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RegGuheert
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Leaf Number: 5926
Location: Northern VA

Will ANY 2011/2012 LEAFs still have 80% capacity at 5 years?

Mon Mar 24, 2014 12:04 pm

Put another way, will we see ANY 2011/2012 LEAFs which cross the five-year mark with either 11 or 12 battery capacity bars still showing?

The reason I am using this metric is because of the statement Nissan made on page EV-3 of the 2011 LEAF Owner's Manual:
2011 LEAF Owner's Manual page EV-3 wrote:NISSAN estimates that battery capacity will be approximately 80% of original capacity after five years, although this is only an estimate, and this percentage may vary (and could be significantly lower) depending on individual vehicle and Li-ion battery usage.
I've been thinking about this question quite a bit lately as our LEAF has gone through the coldest winter that we have seen in a LONG time, yet it has steady lost capacity with very little driving. At this point we have about 58 Ah capacity remaining, which is about 87.5% of the original 66.25 Ah. We have owned our LEAF for about two years now, but it is a demo with 2.5 years gone from the warranty.

I am one who believes that calendar losses on the LEAF are closer to linear than logarithmic, so I expect our battery capacity to drop below the 80% mark well before five years are up. The question I have is if even low-mileage LEAFs found in cold climates will achieve the level that Nissan officially estimated in our Owner's Manuals.
RegGuheert
2011 Leaf SL Demo vehicle
10K mi. on 041413; 20K mi. (55.7Ah) on 080714; 30K mi. (52.0Ah) on 123015; 40K mi. (49.8Ah) on 020817; 50K mi. (47.2Ah) on 120717; 60K mi. (43.66Ah) on 091918.
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Reddy
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Re: Will ANY 2011/2012 LEAFs still have 80% capacity at 5 ye

Mon Mar 24, 2014 12:15 pm

Good question Reg. We're in the same boat and we'll have to see. I opted out of the class action suit for this very reason. If we, cold-weather, low mileage drivers don't see 80% at 5 yr, then Nissan was flat out lying. I still enjoy the car, and will drive it until it has less than 20 mi range. However, if that is before 2030, I will be disappointed.
Reddy
2011 SL; 9 bar, 45.80 AHr; 45,000 mi; rcv'd Aug 18, 2011
Long: http://www.mynissanleaf.com/viewtopic.p ... al#p226115"
Cold: http://www.mynissanleaf.com/viewtopic.p ... 60#p243033"

scottysize
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Leaf Number: 1543
Location: Sanger, TX

Re: Will ANY 2011/2012 LEAFs still have 80% capacity at 5 ye

Mon Mar 24, 2014 12:22 pm

We don't have 80% now after 3 years, so, no I don't think the other 2011/12 Leafs will either.
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klapauzius
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Leaf Number: 0197
Location: Seattle, Wa

Re: Will ANY 2011/2012 LEAFs still have 80% capacity at 5 ye

Mon Mar 24, 2014 12:28 pm

Ours is now 3 Years and 2 months old and still shows 12 bars, though capacity is down to 60 Ah, which is ~ 90%.
If the theory of slowing capacity loss over time holds (even if there was linear degradation over time), I would expect to lose less than 10% in the next 2 years.

So yes, 80% after 5 years in the almost optimal Pacific Northwest climate seems possible.
Last edited by klapauzius on Mon Mar 24, 2014 3:13 pm, edited 1 time in total.

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dgpcolorado
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Re: Will ANY 2011/2012 LEAFs still have 80% capacity at 5 ye

Mon Mar 24, 2014 12:29 pm

I'd guess that some of the coastal PNW and Canadian LEAFs will make it. But, yes, Nissan was dead wrong about the battery capacity for most places.
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garygid
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Re: Will ANY 2011/2012 LEAFs still have 80% capacity at 5 ye

Mon Mar 24, 2014 2:08 pm

The words "estimate", and "significantly less" are rather important to understand.

Mine is still showing 12 cap bars, after 3 years, but it has the original firmware,
and is probably down about 13 percent. However, we have yet to see what the
next 24 months brings.
See SOC/GID-Meter and CAN-Do Info
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cwerdna
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Re: Will ANY 2011/2012 LEAFs still have 80% capacity at 5 ye

Mon Mar 24, 2014 10:28 pm

dgpcolorado wrote:I'd guess that some of the coastal PNW and Canadian LEAFs will make it. But, yes, Nissan was dead wrong about the battery capacity for most places.
Agree.

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EVDrive
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Leaf Number: 776
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Re: Will ANY 2011/2012 LEAFs still have 80% capacity at 5 ye

Tue Mar 25, 2014 12:40 am

garygid wrote:The words "estimate", and "significantly less" are rather important to understand.

Mine is still showing 12 cap bars, after 3 years, but it has the original firmware,
and is probably down about 13 percent. However, we have yet to see what the
next 24 months brings.
Same here, 3 years in and 44k miles later I have 12 bars and feel down 10-14% on range. April 2011 firmware.

Wouldn't it be nice if the range went up over time!!
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camasleaf
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Location: Camas, WA

Re: Will ANY 2011/2012 LEAFs still have 80% capacity at 5 ye

Tue Mar 25, 2014 7:38 am

Almost 37000 miles 2 years and 9 months, 56.56Ah SOC 86%, latest firmware, all capacity bars. The last two days the 80% gave me only 9 charging bars :o . Still, if the degraedation is linear, I should be over 70% at the 5 year mark.
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hill
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Leaf Number: 0659
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Re: Will ANY 2011/2012 LEAFs still have 80% capacity at 5 ye

Tue Mar 25, 2014 9:45 am

Now that it's March of 2014 - and looking back 3 years, we're just getting to the place where there are/were a few hundred leafs delivered. With the crowd that are already complaining of premature capacity loss - I'd think the more germain question would be whether or not will any 2011's have 12 bars at FOUR years. Like the other Gary, my 3yr aniversary is right about now (actually - day after tomorrow). At 40k+ miles & 3yrs, I still have all 12bars ... but I doubt ANY one baby drives / charges like I do ... seldom charging/discharging anything but the middle 50% ... with most of that finishing before 4am. If I can't make it to 48k-50k miles & 4 years with all GOM bars ... NO one can. that's my goal ... wish me luck!
:D

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