DaveinOlyWA
Posts: 12582
Joined: Sat Apr 24, 2010 7:43 pm
Delivery Date: 10 Nov 2016
Leaf Number: 314199
Location: Olympia, WA
Contact: Website

Re: Rapid Energy Loss in the Middle of Battery

Sat Feb 10, 2018 6:55 pm

RegGuheert wrote:
DaveinOlyWA wrote:Bad cells worsen as SOC goes down. He claims normalcy when below 25%
Good point. That's weird.


I suspect Nissan instrumentation. The issues of GIDs and therefore SOC not being consistent thru out a charge is not a new thing. I blame Nissan instrumentation. I have to be honest in that I never look at the SOC meter so have no clue how it behaves
2011 SL; 44,598 miles. 2013 S; 44,840 miles.2016 S30 deceased. 29,413 miles. 2018 S40; 129 miles, 491 GIDs, 38.1 Ahr available, 100% on everything else :)
My Blog; http://daveinolywa.blogspot.com" onclick="window.open(this.href);return false;

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RegGuheert
Posts: 5865
Joined: Mon Mar 19, 2012 4:12 am
Delivery Date: 16 Mar 2012
Leaf Number: 5926
Location: Northern VA

Re: Rapid Energy Loss in the Middle of Battery

Sat Feb 10, 2018 7:03 pm

DaveinOlyWA wrote:I suspect Nissan instrumentation. The issues of GIDs and therefore SOC not being consistent thru out a charge is not a new thing. I blame Nissan instrumentation. I have to be honest in that I never look at the SOC meter so have no clue how it behaves
Just today I saw the following on our 9-capacity-bar MY2011 LEAF:

12th bar dropped at 84% SOC
11th bar dropped at 77.8% SOC
10th bar dropped at 77.1% SOC
9th bar dropped some time later.

That was a bit wonky, but LeafSpy reported a steady reduction in SOC as I drove, so I didn't pay much attention to the weird bar behavior.

So, yeah, Nissan's instrumentation leaves a bit to be desired.
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

DaveinOlyWA
Posts: 12582
Joined: Sat Apr 24, 2010 7:43 pm
Delivery Date: 10 Nov 2016
Leaf Number: 314199
Location: Olympia, WA
Contact: Website

Re: Rapid Energy Loss in the Middle of Battery

Sat Feb 10, 2018 7:05 pm

RegGuheert wrote:
DaveinOlyWA wrote:I suspect Nissan instrumentation. The issues of GIDs and therefore SOC not being consistent thru out a charge is not a new thing. I blame Nissan instrumentation. I have to be honest in that I never look at the SOC meter so have no clue how it behaves
Just today I saw the following on our 9-capacity-bar MY2011 LEAF:

12th bar dropped at 84% SOC
11th bar dropped at 77.8% SOC
10th bar dropped at 77.1% SOC
9th bar dropped some time later.

That was a bit wonky, but LeafSpy reported a steady reduction in SOC as I drove, so I didn't pay much attention to the weird bar behavior.

So, yeah, Nissan's instrumentation leaves a bit to be desired.


yeah I saw your rather shocking yo-yo battery stats in another post.
2011 SL; 44,598 miles. 2013 S; 44,840 miles.2016 S30 deceased. 29,413 miles. 2018 S40; 129 miles, 491 GIDs, 38.1 Ahr available, 100% on everything else :)
My Blog; http://daveinolywa.blogspot.com" onclick="window.open(this.href);return false;

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