philibuster
Posts: 3
Joined: Tue Aug 11, 2020 11:41 am
Delivery Date: 20 Aug 2020

Intentionally buying marginal battery on 3-year old leaf?

Tue Aug 11, 2020 11:52 am

I see on one of the stickies regarding batteries and warranty that the 30kwh batteries in the 2017 leaf are able to be replaced with 40kwh batteries under warranty.

I am shopping for a USED leaf, and it has been hinted that there is a strategy of finding a 30kwh leaf under battery warranty with lower battery health. Specifically, I am looking at a 10-bar 2017 leaf SV from Arizona. Is there a way to confirm that a battery is still covered under warranty? The exclusions list on the warranty sheet say >120F over 24hrs. Is there a datalogger on the battery to confirm that it did not reach this temperature exclusion? Can a dealer tell me if it is OK? I am looking at a leaf from carmax in Arizona, and I doubt they have the necessary tools (or desire) to read the data.

Some background: I only need about 38 miles every day round trip, and this will be a third car, which will never be taken on long trips, so I can eat some battery degradation off the ~100 miles without it impacting me. I can also top up charge at my workplace if I ever need to. I live in Colorado, and have a 4x4 truck for slippery winter roads.

LeftieBiker
Moderator
Posts: 15518
Joined: Wed May 22, 2013 3:17 am
Delivery Date: 30 Apr 2018
Location: Upstate New York, US

Re: Intentionally buying marginal battery on 3-year old leaf?

Tue Aug 11, 2020 2:16 pm

The car does record high battery temps - otherwise Nissan would have no way of knowing if the warranty was violated. I have no recollection of anyone ever reporting a warranty being violated by sustained high temps, though. The pack has a lot of mass, and a 120F day wouldn't come near heating it to 120F. The risk is more from body shop paint booth heaters.
Scarlet Ember 2018 Leaf SL W/ Pro Pilot
2009 Vectrix VX-1 W/18 Leaf modules, & 3 EZIP E-bicycles.
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PLEASE don't PM me with Leaf questions. Just post in the topic that seems most appropriate.

Steelcity
Posts: 27
Joined: Wed May 13, 2020 5:31 am
Delivery Date: 13 Jun 2013
Location: Pittsburgh

Re: Intentionally buying marginal battery on 3-year old leaf?

Tue Aug 11, 2020 2:18 pm

I love the strategy, keep us posted . :D
2013 S Bought used 2020 33,000 11 bars
Led headlights
4.8 miles per kwh
4.9 miles per kWh (8/14/20)
5.0 miles per kwh (9/30/20)

philibuster
Posts: 3
Joined: Tue Aug 11, 2020 11:41 am
Delivery Date: 20 Aug 2020

Re: Intentionally buying marginal battery on 3-year old leaf?

Tue Aug 11, 2020 2:35 pm

Thanks for the input. Right now it shows 68 mi per full charge! Yeesh! But I have 5 years (or 75,000mi) to lose 2 more bars and get a replacement battery under warranty. It's a carmax, so I can probably get it inspected by the dealership to read it and see if I want to keep it within 30 days.

SageBrush
Posts: 5280
Joined: Sun Mar 06, 2011 2:28 am
Delivery Date: 13 Feb 2017
Location: NM

Re: Intentionally buying marginal battery on 3-year old leaf?

Tue Aug 11, 2020 2:56 pm

There is no free lunch, and OP is not the first, or even the 1,000th person to consider this strategy.

It has risks that the gambler should be aware of:
1. Nissan refuses warranty
2. Nissan goes tits up
3. Nissan closes its EV program
4. Nissan puts in a refurb battery
5. Nissan replaces a bad cell instead of the pack
6. Nissan replaces with another crappy 30 kWh battery
7. Nissan delays
8. The degradation is less than the display says, and after the software update the battery lasts past warranty expiration.
9. Nissan replaces with a 40 kWh battery that failed QC for new cars. Degradation path unknown

Nissan has been very clear for years that they offer NO customer goodwill, and if there is any way for them to legally not fulfill a warranty they will do so. Their current corporate financial plight is only going to push them to be the worse corporate jackasses they can be. And that is saying something, since we are talking about Nissan.

OP: are you feeling lucky ? Do you have the money to lose ?
Last edited by SageBrush on Wed Aug 12, 2020 6:51 am, edited 1 time in total.
2013 LEAF 'S' Model with QC & rear-view camera
Bought Jan 2017 from N. California
Two years in Colorado, now in NM
03/18: 58 Ahr, 28k miles
11/18: 56.16 Ahr, 30k miles
09/20: 54.3 Ahr; 38k miles
-----
2018 Tesla Model 3 LR, Delivered 6/2018

philibuster
Posts: 3
Joined: Tue Aug 11, 2020 11:41 am
Delivery Date: 20 Aug 2020

Re: Intentionally buying marginal battery on 3-year old leaf?

Tue Aug 11, 2020 3:37 pm

This is a third vehicle that will do mainly in-town and commuting in clear weather. My current daily driver is a 16mpg truck, which is not nice on the pump. I am not relying on this, and I also only need 40 miles/day. If it can't do that with 9 bars of battery, I suppose I'm barking up the wrong tree here. It's also not going to break the bank for me if I have to pay out of pocket to have a battery refurbed or replaced. I guess I'm asking if there's greater than 50% chance it'll work out in my favor!

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