• zr0@lemmy.dbzer0.com
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    18 hours ago

    Warning: heating earbuds batteries to over 300F also causes fires

    Reading this tells me the author has absolutely 0 idea of how physics work and is nothing but a blogger of consumer grade equipment. People like that should refrain from trying to understand how science or scientists work.

    • JackbyDev@programming.dev
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      6 hours ago

      I think you mean they shouldn’t write authoritatively about things they don’t understand, because what you said is really gate keepy. There’s nothing wrong with learning.

      • zr0@lemmy.dbzer0.com
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        18 hours ago

        Had to laugh at your comment. Not that it matters in this case, your ear buds are not going to magically combust at just 150°C

  • fox@lemm.ee
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    24 hours ago

    This title is pretty bad, the paper focus is in designing new battery technologies not magically restoring capacity on the batteries we have today.

  • iAvicenna@lemmy.world
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    19 hours ago

    so putting batteries in the fridge wasn’t useful after all, we should put them in the oven

    • Dasus@lemmy.world
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      18 hours ago

      so I can now put my spicy pillows in the oven and tell the insurance men the internet told me to?

    • NotMyOldRedditName@lemmy.world
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      12 hours ago

      Putting my LG G Flex which had a boot loop problem due to a soldering issue on the battery solved the problem temporarily!

      Edit: oh also that was the freezer

      • topherclay@lemmy.world
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        8 hours ago

        I’ve known some old people to put their bootloops in the freezer because they think it won’t go stale as fast.

    • dzsimbo@lemm.ee
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      21 hours ago

      By not switching to Na based batteries and keeping a lid on Li mining.

      • Lka1988@lemmy.dbzer0.com
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        17 hours ago

        New ovens will only reach 280°F. But if you subscribe to LG Baking™ Plus™ plan for only $5.99*/mo, you can unlock up to 340°F for all of your essential baking needs! But wait, if you subscribe to LG Baking™ Plus™ Premium tier for an additional $8.99**/mo, you can unlock up to 425°F and a 20 minute timer!

        ^* introductory rate for new customers only, 2 year contract required, promotion ends after 1 year and increases to $24.99/mo billed annually^

        ^** promotional rate only, 5 year contract required, promotion ends after 2 years and increases to $89.99/mo, billed annually^

        ^† “essential” is defined as items that qualify as food items that require up to 325°F. upon sensing electronic items (batteries, circuit boards, and other non-food items), the contract will be terminated immediately and any funds allocated will be forfeited to LG and its subsidiaries^

          • Lka1988@lemmy.dbzer0.com
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            16 hours ago

            Glad to be of assistance. May I offer you TOTO’s Extra Platinum Plus subscription tier that helps handle non-standard bodily waste, at only $7.99/mo for 24 months…

  • RaoulDook@lemmy.world
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    23 hours ago

    Important note near the end of the article - they aren’t saying we should cook batteries really -

    “The team’s hypothesis is that the structural disorder developing inside LIBs may become a “tunable parameter” that, if tweaked using chargers at precise voltages to alter said battery composition, could be used to rejuvenate the batteries in our tech without fires.”

    This is a good old idea that goes back to the days of desulfating lead batteries with powerful shocks of high-amperage current. Might just need a special Healing Charger that applies the right voltage/current to dissolve the bad crystals in lithium-ion systems

    • Tobberone@lemm.ee
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      8 hours ago

      Well, there is some data/rumours out there, stemming from a Dutch Tesla forum, that suggests that some fast charging might be beneficial for battery longevity. This seems to corroborate that. I can’t remember the case for always fast charging, though.

    • CucumberFetish@lemm.ee
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      17 hours ago

      I remember recovering dead 18650 cells from laptop batteries and “restoring” them with a 12V modded PC PSU. Quite a few of them actually started working again and had some capacity for a few tens of additional cycles. Those cells were never left unattended in a charger and they were always only used in a device you could chuck in a moment’s notice.

