this post was submitted on 30 Nov 2025
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While lithium extraction technologies generally focus on ways to get the essential metal out of the ground, there's another source to mine: existing batteries that no longer work. A new technique could now make that process economically viable.

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[–] AI_toothbrush@lemmy.zip 37 points 2 days ago (7 children)

Idk where they got the picture from but 4300mah in aa size would be insane. Thats like 2.5 times as much capacity as how much the best ones provide currently.

[–] rizzothesmall@sh.itjust.works 42 points 2 days ago (2 children)

Was gonna say maybe they're 18650s but it Def says AA on them. I'm gonna go with it's a made up / AI-generated image

[–] AI_toothbrush@lemmy.zip 5 points 2 days ago

Yeah probably tho i kinda wish they existed lol

[–] cmnybo@discuss.tchncs.de 4 points 2 days ago

They would have to be 21700 cells to hold 4.3AH. 18650 cells top out around 3.6AH. While it is possible to make higher capacity cells, there are some major downsides with doing so.

[–] BCOVertigo@lemmy.world 18 points 2 days ago

It's just a stock photo used since at least 2017 that appears to have had the 4300mah text added on more recently.

[–] unknownuserunknownlocation@kbin.earth 11 points 2 days ago (1 children)

Looks like AI to me. Also, those would most likely be NiMH batteries, which AFAIK don't have any lithium.

[–] AI_toothbrush@lemmy.zip 2 points 2 days ago

The way its packaged with the indent at the top would make it a lithium cell but yeah its fake anyways

[–] fuckwit_mcbumcrumble@lemmy.dbzer0.com 5 points 2 days ago (1 children)

Maybe they’re just ultra fire batteries?

[–] gkaklas@lemmy.zip 2 points 1 day ago

🩵

One time I went to a local shop with cheap electronics etc, and they sold... UItraFire batteries, with an i instead of an l! Double fake 😄

[–] Septimaeus@infosec.pub 3 points 2 days ago

In case anyone’s curious: it is likely a cell wrapper misprint/typo.

4300mWh AA lithium ion cells are a standard extended-life chemistry. 2866 mAh is their actual rated capacity.

[–] BlackVenom@lemmy.world 2 points 2 days ago (1 children)

There are plenty of cells that size over 3000mah.

[–] AI_toothbrush@lemmy.zip 4 points 2 days ago (1 children)

The highest capacity one that is properly commercially available is the vapcell f15 which is known for quality control issues. Its advertised capacity is 1500mah but multiple sources measured it at an actual usable capacity of 1250-1350.

[–] BlackVenom@lemmy.world 2 points 1 day ago

14500s are fairly uncommon.... I assumed these were the much more common 18650.

It’s probably an AI gen image.