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Mistress Rose

Joined: 21 Jul 2011
Posts: 16508

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: 44399
Location: yes

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

jema
Downsizer Moderator

Joined: 28 Oct 2004
Posts: 28344
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/

Slim

Joined: 05 Mar 2006
Posts: 6709
Location: New England (In the US of A)

Posted: Sat Apr 26, 25 11:09 am Post subject:
Not looking particularly long range, but a small startup is finally advertising an EV truck that makes sense to me. $25,000 base model. Similar to model T, you can get it in any color, as long as it's gray. US rebate incentive would knock $7.5 off of that price if it can survive Trump Not sure how much more, but there will apparently be a range extender add on battery available

dpack

Joined: 02 Jul 2005
Posts: 44399
Location: yes

Posted: Sat Apr 26, 25 12:09 pm Post subject:

not a truck , a panel van

all electric ford transit, good enough for dhl round here, multiple body configurations, clean quiet and dhl will have done the maths on ev vs fossil

old transits were, or could be made, quite off road depending on type

the old low cc ones were better with a "used" but powerful sierra engine dropped in the hole(they fitted easily), better torque for heavy loads in traffic and 30% lower fuel use for oozingly gently driven long runs

this one is a bit silly but the pickup bit is rather good

i recon battery and motor upgrades are probably wise for a work vehicle or rough riding through the boonies for leisure and getting home again

Ty Gwyn

Joined: 22 Sep 2010
Posts: 4632
Location: Lampeter

Posted: Sat Apr 26, 25 8:59 pm Post subject:
Presume you mean the 2.3 Peugeot engine in the Sierra,economical and a good work horse.

dpack

Joined: 02 Jul 2005
Posts: 44399
Location: yes

Posted: Sun Apr 27, 25 9:11 am Post subject:
i lost track of rat rod details ages ago one my chum used might have been a cossy upgrade, it did have fancy bits around the lump that one was a bit daft 2.3 pug seems reasonable for day van

jema
Downsizer Moderator

Joined: 28 Oct 2004
Posts: 28344
Location: escaped from Swindon

Posted: Sun Apr 27, 25 3:51 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 25th 2025, Narada power launches solid state battery for grid storage
The energy density is LFP equivalent so this in the holy grail type of solid-state battery people want to see happen.
https://www.ess-news.com/2025/04/25/narada-power-launches-783-ah-cell-8-3-mwh-solid-state-battery/
April 24th 2025, Ford now has pilot production line for LMR batteries
These Lithium Manganese Rich batteries have better energy density to LFP batteries and are promised to be significantly cheaper than current mid-nickel batteries.
https://www.carscoops.com/2025/04/ford-develops-new-lmr-battery-for-future-evs/
April 24th 2025, Stellantis goes through production â€œhellâ€ with semi solid state
Their demonstration 375w/kg batteries were up to 30x more expensive to produce.
https://insideevs.com/news/757542/stellantis-factorial-solid-state-ev-battery/
April 23rd 2025, advances in synthetic graphene production
Graphene batteries one of those holy grail products promising everything whilst remaining more out of reach than solid-state batteries. I recall getting very fed up with one character spamming EV threads with the wonders of graphene batteries for what seemed like years. However it is occasionally good to realise that we are far from reaching the potential limits of batteries.

https://www.kth.se/en/om/nyheter/centrala-nyheter/for-graphene-sources-a-potential-green-alternative-to-mining-1.1388120
April 21st 2025, CATL to launch Sodium batteries at LFP energy densities
The new Naxtra brand will have 175whk energy density and should become cheaper than LFP batteries .
https://www.reuters.com/technology/chinese-battery-maker-catl-launches-second-generation-fast-charging-battery-2025-04-21/

jema
Downsizer Moderator

Joined: 28 Oct 2004
Posts: 28344
Location: escaped from Swindon

Posted: Sun May 04, 25 4:04 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.

