The preferred and most realistic method for safely disposing of old EVs and batteries:

 

Smoke in the water, fire in the sky ...

 

Decoding the sounds of battery formation and degradation

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New findings could provide a way to monitor batteries for sounds that could guide manufacturing, indicate remaining usable life, or flag potential safety issues.

 

Decoding the sounds of battery formation and degradation
View attachment 355998​

its amazing just how much batteries have changed since the first teslars and the future is only going to get better

 

its amazing just how much batteries have changed since the first teslars and the future is only going to get better

A lot has also to do with the arrival of the white LED, and rare-earth magnets. It's those three techs that have made the current electric transportation (and power generation) revolution possible.

Just wait until fusion is finally mastered and room temperature superconductors become a reality ... now that is a revolution I'd like to see before leaving this world.

 

Decoding the sounds of battery formation and degradation
View attachment 355998​

Hi,

I don't know about you, but I am going to run out right now and buy a good stethoscope

Seriously though I've been thinking about this for health reasons.

 

A lot has also to do with the arrival of the white LED, and rare-earth magnets. It's those three techs that have made the current electric transportation (and power generation) revolution possible.

Just wait until fusion is finally mastered and room temperature superconductors become a reality ... now that is a revolution I'd like to see before leaving this world.

It's only 10 years away from demonstration, and maybe 100 after that for practical, useful engineering.

 

 

https://www.datacenterdynamics.com/...-for-good-after-south-korea-data-center-fire/
858TB of government data may be lost for good after South Korea data center fire
Destroyed drive wasn't backed up, officials say

Meanwhile, a government worker overseeing efforts to restore the data center has died after jumping from a building.
As reported by local media outlet The Dong-A Ilbo, the 56-year-old man was found in cardiac arrest near the central building at the government complex in Sejong City at 10.50am on Friday, October 3. He was taken to hospital, and died shortly afterwards.
The man was a senior officer in the Digital Government Innovation Office and had been overseeing work on the data center network. His mobile phone was found in the smoking area on the 15th floor of the government building.

https://www.chosun.com/english/national-en/2025/10/02/FPWGFSXMLNCFPIEGWKZF3BOQ3M/

The Ministry of Personnel Management, where all affiliated officials use the G-Drive, is particularly affected. A source from the Ministry of Personnel Management said, “It’s daunting as eight years’ worth of work materials have completely disappeared.”
...
It provided 30GB, gigabytes, per public official. At the time, the Ministry of the Interior and Safety also issued guidelines to each ministry stating, “All work materials should not be stored on office PCs but should be stored on the G-Drive.”

G as in GONE. What idiots, have they never heard of Petabyte tape backup systems?
https://magstor.com/products/magsto...75749&pr_ref_pid=8167066861733&pr_seq=uniform
Even if it was 858PB, backup is possible. TS4500 offers 2.63EB (exabytes)
https://www.ibm.com/products/ts4500

One of these guys with redundant fiber links to off-site backup centers is all they needed.

"If you think having a backup is too expensive, try not having one."

 

“All work materials should not be stored on office PCs but should be stored on the G-Drive.”

That's the way every corporate IT department works, and I never once complied. Oh I'd use the prescribed drive, but ALWAYS had a personal backup. I had projects and reports spanning decades and there was no damn way I was risking a life's work on the IT buffoons.

 

“All work materials should not be stored on office PCs but should be stored on the G-Drive.”

That's the way every corporate IT department works, and I never once complied. Oh I'd use the prescribed drive, but ALWAYS had a personal backup. I had projects and reports spanning decades and there was no damn way I was risking a life's work on the IT buffoons.

​

 

 

They are horrible for RE storage.

 

They are horrible for RE storage.

RE ? Renewable energy? Why?

 

RE ? Renewable energy? Why?

End to end efficiency at low SOC is as bad or worst than Lead Acid, that's OK if you have lots of available energy to burn as wasted heat in your battery bank. LFP is 95 to 99% across the range. Linear voltage changes with SOC vs flat with LFP means energy tracking algorithms have lots of secondary corrections vs pure energy in/out as with LFP. And it's expensive vs LFP for what you get, today. You also need a special (vs LFP with drop in compatibility with LA), wide voltage range, sodium battery inverter to utilize the full energy range.

https://diysolarforum.com/threads/my-first-sodium-ion-battery.114938/

My general experience is that sodium cells are generally rated for higher C rates.
The problem is that you just cannot escape the voltage curve of the cells. The layered oxide based sodium cells have a roughly 2V dead to 4V full charge range. The poly-anion cells are even worse being roughly 1.5v to 4v. Add in a roughly 1:1 linear SoC to Voltage curve and they are just hard to use in traditional electronics.

A 15S poly-anion sodium battery would have a 22.5-60v operating range compared to 16s LFP which would be 40-58.4v when pushed to the edge.

 

Interesting. Voltage dropping with SoC is like the problem of using a capacitor as a battery.

 

we've been using sodium batteries for decades.. in the military..
they run at a few hundred C though. but have amazing shelf life and power density.
they typical have a squib or such to start them.
very popular in things like missiles,

 

 

While watching these videos, it's helpful to remember that the energy density of gasoline is 12,200 Wh/kg. And recharge time is in seconds.

 

While watching these videos, it's helpful to remember that the energy density of gasoline is 12,200 Wh/kg. And recharge time is in seconds.

And the AI data centers are using jet engines for electric power.

https://spectrum.ieee.org/ai-data-centers