We've been measuring EV battery lifespan wrong

honestly, owners experience seems more valid than any studies done.

outside of the poorly designed nissan leaf, these batteries last practically forever

 

I have found that on most chat forums, most people are strongly anti-EV.

Whenever I mention that I drive a hybrid, the thread instantly turns into bashing EVs.

Many self-proclaimed experts shout from rooftops that replacement batteries cost $100k, and will only last a minute.

 

I'll do my best not to shout to much at anyone, unless they shout at me first lol ...

The study lost me after the end of the second paragraph. I suppose I should have read further to find out ( hopefully ) what they were trying to say about the

( alternating current frequencies, typically well above 1-10 Hz - references from 29 thru 38 ) ....
Above such frequencies, limited degradation has been observed as electrochemical processes such as charge transfer and diffusion are only partially activated30,39,40 ......
On the other hand, regenerative braking, driving in stop-and-go traffic and so on occur at lower frequencies (<1 Hz)41, but are not well understood42,43.

than the kicker for me was
We aimed to fill this gap by generating and analysing a non-accelerated and dynamically cycled battery dataset that represents realistic EV driving.

That's a pretty bold statement to make about realism. Especially since they are trying to define what is real in the statements made above that sentence.

I get what they are trying to narrow down and I also get that is probably what a majority of readers and writers look for in a published article. If I had the patience to read it all, I might get another idea or two about a study of real EV driving and EV battery degradation, beside my own limited personal experiences.

 

Lithium ion cells last longest when the charge level is kept low, and the number of recharge cycles are kept to a minimum. I drove a Gen 3 Prius Plug-in for 12 years, and lost about 15% of the EV range over that time.
I believe I read somewhere that the battery charge level was kept between 30% and 70% for the purposes of longevity.

This is in contrast to the battery in my Samsung smartphone, which puffed out of the case after about 18 months. I believe this is owing to the fact that it charged to 4.5V, which is above full capacity of 4.2V. I bought an app which limits charge to 80% and so far, the battery seems not to be degrading.

 

Listening to our new president this morning it appears he is in the same category. I wonder if his new best bud Elon can change his mind?

 

Reminds me of the angry old man who was in a store, demanding they sell him an incandescent light bulb. He didn't want "them damned LED things."

Why go with internal combustion, when 3/4 of your energy goes to waste, when an EV can be over 90% efficient?