Admin on the slrpnk.net Lemmy instance.

He/Him or what ever you feel like.

XMPP: povoq@slrpnk.net

Lemmy alt: @kris@feddit.org

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  • 369 Posts
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Joined 4 years ago
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Cake day: September 19th, 2022

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  • poVoq@slrpnk.nettoSelfhosted@lemmy.world•DC UPS for router?
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    14 days ago

    Right AC. Was a typo, corrected now.

    As for running nominally 12V stuff directly of a battery… you got lucky with your router then. I had the same idea with various mini PCs and ARM SBCs, and the majority absolutely should not be run directly off a battery where the voltage fluctuates so much. And it gets even worse when you try to solar charge the batteries.




  • poVoq@slrpnk.nettoSelfhosted@lemmy.world•DC UPS for router?
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    15 days ago

    When charging, 12V lead acid batteries have significant higher voltages (>14V), so you basically need a DC to DC converter to make sure you get a stable 12V supply. Some (typically industrial/automotive grade) systems have that built into their internal power supply and can work directly off a 12V battery, but with consumer routers I would assume that not to be the case.


  • poVoq@slrpnk.nettoSelfhosted@lemmy.world•DC UPS for router?
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    14 days ago

    While there is DC AC power the battery in a UPS isn’t used. It’s not a constant AC-DC-AC conversion, that conversion only happens when there is a power outage.

    The problem is that lead-acid batteries are a really shitty technology with high self discharge rates and short overall life span (their only advantage is high burst capacity that’s good for starting motors).

    I would look for 12V LiFePO4 batteries in a standard lead-acid form factor that are meant as drop in replacements. Those are somewhat more expensive (like 2-3x the price) but will likely last a quarter century or more.

    I am currently using an interim solution where my solar inverter has an seperate emergeny power outlet that works even when power is cut. Sadly it doesn’t switch to battery fast enough (like half a second delay 😓) for it to work as a UPS directly. But in combination with some old regular UPS that have spend batteries that only last a few minutes it works ok. But yeah, not the most efficient option conversion wise, but solar power is free 🤷


  • They are right-wing “free speech” / 4chan chuds, that tollerated until very recently an even worse dev that is trolling a lot as a TERF, currently works for Truth Social (Trump’s MAGA cesspit) and also made the Rebased fork after being finally kicked out.

    The codebase is also a mess full of half-baked ideas. A few years ago the more reasonable people forked off Pleroma into Akkoma and spend significant time cleaning up the codebase.