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Message
1
Posted on 6/30/22 at 9:33 am to Tarps99
quote:
They could just have those charged batteries only 75% charged.
Apparently repeatedly charging some of the EV batteries to 100% will degrade battery life, so it is recommended to only charge to 80%. so this would likely be the reality.
Looks like Tesla has now moved it up to 90%
“Repeated full charges can negatively impact li-ion battery cells, which is why Tesla recommends to only daily charge to 90% capacity and to charge to 100% only when needed for long trips.
In the past, CEO Elon Musk even recommended 80% daily “
This post was edited on 6/30/22 at 9:38 am
Posted on 6/30/22 at 10:29 am to TackySweater
quote:
And he doubles down.
Do you have a truck?
Posted on 6/30/22 at 11:19 am to Korkstand
quote:
Li-ion energy density has made very significant improvements over the last two decades.
Price yes but you are a clueless dolt on the other two metrics.
quote:
How close do you think today's batteries are to the theoretical limits, and how close do you think it's possible to get to those limits? How does that compare to recent and future ICE efficiency improvements?
Pretty close according to physicists and engineers that are actually experts in this field. ICE vehicles actually have tremendous room for improvement, electro-mechanical valve control can allow for level of power and fuel efficiency gains that lithium-ion battery technology can't approach.
quote:
Do you think the long-term trend in li-ion energy density per dollar will continue, stop, or reverse?
It will continue as long as the supply of raw materials can support demand. Lithium isn't an unlimited resource and it is also a major limiting factor for EV's. Lithium is, by its very nature, a bottleneck.
quote:
Why do you think what you do?
I certainly have a better STEM education than you do...
quote:
How does that compare to the long-term energy density per dollar for gasoline?
You mean when the price of gas isn't inflated by incompetent political figures? Very poorly.
quote:
It all comes down to charge times, which is an issue ~1% of the time that someone gets in a vehicle.
I love how you dishonest EV hacks make such assumptions like you have the faintest empirical evidence to support it. The average gasoline pump transfers the equivalent of 100kWh per minute in usable motive energy. Tell me if you imagine there is anything comparable for EV's on the technological horizon that isn't some pseudoscience babble or outright science fiction.
Posted on 6/30/22 at 11:27 am to Clames
quote:
I love how you dishonest EV hacks make such assumptions like you have the faintest empirical evidence to support it. The average gasoline pump transfers the equivalent of 100kWh per minute in usable motive energy. Tell me if you imagine there is anything comparable for EV's on the technological horizon that isn't some pseudoscience babble or outright science fiction.
Not gonna argue against your STEM education but oil and gas are not going to be plentiful forever or even within the next 100 or 200 years. And that is the age of our country and there will be Americans in the future. So it is time to come up with alternatives even if they don't have the energy impact that a tank of gasoline has. The era of petroleum is wonderful and is about 100 years old. But the era will pass.
I was in the energy extraction business.
Posted on 6/30/22 at 11:51 am to EA6B
quote:
Apparently repeatedly charging some of the EV batteries to 100% will degrade battery life, so it is recommended to only charge to 80%. so this would likely be the reality.
Yeah constantly wanting the battery to be full isn't a good thing. You can look at the data from people who have severe range anxiety and plug in every night and max it out. They're the leaders in degradation.
Posted on 6/30/22 at 11:55 am to Clames
quote:
Price yes but you are a clueless dolt on the other two metrics.
You're saying the energy density in the battery in your phone is the same as the ones 20 years ago?
quote:It's been a century, what are we waiting for?
ICE vehicles actually have tremendous room for improvement, electro-mechanical valve control can allow for level of power and fuel efficiency gains that lithium-ion battery technology can't approach.
quote:Nothing is unlimited, but there is far more lithium in the oceans than we would ever need. Why do you think extracting it economically is an unsolvable problem?
Lithium isn't an unlimited resource
quote:More schooling yes, but you don't seem able to continue learning on your own.
I certainly have a better STEM education than you do...
quote:
I love how you dishonest EV hacks make such assumptions like you have the faintest empirical evidence to support it.