May 3rd 2025, Batteries prices dropping as demand grows
Contains an acknowledgement that the $100 kwh mark happened in 2024. This was meant to be ICE/EV price parity point, but allowing for inflation that number is by my reckoning at least $120.
https://tech.yahoo.com/transportation/articles/battery-prices-plunging-around-world-113036549.html
May 1st 2025, A new shape for energy storage!
This is a bit of a laboratory thing and I usually avoid stuff far away from production, but this strikes me as relevant.
https://news.rice.edu/news/2025/new-shape-energy-storage-cone-and-disc-carbon-structures-offer-new-pathways-sodium-ion
April 28th 2025, Improvement to battery recycling
Recycling isn't some magical process, it to has environmental impact.
https://www.thecooldown.com/green-tech/lithium-battery-recycling-method-improvement/

dpack

Joined: 02 Jul 2005
Posts: 44399
Location: yes

Posted: Wed May 14, 25 2:25 pm Post subject:
i'd rather have an old landy( with my choice of lump and metalwork) or cossack and chariot for a mad max vehicle those seriously off road bikes might be a place to start an electric or "multi fuel" pockylips vehicle

Mistress Rose

Joined: 21 Jul 2011
Posts: 16508

Posted: Thu May 15, 25 6:14 am Post subject:
Old Landy's are good for a lot of things, but not comfortable and not fuel efficient either. Otherwise, will go anywhere and repairable. Our tractors are all old; partly as they were affordable and the first one we got, the little one, because we didn't want electronics in it. Has great advantages to be as simple as possible.

jema
Downsizer Moderator

Joined: 28 Oct 2004
Posts: 28344
Location: escaped from Swindon

Posted: Sun May 18, 25 2:56 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.

May 16th 2025, Advances in silicon electrodes
Claims of stable high energy density silicon electrodes. Silicon has suffered from expansion issues preventing their energy potential being practically realised.
https://postech.ac.kr/eng/research/research_results.do?mode=view&articleNo=19085
May 14th 2025, GM says LMR batteries coming in 2028
The claim is that Lithium Manganese Rich batteries offer 33% energy density gains over LFP at comparable cost.
Let's take that at face value and for the sake of argument call that $60kwh. That would make a 60kwh battery $3600. Add on the effects of weight reduction and that's 300 miles of range in a car where the battery cost really is no longer much of an issue.

https://insideevs.com/news/759374/gm-lmr-battery-chemistry-ev-trucks-suvs/

jema
Downsizer Moderator

Joined: 28 Oct 2004
Posts: 28344
Location: escaped from Swindon

Posted: Sun May 25, 25 2:50 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.

May 22nd 2025, CATL confirms 175wh/kg Naxtra sodium EV battery
I've previously covered this, but this is CATL own press release citing no cold weather degradation, 400km range and 10,000 cycle life time.
175wh/kg beats many LFP batteries currently on the road.

https://www.catl.com/en/news/6401.html

dpack

Joined: 02 Jul 2005
Posts: 44399
Location: yes

Posted: Sun May 25, 25 3:04 pm Post subject:
4 million Km battery life would need a pretty strong car to use up in an economic way metal fatigue of the frame might be an issue before 4 mil Km even if moving bits are easily replaced and rust is not an issue once the car is worn out the battery could easily have a second career as immobile storage

dpack

Joined: 02 Jul 2005
Posts: 44399
Location: yes

Posted: Thu May 29, 25 10:12 am Post subject:

the wild and windy moor

if ev is going to work more leccy is required
sometimes nimbys are right, often they are more bothered about falsehoods and house prices

the "fire risk" from a grid size battery bank is far less than the fire risk from too much dry weather or catastrophic climate change upon food supplies

ps the east coast pylon nimbys seem unconcerned that even a few meters SLR will put much of their infrastructure and villages into saltmarsh or shallow sea
they do elect torykippers/reform so not really a surprise they are ignorant and hard of thinking as well as selfishly short planners

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