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:
BLUETTIcame up in more recent postsEcoflow(specifically theRIVER 2) came up a lotAnkerwas suggested a few times, but the comments weren’t that detailed
edit, added an image of what I’m referring to
Go with solid state. Lighter and it’ll last much longer. https://yoshinopower.com/?srsltid=AfmBOop4ZfctUfN3-XeCk8RO2vJY9pKENf9lsin80O5n-z8iinHKzerR