sandeen
Posts: 70
Joined: Fri May 12, 2017 1:45 pm
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, 9 bars, 40k miles. my daily stats =/= my collected data on 4-bar losers

Durandal
Posts: 302
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: 70
Joined: Fri May 12, 2017 1:45 pm
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, 9 bars, 40k miles. my daily stats =/= my collected data on 4-bar losers

User avatar
RegGuheert
Posts: 5503
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
2011 miles at purchase. 10K miles on Apr 14, 2013. 20K miles (55.7Ah) on Aug 7, 2014, 30K miles (52.0Ah) on Dec 30, 2015, 40K miles (49.8Ah) on Feb 8, 2017.
Enphase Inverter Measured MTBF: M190, M215, M250, S280

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drees
Moderator
Posts: 6193
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: 70
Joined: Fri May 12, 2017 1:45 pm
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, 9 bars, 40k miles. my daily stats =/= my collected data on 4-bar losers

Reddy
Posts: 1409
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: 5503
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
2011 miles at purchase. 10K miles on Apr 14, 2013. 20K miles (55.7Ah) on Aug 7, 2014, 30K miles (52.0Ah) on Dec 30, 2015, 40K miles (49.8Ah) on Feb 8, 2017.
Enphase Inverter Measured MTBF: M190, M215, M250, S280

sandeen
Posts: 70
Joined: Fri May 12, 2017 1:45 pm
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, 9 bars, 40k miles. my daily stats =/= my collected data on 4-bar losers

User avatar
RegGuheert
Posts: 5503
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
2011 miles at purchase. 10K miles on Apr 14, 2013. 20K miles (55.7Ah) on Aug 7, 2014, 30K miles (52.0Ah) on Dec 30, 2015, 40K miles (49.8Ah) on Feb 8, 2017.
Enphase Inverter Measured MTBF: M190, M215, M250, S280

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