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Mistress Rose

Joined: 21 Jul 2011
Posts: 16293

Posted: Tue Apr 15, 25 7:51 am Post subject:
Batteries have been the weak link in the solar renewable chain for some time. Claims, particularly by US companies are frequently rather wishful rather than actual, but batteries are improving a great deal and relatively fast.

dpack

Joined: 02 Jul 2005
Posts: 43892
Location: yes

Posted: Tue Apr 15, 25 11:44 am Post subject:
thanks

jema
Downsizer Moderator

Joined: 28 Oct 2004
Posts: 28270
Location: escaped from Swindon

Posted: Sun Apr 20, 25 2:36 pm Post subject:

Battery claims
The following link is to the complete list of claims I have been compiling.

https://martindavidwalker.blogspot.com/2024/09/battery-claims.html

The new claims in the last week are as follows.
April 19th 2025, Nakai university achieve safer high energy density 18650 batteries
In a process claimed to be compatible with existing manufacturing, they say they have achieved between 250 - 283wh/kg in a virtually non inflammable lithium metal battery.
The batteries also claim a long life cycle.
https://www.eurekalert.org/news-releases/1080843
April 18th 2025, General Motors battery production overtakes Tesla
GM is going all in on batteries in partnership with LG, though reported costs are still in excess of $100 kwh, I have seen much lower Chinese costs. It really begs the question what does that cost really mean? These are massive investments and as such there's a big difference between the true cost and the so called marginal cost of each cell coming off a production line.
There's some talk about the next stage being space and weight saving prismatic batteries, but perhaps a takeaway is that in house production of any reasonably competitive battery is probably good enough.

https://insideevs.com/news/756701/general-motors-ev-battery-production-overtakes-tesla/

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