For me it’s a great little unit it fits a rucksack not heavy and lasts all day (dependent on what you are using ) on a recent trip up north for the day it kept a couple of phones and camera fully charged and the drinks cold on a hot day.
Bluetti AC2A
I have an older AC20 that I use whilst Plein Airing, use a USB fan for personal comfort and drying paint, it will run a bigger fan for an hour , though I try not to wring ithe watts out too fast as it gets really hot, it’s also great to keep the phone charged while streaming tunes.