Thread for new battery breakthrough PR releases

ak136 said:
I wouldnt say there are high energy density cells that have 5C, more like max 2-3C, looking at the data on nkon.nl for 21700 cell format
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What high performance EV has limited acceleration because of pack output instead of traction? Tesla doesn't seem to have any problem getting enough power out of their NMC packs 580kW from their 100kWh pack is more than 5C.
 
JRP3 said:
What high performance EV has limited acceleration because of pack output instead of traction? Tesla doesn't seem to have any problem getting enough power out of their NMC packs 580kW from their 100kWh pack is more than 5C.
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Getting power out of packs usually isn't the bottleneck.
Also, those Tesla cars are using active heating to increase power density of those cells, not exaclty fair.

The real problem is fast charging and if you can increase cell capabilities, that faster charging is always better.
 
BlueSwordM said:
The real problem is fast charging and if you can increase cell capabilities, that faster charging is always better.
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Depends, if I have more range and don't need to stop and charge at all then the range is better than fast charging. Also I don't see how temperature management is cheating, and my Model 3 doesn't heat the pack for acceleration and the traction control still has to kick in under full acceleration to keep the tires hooked up.

Back to my initial point, a hybrid pack is still going to charge/discharge at the average speed of the two chemistries and I'd rather have the larger more energy dense pack. Give me a 400-500 mile range pack and I don't really care how long it takes to charge, I need a break to pee and have some food anyway.
 
Welion and Qingtao now selling semi-solid batteries a la cart on Taobao Alibaba... probably on AliExpress soon.

These are NCM chemistry. Roughly 370wh/kg.

So far the Qingtaos are more reliable, but Welion is priced more competitively.

I've got a build ongoing here if anyone wants to follow.

Weixin Image_20250506172133.jpg
 
JRP3 said:
Is there third party test data on these cells?
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I found some testing in this video here. It's made by a Chinese ev tech news network.
Their process appears to be pretty scientific, but as always with Chinese media take with a grain of salt.


I'm working and living in China right now. The retail pages on Taobao (chinese amazon) for the Welion has a ton of repeat buyers and good reviews so far.
 
JRP3 said:
I was looking for capacity and cycle life testing of the 370Wh/kg cells.
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1000032679.jpg

On the description it says 3000 which I'm gonna call BS.

Capacity is indeed 111ah tested. I'm making a build with it. So far it looks like buyers have been pretty happy with them.

For 1000 cycles it should be just fine I think. Purely conjecture.
 
kagemushablues said:
Welion and Qingtao now selling semi-solid batteries a la cart on Taobao Alibaba... probably on AliExpress soon.
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Can you provide link on alibaba to some seller who can sell these cells in sample amount like 2 pcs and send them in Europe?

Do you know if they also produce smaller cells with this technology, say up to 50 Ah?
 
Pajda said:
Can you provide link on alibaba to some seller who can sell these cells in sample amount like 2 pcs and send them in Europe?

Do you know if they also produce smaller cells with this technology, say up to 50 Ah?
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I want to say reach out to Qingtao or Welion (the battery developers themselve) directly if shipping overseas. The AliExpress sellers sometimes shop B-rated cells and super dangerous. Here in China, at least there is traceability and I can get it insured in case anything goes wrong.

Welion already has a presence in Detroit, USA. It's likely they can point you to a distributor for EU. I know this isn't what you asked for but hope it helps.
 
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