ButchC · HackerTrans

Hybrids don't really need anymore focus than they have had for multiple decades now. It's a fully mature technology that isn't going to advance much in performance, efficiency, or cost no mater how much attention it gets. If it fits your needs great, buy one, if not but whatever does.

ButchC

4년 전discuss

You mean like how companies have always decided who gets gasoline, when and for how much anyway?

ButchC

4년 전discuss

Why bother asking these types anymore? It's just going to the same debunked propaganda over and over.

ButchC

4년 전discuss

That is a silly statement, as absurd as saying electricity itself is a dead end. The fact of the matter is EVs and electrified vehicles in general are the best answer we've got for the future of consumer mobility. Nothing else really competes long term.

ButchC

4년 전discuss

Okay some portion of that may be Twitter but what does Twitter have to do with Lucid being down -8.4%, Rivian being down -9.3%, QuantumScape being down -8.6%, and Carvana being down -9.4%?

ButchC

4년 전discuss

Imagine you you had a magic button that suddenly increased demand for a volatile security any time you pressed it. That would be a fairly valuable thing for some people.

ButchC

4년 전discuss

"6/9 of trucking costs is diesel. Like 2/9 is labor, with maintenance, tolls, and other misc. rounding out the last 1/9."

FTFY. Why would you used different denominators, this isn't an algebra test, it makes communication harder for no reason.

ButchC

4년 전discuss

None of that makes any sense. What are you using as the basis for those statements? I feel like I'm hearing doublespeak where down is up.

NiMH infamously has HORRIBLE self discharge performance in comparison to pretty much any lithium chemistry.

Multiple lithium chemistries outperform NiMH in low temperature performance. Even LFP which is generally not recommended for unregulated conditions below about -10 degree will function at reduced capacity at -40c. Nearly all chemistries, except maybe LMO, have superior high temperature performance.

I also don't understand what you mean by more forgiving chemistry?

Production yields? Modern lithium cell plants can easily do 80%+

Tolerance to production variations? Multiple lithium chemistries are just as tolerant.

Fire/puncture resistance? Multiple lithium chemistries areas as safe or safer

Voltaic efficiency/Energy Efficiency/etc? Lithium chemistries are SIGNIFICANTLY better

Memory effect or reduced voltage? NIMH yes while lithium none

Cycle life? Once again nearly every lithium chemistry is superior. Some even still have acceptable performance after an order of magnitude more cycles than a NiMH cell.

At this point there is literally no reason someone would chose NiMH for a ground up design in a consumer vehicle other than cost ....seriously like none.

Also yes Prius reliability is pretty good, but the reliability and performance of the NiMH battery packs were not even in the range for what would be acceptable in a commercially successful EV.

At the time when commercial lithium batteries were $1000-$5000/kwh hour sure they were a fantastic compromise, but it's not even close now.

If Tesla had started with NiMH they would have been dead meat right out of the gate. Gone out of business in a couple years at most.

ButchC

4년 전discuss

All those things are true when comparing NiMH to NiCd but definitely not compared to lithium batteries. There's not a single metric for which you can't find a superior suitable lithium chemistry. Except for one: $Cost

Just Toyota doing Toyota things.

Also I would strongly disagree on the Prius comment. A lot of "HV battery fault" cars out there back in the day, refurbing them was a pretty good business for a while. The NiMH pack in the Prius was the basis for so many slack jawed comments "EVs will never work! You're just going to have to replace the battery every 5 years!"

ButchC

4년 전discuss

"Panasonic Corp (6752.T) said on Monday it will begin mass production of a new lithium-ion battery for Tesla Inc (TSLA.O) before the end of March 2024 at a plant in Japan."

Was this detail added by the article writer? Unless something has changed, Tesla cells are produced at the Tesla factories. These 4680 production lines are for Panasonic to sell to customers.

Actual press release: https://news.panasonic.com/global/press/data/2022/02/en22022...