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Re: Battery Degradation vs Battery Limited Warranty

Posted: Thu Dec 06, 2018 6:28 am
by NORTON
agdodgerfan wrote:I honestly don't think that's accurate I think it doesn't take into account region because when I did try and track in the past it was all over the place. ...
Huh, mine has variations but in a small range. And then you can average that. I'm not gathering data this time of year bc I plug in at work and at home and never use more than 50%.
I hate winter. :oops: I have to buy electrons to drive the car this time of year, bc I want the pack to be in the happy temp range. :cry: :)


It's just some additional data.
It would be great if you could gather some additional data points to compare to the one time OBD-II measurement.

And then post them here !!

Re: Battery Degradation vs Battery Limited Warranty

Posted: Sat Aug 24, 2019 9:42 am
by CypressVH
My 2014 Spark EV has about 43k miles and battery capacity (based on the GOM) is down to about 14.8kWh.

Re: Battery Degradation vs Battery Limited Warranty

Posted: Sat Aug 24, 2019 9:43 am
by CypressVH
Anyone with iPhone and a Spark EV figure out how to get the battery data from the OBD port?

Re: Battery Degradation vs Battery Limited Warranty

Posted: Wed Oct 02, 2019 1:50 pm
by canspark
8-)
Yep. It works great. App has kinda old school UI/iOS 8, but functionally good.

Re: Battery Degradation vs Battery Limited Warranty

Posted: Sun Jul 26, 2020 10:35 am
by Offenbach
I own a 2015 Chevy Spark EV with just under 23,000 miles on it. I bought it used and I did purchase a separate battery warranty in addition to GM's. That warranty provides for repair or replacement if the battery capacity falls below 70%. Until very recently, I was able to charge the battery up to 76-78 miles before charging shutdown showing fully charged. Then, one day recently, it would only charge to 68-69 miles before shutdown. Like an earlier posting, I was expecting a more gradual degradation. I will determine my battery's use percentage by using the formula suggested. I do live in the middle gulf coast of Florida, and the weather now is much hotter than in the winter or spring, so maybe that has something to do with it. It's not so much that I'm concerned now - the mileage available is fine for my needs - it's the concern I feel if another big drop-down is in my near future.

Re: Battery Degradation vs Battery Limited Warranty

Posted: Sun Jul 26, 2020 11:00 am
by TheLondonBroiler
Offenbach wrote:
Sun Jul 26, 2020 10:35 am
Until very recently, I was able to charge the battery up to 76-78 miles before charging shutdown showing fully charged. Then, one day recently, it would only charge to 68-69 miles before shutdown. Like an earlier posting, I was expecting a more gradual degradation. I will determine my battery's use percentage by using the formula suggested. I do live in the middle gulf coast of Florida, and the weather now is much hotter than in the winter or spring, so maybe that has something to do with it.
Documenting your capacity every few months, is pretty essential to maintaining your sanity, if you're a bit paranoid about these things (I'm guilty of it as well). From what I've experienced, barring a component becoming defective, degradation in the Spark is a gradual experience. I'd be willing to bet the hot weather and corresponding AC use has everything to do with your range drop. Florida is one of the few places where your winter range is probably as good as, if not better than your summer range, because most people can get by without needing the heater during a "Florida Winter."