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Mistress Rose
Joined: 21 Jul 2011
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jema
Downsizer Moderator
Joined: 28 Oct 2004
Posts: 28361
Location: escaped from Swindon
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 Posted: Sun Jun 01, 25 2:34 pm Post subject: |
 
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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 31st 2025, An Indian Sodium Ion battery
No mention of energy density but a 3000 cycle life. Cycle life seems a theme this week. We have a Lithium Metal high energy density battery with under 500 cycles and CATL with a decent energy density sodium battery boasting 10,000 cycles.
In a car the difference is meaningless 3000 cycles is the better part of a million miles.
In a grid battery it's the difference between an 8 year lifespan and a 25 year lifespan.
On the face of it, the Indian Battery has a hard road to production.
https://energy.economictimes.indiatimes.com/news/power/indias-superfast-sodium-ion-battery-charges-80-in-six-minutes-could-cut-lithium-imports/121352254
May 30th 2025, CATL makes Lithium Metal breakthrough
The battery has 500wh/kg energy density but a life cycle given as 483 cycles which in a car with 300 miles of range would only give a sub 150,000 mile lifetime.
Perhaps it will end up in aviation?
https://insideevs.com/news/761074/catl-lithium-metal-battery-breakthrough/
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 |
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jema
Downsizer Moderator
Joined: 28 Oct 2004
Posts: 28361
Location: escaped from Swindon
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| Posted: Sun Jun 22, 25 10:26 am Post subject: |
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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.
June 21st 2025, BYD testing 400wh/kg solid state batteries in the Seal
Their claim is that when these batteries hit mass production in 2027 they won't be much more expensive than current batteries and that there would be price parity by 2040. I've practically lost count of credible solid-state claims at this point and BYD in particular has this not in a lab, but in cars making sure no real world issues crop up.
The range claim here is 1875km on 400wh/kg which should be contrasted with the claim below of 3000km on 500wh/kg. It doesn't take a mathematics genius to take both numbers as silly marketing claims.
Better to just realise these energy densities mean EVs will have enough range and be lighter than ICE cars. It certainly tells you what will happen to PHEV.
https://www.autoevolution.com/news/byd-tests-solid-state-battery-that-can-add-900-miles-of-range-in-12-minutes-of-charging-253265.html
June 20th 2025, another fast charging claim
https://www.topgear.com/car-news/electric/a-company-developing-a-fancy-electrolyte-charge-ev-batteries-four-times-faster
June 19th 2024, Huawei enters solid state race
Even with the claimed possible 500wh/kg energy density that doesn't sensibly equate to the 3000km clickbait headline. The chemistry is Lithium Sulfide which has traditionally been low cycle life a problem they claim to have solved, though no details are given on cycle life, so one can only guess it's still nothing great.
There is no time scale given and that might normally be a blocker on me including the news, however Huawei is a serious played and people should be aware they are in the solid-state race.
https://carnewschina.com/2025/06/18/huaweis-3000km-solid-state-battery-patent-with-5-minute-charge-ignites-industry-race/
June 18th 2025, Samsung promises cheaper solid state batteries in 2027
The article mentions 500wh/kg energy density and a cheaper production method. They say their dry lining method can also be applied to make cheaper conventional batteries.
Not withstanding other complexities to production, 500wh/kg would mean at an approximation about 33% of the raw materials for a similar range car. Think of that in relation to articles suggesting some countries might have internal lithium shortages.
The other implication is that EVs could have ranges far exceeding today's EVs bringing into focus again what range is really sufficient?
I have a current case a round trip to somewhere with no destination charging through stretches of UK motorways with no well placed service stations. There's a gap of 75 miles on a 118 mile trip I take with the last service station 43 miles into the journey. Allowing for motorway speeds I might want 350 miles range to really be happy.
https://www.notebookcheck.net/Samsung-dry-cell-breakthrough-set-to-bring-cheaper-solid-state-batteries.1038088.0.html
June 17th 2024, Nissan plans solid state batteries for 2028
These batteries are an in house development which seems quite remarkable.
https://www.autoexpress.co.uk/nissan/367112/nissan-deliver-solid-state-battery-tech-production-car-2028
June 17th 2025, sodium home battery released.
I don't usually cover products, but this is a portent of the future. Long cycle life, -10c operation and cheaper than lithium. Much more suitable for home use than lithium.
https://www.ess-news.com/2025/06/16/italian-startup-releases-9-8-kwh-sodium-ion-battery-for-residential-applications/
June 16th 2025, stable Zinc iodine batteries
These batteries are low energy density, but have potential for grid storage. There's been some utterly unsubstantiated claims recently of forthcoming Lithium shortages. The claims seem pretty bogus but regardless the rise of non lithium batteries will have a massive effect. There's little need for grid and household batteries to use lithium.
https://www.adelaide.edu.au/newsroom/news/list/2025/06/13/zinc-iodine-battery-with-outstanding-stability-now-a-reality
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/ |
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dpack
Joined: 02 Jul 2005
Posts: 44445
Location: yes
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| Posted: Sun Jun 22, 25 11:15 am Post subject: |
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ummm lots of folk trying to go in the right direction
a few will, but then it might get betamax vs VHS
or worse still such as : 27 types of voltage , AC or DC, phase rates and plugs in london when domestic electric started 
it was not until the grid was up that you could move house and take your appliances with you
with vehicles away from home charging may be an issue with different kit specs, spares etc definitely would be, one type of windscreen wiper motor would almost certainly not fit assorted other cars, even the size of the wires might be a repair issue in terms of "have you got a wire, my @@@@@@wire is broken?"
apart from that, and the above mentioned bragging re their soon to be products, battery tech is progressing faster than expected, splendid |
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gz
Joined: 23 Jan 2009
Posts: 9275
Location: Ayrshire, Scotland
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dpack
Joined: 02 Jul 2005
Posts: 44445
Location: yes
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jema
Downsizer Moderator
Joined: 28 Oct 2004
Posts: 28361
Location: escaped from Swindon
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gz
Joined: 23 Jan 2009
Posts: 9275
Location: Ayrshire, Scotland
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gz
Joined: 23 Jan 2009
Posts: 9275
Location: Ayrshire, Scotland
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Slim
Joined: 05 Mar 2006
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Location: New England (In the US of A)
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Mistress Rose
Joined: 21 Jul 2011
Posts: 16527
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jema
Downsizer Moderator
Joined: 28 Oct 2004
Posts: 28361
Location: escaped from Swindon
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dpack
Joined: 02 Jul 2005
Posts: 44445
Location: yes
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jema
Downsizer Moderator
Joined: 28 Oct 2004
Posts: 28361
Location: escaped from Swindon
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jema
Downsizer Moderator
Joined: 28 Oct 2004
Posts: 28361
Location: escaped from Swindon
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