this post was submitted on 06 Jun 2026
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[–] comador@lemmy.world 73 points 3 days ago* (last edited 3 days ago) (4 children)

Prove it or shut up.

CATL has in the past claimed, unsuccessfully:

  • $10 per kilowatt-hour batteries
  • 1-Million-Mile (1.8-million-kilometer) batteries
  • that CATL doesn't steal end user data without notice
  • that CATL doesn't use forced labor
  • that CATL doesn't steal international patents

CATL is a shit company. Period.

[–] MalReynolds@slrpnk.net 17 points 3 days ago (1 children)

Clickbait title. Goddard's law applies to the implied question. Relevant bits...

The theoretical energy density limit for lithium-air systems is 12,000 Wh/kg. Gasoline sits at roughly 13,000 Wh/kg, and modern laboratory battery prototypes have reached more than 1,200 Wh/kg. That last number is four times higher than the 250 to 270 Wh/kg capacity found in mainstream electric cars today.

It's a pretty interesting tech, regardless of CATL.

[–] Krelis_@sh.itjust.works 11 points 2 days ago

To add, modern engines can utilise about 3000 Wh/kg from gasoline

[–] zergtoshi@lemmy.world 12 points 3 days ago (1 children)

Do you have links for these claims?
Not saying I don't believe it, I just want to read about it myself.
Btw. I think you used sea mile as reference when converting miles into kilomeres. 1 million milles would be more like 1.6 million kilometres.

[–] sudoMakeUser@sh.itjust.works -1 points 2 days ago (1 children)

No, they batteries last longer when not in the US or UK. Something about the people there cause some batteries to kill themselves prematurely which skews the numbers a little bit.

[–] isVeryLoud@lemmy.ca 2 points 1 day ago
[–] Ferrous@lemmy.ml 4 points 2 days ago

1-Million-Mile (1.8-million-kilometer) batteries

After 2 million kilometers (1.25 million miles), CATL’s EV batteries retained about 400 km (250 mi) of range. Competitor cells, on the other hand, retained considerably less, at around 350 km (218 mi) and less.

The data is based on 12 electric vehicles, 100 sample batteries, and real-world applications across four major cities in China. You can see in the chart from Morgan Stanley Research that Models 11 and 12, which use CATL batteries, exhibit considerably slower degradation than the other suppliers.

https://electrek.co/2026/01/06/catl-ev-batteries-significantly-outperform-rivals-degradation/

What leads you to believe that CATL has been unsuccessful at achieving a 1 million mile battery?

[–] ImgurRefugee114@reddthat.com 6 points 3 days ago (1 children)

A one million mile battery is easy... The sun is a battery if you think about it wrong.

[–] MatSeFi@lemmy.liebeleu.de 5 points 3 days ago* (last edited 3 days ago)

Not sure about the mailage of the voyager probes (wikipedia states a distance from earth of 16billion mi) an they also have batteries with them. Does this count?🤔

[–] Krelis_@sh.itjust.works 8 points 3 days ago (2 children)

Is energy density based on energy per volume or per mass?

[–] EndlessNightmare@reddthat.com 9 points 3 days ago (1 children)

Energy density = energy per volume

Specific energy = energy per mass

[–] whyNotSquirrel@sh.itjust.works 4 points 3 days ago* (last edited 3 days ago) (1 children)

why does the thumbnail show Wh/kg ~~kg/W~~?

[–] party_planet@lemmy.world 1 points 3 days ago

watts = joules per second, so watts x hours is a measure of energy

[–] SharkAttak@kbin.melroy.org 3 points 2 days ago (1 children)

Is it an iron-feathers battery?

[–] blackjam_alex@lemmy.world 6 points 2 days ago (1 children)
[–] SharkAttak@kbin.melroy.org 3 points 2 days ago

"What weighs more, a Kg of iron or a Kg of feathers?"