[RichardC]

Seems like info we all basically know by now, still a good reminder: https://ww.electrek.co/2019/12/14/8-lessons-about-ev-battery-health-from-6300-electric-cars/

 

[ZoomZoom]

I couldn't locate the report, but I did play with the data tool in the article. It didn't allow us to see what the degradation increase they are reporting for those the DCFC. Otherwise, promising report.

 

[discodanman45]

I tell everyone to avoid the Leaf, especially in my area where it is 100 degrees most of the summer. Research shows that passive cooled batteries have higher degradation by about two times. My two EVs have 166,000 combined miles on them and degradation is about 5% on each car. Just stay away from the Nissan Leaf and batteries will last 300,000 miles.

 

[redpoint5]

What's interesting to me is the BMW i3 shows the worst degradation. Low sample size perhaps?

 

[discodanman45]

What's interesting to me is the BMW i3 shows the worst degradation. Low sample size perhaps?

The small size if the battery is probably part of the reason. A battery a third of the size will degrade three times faster because of charge cycles.

 

[redpoint5]

The small size if the battery is probably part of the reason. A battery a third of the size will degrade three times faster because of charge cycles.

That's a good theory. What is missing is the Chevy Spark. It has similar range to the i3, so it would be a good comparison.

 

[opsdave]

Thanks for sharing this, great info!

 

[Pvillerob]

DC fast charging, air cooling wear out EV batteries faster, study shows

A new study looked at 6,300 electric cars, and it was clear what led batteries to degrade quicker.

www.cnet.com

 

[discodanman45]

That's a good theory. What is missing is the Chevy Spark. It has similar range to the i3, so it would be a good comparison.

It is really hard to compare cars because of size of batteries, how much buffer do they use, where the buffer is allocated, type of battery, type of cooling system used, range of cooling, power draw of motors, type of charging, etc... The only thing I know is I am only buying GM and Tesla EVs until the other car manufacturers show that their battery management is in the same ballpark.

 

[Lin19687]

There are too many variables to this.
Where are these cars used, Vegas - Alaska? HUGE difference in my book for this. How many actual cars were used for each model for them to get these numbers?

I find it a bit off that the 2012 Leaf has better battery then the 2014 ???