I took a look around and a lot of comments mentioned to get one that uses ‘LiFePO4 Batteries’, and that seemed like a reasonable requirement.

They’re supposed to have a longer life span, be safer, light weight, and better charge/discharge efficiency which is in line with what I’d be looking for.

Some brands/models that I saw recommended:

  • BLUETTI came up in more recent posts
  • Ecoflow (specifically the RIVER 2) came up a lot
  • Anker was suggested a few times, but the comments weren’t that detailed

edit, added an image of what I’m referring to

  • EpicFailGuy@lemmy.worldEnglish
    1·
    11 months ago

    If price is your main concern make one yourself. Specially if you don’t need 110

    1. buy a 12v battery of your choice (deep cycle are best, but car batteries will do in a pinch, UPS batteries if you want small)

    2. buy a tool box of adequate size for your battery, allow for extra room

    3. order a “float charger”

    4. Order USB and cigarette lighter ports as desired

    5. wire it all up inside the toolbox

    I’ve made a few with minimal effort, they’re great for camping and my latest one even allows me to jump start a car

    There are plenty of guides out there with more detailed steps

    https://www.youtube.com/watch?v=49Do__99Yr4

    I’m currently making one for a friend, let me know if you guys want to see pics of the components

    • lightnsfw@reddthat.comEnglish
      0·
      11 months ago

      I have very limited experience with this but from what I’ve seen car batteries are terrible for this. They’re not designed to be drained and don’t hold up to it well. Deep cycle is the way to go.

      • EpicFailGuy@lemmy.worldEnglish
        1·
        11 months ago

        This is only applicable if you drain them all the way repeatedly (over draining of the battery leads to sulfate forming on the plates which is)

        https://www.sciencedirect.com/science/article/abs/pii/S0378775303009340

        I combat this by over sizing my batteries. I have a lead one in a tool box I use for camping and I recharge with a solar panel, It’s a standard car battery that for my use lasts 6 hours or so. Normally I use it for a couple hours (between dusk and time to go to bed) to use a laptop, maybe a speaker and an LED light and then I charge it during the day while I go hiking via solar panels.

        If you care for them they can last a long time. There’s also charge controllers you can install to keep it between 20 and 80% charge (for best life) but that’s kind of overkill for my purposes.

        Having said that, yes … deep cycle batteries are a lot better, and even more so are Li Ion and solid state … but they are also significantly more expensive, and I like to use whatever I have at hand.