Stanford research: EV batteries may last 40% longer than we previously thought?

[JeffKeryk]

Stanford University study on EV battery useful lifecycle.

"Real driving with frequent acceleration, braking that charges the batteries a bit, stopping to pop into a store, and letting the batteries rest for hours at a time, helps batteries last longer than we had thought.”
Simona OnoriAssociate Professor of Energy Science and Engineering

Time will tell...

 

[2009Caraman]

Interesting. Perhaps they are putting a little viagra in the batteries these days.

 

[Trav]

Just because she is at Stanford is meaningless. I would want to know is she just another woker or some sort crackpot pushing an agenda, the way colleges and universities are today that is more than just a possibility. A much deeper dive is needed into her beliefs and positions before lending credence to her papers. JMHO

 

[Pablo]

Stanford University study on EV battery useful lifecycle.

"Real driving with frequent acceleration, braking that charges the batteries a bit, stopping to pop into a store, and letting the batteries rest for hours at a time, helps batteries last longer than we had thought.”
Simona OnoriAssociate Professor of Energy Science and Engineering

Time will tell...

This is actually fitting reality in bikes, cars, tools, etc. So I basically agree with her, we need to look at our predictive modeling,

But wow - people give the battery hate a rest.

 

[OneLonelyBurrito]

Stanford University study on EV battery useful lifecycle.

"Real driving with frequent acceleration, braking that charges the batteries a bit, stopping to pop into a store, and letting the batteries rest for hours at a time, helps batteries last longer than we had thought.”
Simona OnoriAssociate Professor of Energy Science and Engineering

Time will tell...

Makes sense, testing is generally always worse case scenario. Rapid charge and discharge I imagine is worse case for a battery and probably what was used in development testing and used to extrapolate from to predict end of life. In the real world you are very rarely actually meeting the worse case situations the batteries were designed and tested too and the real world is probably even less damaging then anticipated.

 

[OneLonelyBurrito]

Just because she is at Stanford is meaningless. I would want to know is she just another woker or some sort crackpot pushing an agenda, the way colleges and universities are today that is more than just a possibility. A much deeper dive is needed into her beliefs and positions before lending credence to her papers. JMHO

She is a professor at a top university doing battery research and development, I assume she believes in the development of battery technologies. The journal the paper is published in is highly rated journal, so the paper is definitely peer reviewed. The paper is open access if you want to read it yourself along with the data set if you would like to try and replicate the results yourself to see if she has an agenda.

 

[dubber09]

She's likely researching what she's paid to research and potentially publishing findings as per 'expectations' from said research. Most what she says is common sense anyway.

 

[BobsArmory]

Some of these professors think a man can get pregnant.

 

[Pablo]

Some of these professors think a man can get pregnant.

That's not typically a subject related to batteries.

You guys are kinda nuts on the battery hate. Stupid is another word.

 

[Trav]

This is actually fitting reality in bikes, cars, tools, etc. So I basically agree with her, we need to look at out predictive modeling,

But wow - people give the battery hate a rest.

No battery hate, I own plenty of cordless stuff, it is about truthfulness as opposed to agenda driven tripe.

She is a professor at a top university doing battery research and development, I assume she believes in the development of battery technologies. The journal the paper is published in is highly rated journal, so the paper is definitely peer reviewed. The paper is open access if you want to read it yourself along with the data set if you would like to try and replicate the results yourself to see if she has an agenda.

So what? I wont got into it here but you must be able to look up peer reviewed professors who were proven fraudsters. She may be on the up and up who knows but until her findings are proven in the real world call me a skeptic.

 

[KGMtech]

My take is, from the Canadian climate at this time, our only hope for EV future is Global Warming. I might have skipped some details, but do tell.

 

[Carmudgeon]

So what? I wont got into it here but you must be able to look up peer reviewed professors who were proven fraudsters. She may be on the up and up who knows but until her findings are proven in the real world call me a skeptic.

Not taking sides, but that may be wise.

But dude, you gotta stop taking the bait.

 

[Cujet]

Reminds me of the 'Severe Use' oil changes where engines don't hold up when poorly maintained for the conditions.

I'd say that the type of use, the type of charging and temperature all play a large role. The 2170/21700 battery is flat out fantastic. Yet there are examples of Uber drivers who can absolutely, with 100% certainty, kill one in 120K miles.

40% longer life has requirements, does it not?

 

[97prizm]

Stanford University study on EV battery useful lifecycle.

"Real driving with frequent acceleration, braking that charges the batteries a bit, stopping to pop into a store, and letting the batteries rest for hours at a time, helps batteries last longer than we had thought.”
Simona OnoriAssociate Professor of Energy Science and Engineering

Time will tell...

Yeah and add by which metric and are there any legitimate tests or specific battery manufacturers that this can be attributed to?

 

[OneLonelyBurrito]

She's likely researching what she's paid to research and potentially publishing findings as per 'expectations' from said research. Most what she says is common sense anyway.

The funding sources were listed right in the paper, and if you don't have the data, your "expectation" are just a hypothesis. Now there is data to back up the expectations.

So what? I wont got into it here but you must be able to look up peer reviewed professors who were proven fraudsters. She may be on the up and up who knows but until her findings are proven in the real world call me a skeptic.

While yes, there have been plenty of peer reviewed stuff has been later proven as wrong, actual fraud is in the minority. Unless you have better way to push research forward, peer reviewing seems like the best we can do right now cause most of what universities are publishing is on the cutting edge technology. So while it is fine to be a skeptic of it if you read through the paper, calling it fraud without anything to back it up when the paper and data is free and publicly available is a stretch.

If you actually read the paper, it is about testing different battery test methodologies, that way in the future battery life cycle testing more accurately predicts the end of life for the battery in the real world. Doing these tests in the laboratory is the first step to doing them in the real world.

 

[fdcg27]

Couple of others of the anti EV coven have yet to show up in this thread, but I'm sure they'll be along.
The good news is that we have some solid data to suggest that battery life is less of a concern than we may have thought.

 

[SC Maintenance]

When the original Prius came out I remember all the naysayers quoting a new battery would be $18K and the car was junk at 100K. Yet many went 200-300K on original battery.

I am guessing its going to be like this. Some batteries will last forever. And some will quit at 101K . There will be a class action and no one will admit anything.

 

[LenZee]

When the original Prius came out I remember all the naysayers quoting a new battery would be $18K and the car was junk at 100K. Yet many went 200-300K on original battery.

I am guessing its going to be like this. Some batteries will last forever. And some will quit at 101K . There will be a class action and no one will admit anything.

Here is some prices on new upgraded battery packs:
https://www.greentecauto.com/product-category/toyota-hybrids/prius-hybrid-batteries
Not too much $$ at all.

 

[BISCUT]

Just because she is at Stanford is meaningless. I would want to know is she just another woker or some sort crackpot pushing an agenda, the way colleges and universities are today that is more than just a possibility. A much deeper dive is needed into her beliefs and positions before lending credence to her papers. JMHO

Softer way...

Who paid for the study?

 

[SC Maintenance]

The article brings up some interesting points.

However I don't think its completely accurate for a very simple reason - the big EV manufacturers already have way more data than any lab study is going to produce. So they already know the likely longevity, and have optimized the charge profile to the use case, and there probably already cheapening the batteries to benefit from what they know.

Shorter - as usual the academics are behind.