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

  • Bosht@lemmy.worldEnglish
    2·
    22 days ago

    Where would you acquire the items to make your own, namely the battery, and what’s the risk of killing myself trying this? Also would you be able to build in solar charging for this?

    • bluGill@fedia.io
      2·
      22 days ago

      18650 batteries are easy to source and cheap. You need a battery welder (either expensive or lively to burn out in one use - there seems to be no middle ground) chargers are also available. The hard problem is everything is marketd at electrical engineers who understand details of how to put circuits together. There are no trustworthy sources of do this or but this kit (at least not that I have found)

      beware that mistakes will burn your house down and insurance won’t cover it. That risk is why even though this should be easy I have not done it.