      10/10 do not recommend.

      • RaoulDook@lemmy.world
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        53 minutes ago

        How did that process work? Did you just connect the +/- ends of the cell to the +/- 12v wires of the PSU and let it feed from the high-amp outputs? Imagine there’s plenty of amps on the GPU and CPU power wires

    • SharkAttak@kbin.melroy.org
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      17 hours ago

      Oh God I can already see all the questionable “Restorer Chargers” and the like from Temu that will be more likely to burn down the house…

    • drosophila@lemmy.blahaj.zone
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      19 hours ago

      With electric cars you might not even need a special charger so much as a special charging cycle. Its already the norm for cars to tell the charger what voltage and current they want, and its already the norm for cars to carefully control their battery’s temperature during charging.

      That’s not to say you’d necessarily be able to do this with just a software update, but its not too far off from the current paradigm.

      • RaoulDook@lemmy.world
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        18 hours ago

        Yeah that’s a good point. Ours uses the same refrigerant system as the AC to cool the battery, and the actual “charger” for the battery is inside the car being controlled by its software etc. The cables that plug in on the outside are technically just power wires, with the charging brains inside the car. That would be amazing if they could update the software to rejuvenate the battery once a year or something.

        • desktop_user@lemmy.blahaj.zone
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          31 minutes ago

          it would almost certainly need to be done at a fast charger, not at home unless it could do only a few cells at a time. Remember the golden rule: “Don’t set the house on fire by overloading the wiring”.

    • Balder@lemmy.world
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      22 hours ago

      In reality, this doesn’t affect the existing batteries we have, it’s just for future battery technology.

  • vollkorntomate@infosec.pub
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    1 day ago

    I hope this article is well peer-reviewed. Otherwise this reads as if some LLM came up with the idea

  • Rolivers@discuss.tchncs.de
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    1 day ago

    Sounds like a horrible idea if not carefully controlled. Perhaps up to 80 degrees in an oil bath could redissolve some of the electrolytes. I guess it could work. Anything above 100 is asking for trouble.

    • Lost_My_Mind@lemmy.world
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      1 day ago

      So you’re saying I SHOULDN’T preheat my toaster oven to 425F???

      UH-OH!!!

      brb. Gotta put out some fires.

      • Rolivers@discuss.tchncs.de
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        7 hours ago

        Well the electrolyte solution is water based so exceeding the boiling point will cause pressure buildup inside.

        Edit: hmm seems I might be generalizing too much. Not all batteries use water based solutions. My point is that you should avoid a pressure buildup inside the battery due to reaching the solvents’ boiling point.

        • isolatedscotch@discuss.tchncs.de
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          1 day ago

          wha wha what

          no, it’s an organic solvent like ethylene carbonate/propylene carbonate + some other stuff, which have a boiling point of 230+°C ( 446°F)

          heating up batteries is (mostly) fine (under controlled scenarios with known good batteries, spicy pillows can always happen with bad batches) as long as the plastic holding them together doesn’t melt

          you physically CANNOT make a lithium ion battery with water because lithium reacts with water

          from the wikipedia page

          Lithium reacts vigorously with water to form lithium hydroxide (LiOH) and hydrogen gas. Thus, a non-aqueous electrolyte is typically used, and a sealed container rigidly excludes moisture from the battery pack. The non-aqueous electrolyte is typically a mixture of organic carbonates such as ethylene carbonate and propylene carbonate containing complexes of lithium ions.[45] Ethylene carbonate is essential for making solid electrolyte interphase on the carbon anode,[46] but since it is solid at room temperature, a liquid solvent (such as propylene carbonate or diethyl carbonate) is added.

          • Rolivers@discuss.tchncs.de
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            1 day ago

            Good point. It’s highly concentrated inside a battery if not saturated. Hmm. I still wouldn’t expose them to such high temperatures.

            Perhaps a longer duration at lower temperature is safer. I might try it some day with some waste batteries and a battery tester.