I did some investigation within the Alpicool C20 and it appears to use at most 72Ah @ 12V for each 24h, which can be 864 watt-hours. I’d hope it to employ slightly below that as it won’t be working the compressor https://rebeccaniin472538.bloguetechno.com/the-basic-principles-of-best-portable-power-station-64612612