allowing use of the DCQCs. I gained about 1 AHr after about a month as described here:
http://mynissanleaf.com/viewtopic.php?f=27&t=14275&p=389721&hilit=arlington#p388565
Reddy
2011 SL; 9 bar, 46.44 AHr; 40,067 mi; rcv'd Aug 18, 2011
Long: http://www.mynissanleaf.com/viewtopic.p ... al#p226115"
Cold: http://www.mynissanleaf.com/viewtopic.p ... 60#p243033"

User avatar
RegGuheert
Posts: 5607
Joined: Mon Mar 19, 2012 4:12 am
Delivery Date: 16 Mar 2012
Leaf Number: 5926
Location: Northern VA

Re: Dramatic Ahr rise after quick charge?

Sun Aug 27, 2017 4:54 pm

RegGuheert wrote:That's interesting, since my car currently shows 10 bars and reads about 47.5 Ah.
Noticed today it is now showing only 9 bars. Ah reading is 47.40.
RegGuheert
2011 Leaf SL Demo vehicle
10K miles: Apr 14, 2013, 20K miles (55.7Ah): Aug 7, 2014, 30K miles (52.0Ah): Dec 30, 2015, 40K miles (49.8Ah): Feb 8, 2017, 50K miles (47.2Ah): Dec 7, 2017.
Enphase Inverter Measured MTBF: M190, M215, M250, S280

sandeen
Posts: 120
Joined: Fri May 12, 2017 1:45 pm
Leaf Number: 026685
Location: Minnesota

Re: Dramatic Ahr rise after quick charge?

Sun Aug 27, 2017 5:02 pm

RegGuheert wrote:That's interesting, since my car currently shows 10 bars and reads about 47.5 Ah. I'm surprised you would be down to 9 bars with 50.9 Ah.

The drop to 9 bars was before I got it, and the 50Ahr reading was by the previous owner, post-drop. I suppose it's possible that Ahr reading rose again after it dropped to 9 bars, but I don't really have much history prior to my ownership.
2012 SL from TX, (mfg 8/12), used, dropped to 8 bars at 43.50 Ahr, 40,601 miles. my daily stats =/= my collected data on 4-bar losers

User avatar
RegGuheert
Posts: 5607
Joined: Mon Mar 19, 2012 4:12 am
Delivery Date: 16 Mar 2012
Leaf Number: 5926
Location: Northern VA

Re: Dramatic Ahr rise after quick charge?

Sun Aug 27, 2017 5:11 pm

sandeen wrote:The drop to 9 bars was before I got it, and the 50Ahr reading was by the previous owner, post-drop. I suppose it's possible that Ahr reading rose again after it dropped to 9 bars, but I don't really have much history prior to my ownership.
What was the highest reading you ever saw?
RegGuheert
2011 Leaf SL Demo vehicle
10K miles: Apr 14, 2013, 20K miles (55.7Ah): Aug 7, 2014, 30K miles (52.0Ah): Dec 30, 2015, 40K miles (49.8Ah): Feb 8, 2017, 50K miles (47.2Ah): Dec 7, 2017.
Enphase Inverter Measured MTBF: M190, M215, M250, S280

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