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Gli ultimi otto messaggi ricevuti dalla Federazione
  • Studying a Battle Born LFP Battery’s Death Under Controlled Conditions

    The test setup for the Battle Born LFP cycling. (Credit: Will Prowse, YouTube)
    There has been quite a bit of news recently about the Battle Born LiFePO4 (LFP) batteries and how they are dying in droves if not outright melting their plastic enclosures. Although the subsequent autopsies show molten plastic spacers on the bus bars and discolored metal in addition to very loose wiring, it can be educational to see exactly what is happening during repeated charge-discharge cycles at a fraction of the battery’s rated current. Thus [Will Prowse] recently sacrificed another Battle Born 75 Ah LFP battery to the Engineering QA Gods.

    This time around the battery was hooked up to test equipment to fully graph out the charging and discharging voltage and current as it was put through its paces. To keep the battery as happy as possible it was charged and discharged at a mere 49A, well below its rated 100A.

    Despite this, even after a mere 14 cycles the battery’s BMS would repeatedly disconnect the battery, as recorded by the instruments. Clearly something wasn’t happy inside the battery at this point, but the decision was made to push it a little bit harder while still staying well below the rated current.

    This led to the observed failure mode where the BMS disconnects the battery so frequently that practically no current is flowing any more. Incidentally this is why you need to properly load test a battery to see whether it’s still good. In this failure mode there is still voltage on the terminals, but trying to pass any level of current leads to the rapid disconnecting by the BMS, even while as in this case the plastic spacer on the bus bar melts a little bit more.

    Despite these very rapid disconnects and observed thermal issues, the BMS never puts the battery into any kind of safe mode as other LFP batteries do, leading to the melting plastic and other issues that have now been repeatedly observed. The discoloration of the battery terminals that originally started the investigation thus appears to be a result of higher charge currents and correspondingly higher temperatures.

    Worryingly, Battle Born recently put out a statement – addressed in the video – in which they completely disavow these findings and insist that there is no issue at all with these LFP batteries. Naturally, if you still have any Battle Born LFP installed, you really want to test them properly, or ideally replace them with a less sketchy alternative until some kind of recall is issued.

    youtube.com/embed/GIE1-hIhbvM?…

    hackaday.com/2026/03/19/studyi…

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  • @evan sounds like you’re developing a Napoleon complex

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  • @grote

    I'm surprised they do not want my soul and my newborn.

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  • @rygorous @lritter i paniq'd and sold all my nvidia socks

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  • @rygorous @lritter aw balls

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  • @jon_bon same here. If I can't do that, then there's really no point in not buying an iPhone. I wonder if Samsung and other Android phone makers have been asked about how this will impact their sales?

    @grote @fdroidorg @IzzyOnDroidOrg @accrescent

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  • @grote guess I'm never buying a new phone ever again

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  • 0 Votes
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    @pocketvj I've liked Friendica for that purpose so far. Of the various Fedi options I have tried it is closest in functionality. It lets you have granular control of who can see or interact with your posts, lets you organize your contacts, can make long posts if you want of like 200k characters, supports making groups, also has a nice rss feature where you can add rss feeds as if they were a contact so they show up in your timeline and can be easily reshared.Features it has that are better than facebook are: no ads, no algorithm randomly hiding your friends posts, can be self hosted so you control the moderation (no more random post going missing for reasons you cant figure out), can organize your timeline by subject matter in addition to by who's posting (you can create and organize saved filters by keywords and hashtags and other parameters to create multiple kinds of timelines), has an option to pick from different UI styles (there's a green style one that I love, it's so peaceful and relaxing), and ability to bridge to follow and post with people other social networks too, even ones beyond ActivityPub. And my favorite: an optional anti doomscrolling feature, you can choose "pagination" instead of infinite scroll.Differences anddisadvantages: At first your timelines are quiet until you start following more people because there's no Meta force injecting "suggested posts" at you constantly. Timeline may also be more quiet than you're used to because it doesnt have addictive UI tricks to keep people scrolling 24/7 (but if you struggle with addiction this is a benefit. I regained hours of my week back). Because it's built by volunteers the default UI isnt as slick. I recommend going in the display settings and using the "bookface" display option which makes it more close to how facebook looks. It lets you control more stuff than Meta does, and some people get intimidated by having so many settings options. Because it's not an invasive privacy predator, it's slightly harder to just look up people you know, no one is required to use a real name, so I recommend joining with a few other folks you know so you can hang out together as you start off.
  • 0 Votes
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    ⚠️ サイトをアップデートしてくださいFediverse上の多くのサイトが、非常に古いバージョンのMastodonやMisskeyを使っているのをよく見かけます。中には、1年以上前のバージョンを使用しているサイトもあります。ソフトウェアのアップデートには、新機能の追加だけでなく、重要なセキュリティ修正も含まれています。あなたのサイトを安全に、そして安定して運用するためにも、常に最新バージョンを使うようにしましょう。#Mastodon #Misskey #Fediverse #ActivityPub #PixelFed #PeerTube #Loops #InfoSec #Security #InfoSecurity
  • 0 Votes
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    ⚠️ Update Your Site I've noticed that many sites on the Fediverse are running very outdated versions of Mastodon or Misskey — sometimes more than a year old.Software updates don’t just add new features — they also include important security fixes. To keep your site secure and running smoothly, make sure you're using the latest version of your platform. #Mastodon #Missykey #Fediverse #ActivityPub #PixelFed #PeerTube #Loops #InfoSec #Security #InfoSecurity
  • 0 Votes
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    @Micolcosta gente, come nella media del fediverso, simpatica. ha periodi in cui è lentone e buggato, però per condividere foto direi che va bene!