• zr0@lemmy.dbzer0.com
    link
    fedilink
    English
    arrow-up
    0
    ·
    2 months 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
      link
      fedilink
      English
      arrow-up
      0
      ·
      2 months 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.

      • Liberteez@lemm.ee
        link
        fedilink
        English
        arrow-up
        0
        ·
        2 months ago

        People shouldn’t compare things to gatekeeping unless they can build a cast iron gate

      • zr0@lemmy.dbzer0.com
        link
        fedilink
        English
        arrow-up
        0
        ·
        2 months 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

        • BeardedGingerWonder@feddit.uk
          link
          fedilink
          English
          arrow-up
          0
          ·
          2 months ago

          They’ll not combust, I’d hazard a guess that air pods are made from ABS which has a glass transition temperature of 105C, so they will melt.

          • TheRealKuni@midwest.social
            link
            fedilink
            English
            arrow-up
            0
            ·
            2 months ago

            ABS which has a glass transition temperature of 105C, so they will melt.

            Well, they’ll deform. ABS won’t melt at 150°C, it’ll just become soft and flexible. But yes, it’s a bad idea for your earbuds.

  • hendrik@palaver.p3x.de
    link
    fedilink
    English
    arrow-up
    0
    ·
    edit-2
    2 months ago

    Sure. But we need to see pics, or it didn’t happen.

    The abstract doesn’t mention them re-gaining their old capacity. It only says they shrink. And something about voltage. So I have my doubts. I mean it’s nice if my spicy pillow shrinks a bit. But what does that help if it continues to stay nearly dead? And an application in products would be hard to accomplish. At that temperature, all the plastic etc is going to melt. Maybe the solder as well.

    • Imgonnatrythis@sh.itjust.works
      link
      fedilink
      English
      arrow-up
      0
      ·
      2 months ago

      Yes. If you aren’t reading any battery tech article with a huge amount of skepticism you are doing it wrong. More than any other tech sector I can think of, battery research is just absolutely plagued with low quality research that consistently gets picked up by media outlets.

      • Septimaeus@infosec.pub
        link
        fedilink
        English
        arrow-up
        0
        ·
        2 months ago

        Hmm, your right. At a guess, this field might represent the maximal combined interest of both scientific and pedestrian readership within technology research, since on the one hand energy density and storage logistics is the key limitation for a ton of desirable applications, and on the other most consumers’ experience with batteries establish them as a major convenience factor in their day-to-day.

      • drosophila@lemmy.blahaj.zone
        link
        fedilink
        English
        arrow-up
        0
        ·
        edit-2
        2 months ago

        It might be less the quality of the research and more this:

        (This comic is a bit outdated nowadays, but you get the idea).

        Except the headlines say “scientists report discovery of miraculous new battery technology using A!”.

        Also i think people don’t realize how long it takes to commercialize battery technology. I think they put them in the same mental category as computers and other electronics, where a company announces something and then its out that same year. The first lithium ion batteries were made in a lab in the 1970s. A person in 2000 could have said “I’ve been hearing about lithium ion batteries for decades now and they’ve never amounted to anything”, and they would be right, but its not because its a bunk technology or the researchers were quacks.

  • xep@fedia.io
    link
    fedilink
    arrow-up
    0
    ·
    2 months ago

    How does heat mitigate the dendrites? Also doesn’t extreme heat damage the batteries? They barely hold up under high temperatures as-is.

  • iAvicenna@lemmy.world
    link
    fedilink
    English
    arrow-up
    0
    ·
    2 months ago

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

    • NotMyOldRedditName@lemmy.world
      link
      fedilink
      English
      arrow-up
      0
      ·
      edit-2
      2 months 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
        link
        fedilink
        English
        arrow-up
        0
        ·
        2 months ago

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

    • Dasus@lemmy.world
      link
      fedilink
      English
      arrow-up
      0
      ·
      2 months ago

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

                • Cenzorrll@lemmy.world
                  link
                  fedilink
                  English
                  arrow-up
                  0
                  ·
                  2 months ago

                  Its actually the “went to church, talented white folk there”, posted by “fren”, somehow they learned random old dude was “88” which has no bearing on the story and isn’t usually something that comes up in short conversations, and the “I was like <common behavior from easily influenced person> before I did these things”

                  It gives recruitment/fishing vibes to me. If 100 people read it and 99 see ADHD and move on, but 1 person asks them how they could also feel good about themselves, boom, one more Nazi recruit. That’s how dog whistles work. You toss an innocuous thing like “88” in your story, it let’s those in the know that you’re part of the team and you’re on the job.

      • LinyosT@sopuli.xyz
        link
        fedilink
        English
        arrow-up
        0
        ·
        2 months ago

        Yeah they tricked people into believing that Apple added something that allowed users to charge their phones by microwaving them

      • Doom@ttrpg.network
        link
        fedilink
        English
        arrow-up
        0
        ·
        2 months ago

        multiple times the big one was to wrap a spoon in duct tape and microwave it or boil bleach and drip alcohol in it to make crystals.

  • x00z@lemmy.world
    link
    fedilink
    English
    arrow-up
    0
    ·
    2 months ago

    In the good ol’ days when I ran out of battery and every charger had a different stupid little connector, I often put my phone on the window still or heater to get a little bit of juice to do what I needed to do.

    I guess I am a scientist.

    • rogermiraki@lemm.ee
      link
      fedilink
      English
      arrow-up
      0
      ·
      2 months ago

      Wow, this brought back memories of me rubbing my hands against my old Nokia battery in middle school to heat it up and get a couple extra %.

      • Septimaeus@infosec.pub
        link
        fedilink
        English
        arrow-up
        0
        ·
        2 months ago

        IIRC freezing accelerates the chemical degradation of lithium ion (especially if you attempt to charge the battery at the same time) and tends to lower both the voltage and amperage of most battery chemistries, but it seems plausible that this might

        1. temporarily defeat a cell protection circuit, allowing a charging procedure to initialize, or
        2. delay a thermal failsafe cut-off of a damaged cell long enough to boot or charge a device

        Regardless, for those tuning in at home, best to keep your batteries out of the freezer, especially lithium types, unless spicy pillows are what you’re after.

        • Damage@feddit.it
          link
          fedilink
          English
          arrow-up
          0
          ·
          2 months ago

          Oh, sorry, since we were talking about the good ol’ days I thought it was implicit I wasn’t talking about lithium batteries

          • Septimaeus@infosec.pub
            link
            fedilink
            English
            arrow-up
            0
            ·
            2 months ago

            Ah! Yeah it’s been a while but I seem to recall seeing alkaline batteries in a some freezers or refrigerators sometimes when I was a kid, along with other curiosities like rolls of film. No one ever explained why.