Reset Capacity Bars

[electromotive]

Who is capable of resetting the capacity bars on a LEAF? Only a dealership? Is it only my imagination, or are an excessive number of 2011-2013 LEAFs now appearing with questionable bars? Thank you.

[arnis]

Anybody who has access to Nissan's diagnostic software.

Most likely some of those Leafs have their batteries replaced.
Also some of those Leafs may come from colder regions.
Cold region degradation is slower, expect up to 5x slower.

Whoever is buying second-hand Leaf should test the range on highway.
It only takes an hour

[Stanton]

Bottom line: you should never buy a used Leaf without putting some sort of GID meter on it (LeafSpy/LeafDD/etc).

[DuncanCunningham]

so when you plug in leafspy pro.. what number should you look at to see past any messing about with the bars?

[dhanson865]

so when you plug in leafspy pro.. what number should you look at to see past any messing about with the bars?

Ahr and SOH are the only two I'd look at.

A new battery is 66 ahr, 1 bar lost around 50 ah, 2 bars lost around 46ah, 3 bars lost around 42 ah.

If the ahr are low and the bars are high they reset it, not a bad thing on its own but if you drop 4 bars in 60,000 miles or 60 months you get a free battery from Nissan, go over the months or miles and you don't.

You just want to know what you are really dealing with.

If the ahr is reasonable vs the bars on the dash then you can use SOH% as the easier to look at number on a 100% style scale but that number resets with the dash bars so use ahr to see if you can trust it then SOH% for a convenient percentage.

in table form

* Brand new - about 66.25 Ahr#
* Loss of bar 12 - between 53.75 AHr and 56 AHr
* Loss of bar 11 - between 49.75 AHr and 52 AHr
* Loss of bar 10 - between 45.75 AHr and 48 AHr
* Loss of bar 9 - between 41.75 AHr and 44 AHr

\#table is for 24 kWh packs, numbers would differ for a 30 kWh pack.

[SurfHawk]

I used Leaf Spy to buy a 12 bar 2013 a month ago. SOH was 91% and AHR was 59, so I bought it. Now a month later im 87% SOH and 56 AHR. Not sure what's going on, but I didn't think it was reset based on AHR.

[JimSouCal]

I used Leaf Spy to buy a 12 bar 2013 a month ago. SOH was 91% and AHR was 59, so I bought it. Now a month later im 87% SOH and 56 AHR. Not sure what's going on, but I didn't think it was reset based on AHR.

colder weather, colder pack?

[LeftieBiker]

I used Leaf Spy to buy a 12 bar 2013 a month ago. SOH was 91% and AHR was 59, so I bought it. Now a month later im 87% SOH and 56 AHR. Not sure what's going on, but I didn't think it was reset based on AHR.

Do you charge to 100% or 80%? If the latter, try checking it after a full 100% charge.

[AntronX]

I used Leaf Spy to buy a 12 bar 2013 a month ago. SOH was 91% and AHR was 59, so I bought it. Now a month later im 87% SOH and 56 AHR. Not sure what's going on, but I didn't think it was reset based on AHR.

How many miles do you get on full 100% charge before low battery warning? How many miles per kWh do you drive?

[SurfHawk]

- Weather has been about the same since I bought it, maybe a bit cooler but we are still talking about southern california.

- First couple weeks I only charged to 80%. Then I read about re-balancing so I've been charging to 100%. However I have been using the charging timer, does that let it re-balance? Also, I am only charging via L1 at home, getting L2 installed next week. Some brief L2 charging in the wild a few times a week.

- I haven't tracked how many miles I get from 100% to LBW. I'm doing about 1/2 freeway driving at 65, and half city driving. I average about 4.2mi/kWh.

Here is a screenshot with Leaf Spy prediciting I'll get 72miles until 10% at 100% charge @ 4.4mi/kWh, which I'm happy with for what I thought was a 91% SOH car. EDIT: sorry for giant photos, will try to fix.


Here is my latest AHR and SOH