Nissan Leaf

[MetroMPG]

Originally Posted by redpoint5

Knowing battery degradation is useful, especially for potential buyers of a used vehicle.

As a buyer, knowing battery health is more important than knowing the estimated range for the previous owner.

True and true. But that's an engineer/nerd's perspective. It just gives regular people something to worry over and post negative messages on LEAF forums.

Do any other EV makers have a similar gauge?

[dwtaylorpdx]

Interesting thought there,, Wonder if the industry will provide a test device to do a battery profile of the battery packs. Seems like a product opportunity, kind of like getting a compression test or leak down done on a used car.. Could see one of the battery monitor manufacturers getting in to it, especially with Some UPS systems starting to use big Li battery packs these days..

[sendler]

It would have to be accomplished over CAN. The Leaf has a very highly functional app for all important battery data already. Including cell by cell voltage and remaining health scores.

[dwtaylorpdx]

But the 5000 dollar question would be,, can you trust the data? A direct battery connection would show the state without vendor software in the way. Of course the tester machine would have to be able to handle the different cell layouts and such.. May even have to have a load bank to allow a full discharge test of the battery..

[MetroMPG]

Yes!

I think after they fired the guy who OK'd the battery health gauge in the Leaf, they might have promoted the guy who suggested a "revision" to the software that controls the display.

[sendler]

Originally Posted by dwtaylorpdx

But the 5000 dollar question would be,, can you trust the data?

Obviously 100's if not 1000 users of the LeafSpy app over the last several years have generated excellent real world data. Check the Leaf forum for many threads based on this info. What you asked for has already existed for many years.
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https://play.google.com/store/apps/d..._Spy_Pro&hl=en
.

[wdb]

My neighbor with the used Leaf is not happy. She says her range is down to 60 miles.

[rmay635703]

Originally Posted by wdb

My neighbor with the used Leaf is not happy. She says her range is down to 60 miles.

If the battery is degraded enough Nissan will replace it

[sendler]

If it drops the fourth bar to eight bars remaining before 60 months and 60,000 miles.

[dwtaylorpdx]

Originally Posted by sendler

Obviously 100's if not 1000 users of the LeafSpy app over the last several years have generated excellent real world data. Check the Leaf forum for many threads based on this info. What you asked for has already existed for many years.
.
https://play.google.com/store/apps/d..._Spy_Pro&hl=en
.

Which Nissan could crush with a simple software upgrade..
I'm just thinking in terms of all the times major OEM's have been caught cooking the books with software in cars,, Ford, VW,Audi,BMW, etc have all been caught with software features that report misleading data.. In this case your talking a minor round up on a statistic.. Easy and hard to spot.. I personally don't own a Leaf I have the Honda Fit, so I get nothing but the lame data from the dash.. But its cheap and in 23 months ti will go away, till then I'll have fun with it..