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Marktm
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Joined: Thu Jan 21, 2016 10:49 am
Delivery Date: 09 Jan 2016
Leaf Number: 022737

Curious about "refurbishing" the Leaf HV battery

Mon Apr 10, 2017 10:43 am

What is the current status of "repair/rebuilding" of old Leaf battery packs?
- Do essentially all cells degrade at the same rate, resulting in minimal opportunity to simply replace the minimal number of bad cells and regain much energy capacity? This would indicate Nissan has done a good job on cell quality control and battery management?
- Are new Leaf cells readily available? Have the cells changed over the years of manufacture so that you cannot mix old/new anyway? Would the BMS handle a mix of old/new?
- Anyone know of a (successful) business that is actually refurbishing the Leaf battery?

Having owned a used 2012 Leaf and was lucky enough to get a new HV battery under warranty, it seems obvious that essentially all components of this car will by far outlast the original battery - what a shame if there is no way to economically keep them on the road!
2012 Leaf SL; 34,000 miles. 12 bars - Battery replaced November 1st, 2016.
4000 watts Grid-tied solar. 3000 watts (level II) off-grid solar Leaf charging capable.

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

Re: Curious about "refurbishing" the Leaf HV battery

Mon Apr 10, 2017 11:09 am

Most times the cells degrade at about the same rate. The only exception is packs with manufacturing defects.
2013 "Brilliant Silver" SV with Premium Package and no QC, and 2009 Vectrix VX-1 with 18 Leaf cells.

The most offensive, tasteless phrase in use here is "Pulled the trigger." I no longer respond to posts that use it.

baustin
Posts: 401
Joined: Tue Feb 24, 2015 1:23 pm
Delivery Date: 09 Mar 2015
Leaf Number: 402162
Location: North Las Vegas, NV

Re: Curious about "refurbishing" the Leaf HV battery

Mon Apr 10, 2017 6:32 pm

I am not aware of any business enterprises that have popped up to do this. Check the Pacific forum in the Local groups. User Cor has been doing this. He takes the cells from newer batteries out of wrecked Leafs and uses them to replace the cells in older battery packs.
2013 Leaf SV - Cayenne Red - QC Port - LED Headlights

DaveinOlyWA
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Leaf Number: 314199
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Re: Curious about "refurbishing" the Leaf HV battery

Tue Apr 11, 2017 8:10 am

Balance or even degradation of the cells determines your pack's longevity. Unlike a tug of war where stronger members can support weaker members, your pack is a chain. Doesn't matter how strong your individual cells are because the pack's strength is equal to its weakest cell.
2011 SL; 44,598 miles. 2013 S; 44,840 miles. 2016 S30; 11311 miles. 363 GIDs, Ahr 82.34, Hx; 102ish% kwh 28.1
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rmay635703
Posts: 325
Joined: Wed Jan 19, 2011 7:43 pm

Re: Curious about "refurbishing" the Leaf HV battery

Tue Apr 11, 2017 12:07 pm

Lithium batteries generally can't be refurbished in any meaningful way, they can be replaced however.

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Marktm
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Joined: Thu Jan 21, 2016 10:49 am
Delivery Date: 09 Jan 2016
Leaf Number: 022737

Re: Curious about "refurbishing" the Leaf HV battery

Thu Apr 13, 2017 5:46 pm

Appreciate the feedback - as expected, it does not seem promising that older Leafs with degraded batteries (and out of warranty) have much of a future except for what they actually do best - limited mileage trips combined with home charging to the max (in my case a 3.3kw level II charge controller). Sort of a NEV.

Actually my experience with a 8/9 bar Leaf for "suburban driving" for a almost a year was very good. An occasional 60 mile trip was challenging, but always made it - with good planning for quick charging.
2012 Leaf SL; 34,000 miles. 12 bars - Battery replaced November 1st, 2016.
4000 watts Grid-tied solar. 3000 watts (level II) off-grid solar Leaf charging capable.

Tpsfoto
Posts: 11
Joined: Wed Jul 15, 2015 6:02 pm
Delivery Date: 16 Jul 2015

Re: Curious about "refurbishing" the Leaf HV battery

Sun Apr 16, 2017 2:03 pm

I just lost the 4th bar today.. On my 2012 with 27k miles on it , what pack are they putting in? The 2017 I hope.
My warranty is over in December.....should I wait closer to December?
Thanks
Larry

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

Re: Curious about "refurbishing" the Leaf HV battery

Sun Apr 16, 2017 3:07 pm

They are putting in the 2015-2016 24kwh "Lizard" pack, not the new 30kwh one. If it were me, I'd wait until Fall to have it done, if possible, to avoid this Summer's heat on the new pack.
2013 "Brilliant Silver" SV with Premium Package and no QC, and 2009 Vectrix VX-1 with 18 Leaf cells.

The most offensive, tasteless phrase in use here is "Pulled the trigger." I no longer respond to posts that use it.

User avatar
Marktm
Gold Member
Posts: 269
Joined: Thu Jan 21, 2016 10:49 am
Delivery Date: 09 Jan 2016
Leaf Number: 022737

Re: Curious about "refurbishing" the Leaf HV battery

Sun Apr 16, 2017 7:01 pm

Tpsfoto wrote:I just lost the 4th bar today.. On my 2012 with 27k miles on it , what pack are they putting in? The 2017 I hope.
My warranty is over in December.....should I wait closer to December?
Thanks
Larry


The dealer that replaced my battery was willing to work with me on when I wanted the new battery installed. I did have them confirm that I was eligible for the free replacement soon after the 4th bar drop as I felt it was important to get their confirmation of the free replacement.
The dealer was OK with waiting until I wanted to have the new battery installed - for several months if I preferred. As they stated it would take 2-3 months to get the new battery, I agreed to them ordering the new battery. As it turned out, the battery came in about 4 weeks and I did not want it sitting around, so they installed it soon after.
I was tempted to wait (Sept 2017 was end of original battery warranty), but decided that "a bird in the hand" was the way to go. I have enjoyed the increased range!
2012 Leaf SL; 34,000 miles. 12 bars - Battery replaced November 1st, 2016.
4000 watts Grid-tied solar. 3000 watts (level II) off-grid solar Leaf charging capable.

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