There is mountains of data to support that claim, a simple google away.
quote:And exactly as I said, it all comes down to charge times. I don't know why you are so focused on energy density of li-ion given that it is clearly and obviously within the range of practicality today, as evidenced by the millions of EVs on the road.
The average gasoline pump transfers the equivalent of 100kWh per minute in usable motive energy. Tell me if you imagine there is anything comparable for EV's on the technological horizon that isn't some pseudoscience babble or outright science fiction.
But whatever, you just go on and keep screaming "no no, this isn't possible!" as more and more EVs keep filling the roads and the needs of millions of people, as made possible by the battery tech advances of the last 20 years.
Hey tell me, how was Tesla able to upgrade the original Roadster's battery by 40% capacity while keeping it very nearly the same weight?
Posted on 6/30/22 at 11:57 am to billjamin
So, the 230 mile range they advertise for the Lightning, is that at 100% charge or 80% charge?
Posted on 6/30/22 at 11:58 am to Diseasefreeforall
Those TFL guys are Ford Fanbaws too. Roman just about nuts when he talks about that pos Bronco.
Posted on 6/30/22 at 12:00 pm to ozktgr
quote:
The tesla semi has been spotted around Bentonville recently. Not sure how close it is to launch but seems much closer than the cyber truck
Neither will ever come to market as battery powered as touted, period.
Posted on 6/30/22 at 12:02 pm to kywildcatfanone
quote:That's at "100%" charge in quotes as the percentage scale is kind of meaningless as far as the actual battery is concerned. The percentage is just how we represent battery state via software to give us an idea of what it can do.
So, the 230 mile range they advertise for the Lightning, is that at 100% charge or 80% charge?
BMS systems don't charge the cells to the absolute physical max, nor do they allow them to discharge to zero. They are programmed to charge/discharge within a particular range that is a good trade-off between usable cycle capacity and battery pack lifetime, and then they call that range 0-100%.
Posted on 6/30/22 at 12:08 pm to kywildcatfanone
quote:
So, the 230 mile range they advertise for the Lightning, is that at 100% charge or 80% charge?
its 100% of the accessible charge. The car doesn't give you access to it's full capacity. It leaves a certain amount to power the systems.
This post was edited on 6/30/22 at 12:09 pm
Posted on 6/30/22 at 12:27 pm to JackieTreehorn
quote:
Those TFL guys are Ford Fanbaws too. Roman just about nuts when he talks about that pos Bronco.
Yes, they are. It was pretty funny watching the video they did getting the truck from Michigan back to Colorado. You could tell they were really frustrated about how long it took. That had to be killing them.
Posted on 6/30/22 at 12:38 pm to jnethe1
quote:
Do you have a truck?
No.
Had one for several years that was provided me by work though.
Posted on 6/30/22 at 12:43 pm to Korkstand
Why is it you suppose even Musk is backing off batteries and switching to hydrogen for power?
I'll give you a hint, he knows any further gains in battery tech will be incremental rather than step changes and the answer lies elsewhere, there is simply not enough energy density there for anything other than ultra lightweight cars used to transport passengers.
I'll give you a hint, he knows any further gains in battery tech will be incremental rather than step changes and the answer lies elsewhere, there is simply not enough energy density there for anything other than ultra lightweight cars used to transport passengers.
Posted on 6/30/22 at 12:55 pm to TackySweater
quote:
Had one for several years that was provided me by work though.
Same here, I own one now because of how much I loved having a truck when I had that company vehicle. I use it for everything you can imagine. Hell i even use it to make the occasional hotshot run to make some extra cash.
Posted on 6/30/22 at 12:55 pm to WhereisAtlanta
quote:You should check the date on whatever source you heard that from, I think you fell for an April Fool's joke.
Why is it you suppose even Musk is backing off batteries and switching to hydrogen for power?
quote:No doubt lithium battery advancements will be incremental, as they've always been. But if you want more energy density, then hydrogen is absolutely the wrong direction.
I'll give you a hint, he knows any further gains in battery tech will be incremental rather than step changes and the answer lies elsewhere, there is simply not enough energy density there for anything other than ultra lightweight cars used to transport passengers.
So while lithium is clearly and obviously practical for portable applications, I do think that hydrogen has a lot of potential for grid storage.
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