I did some analysis over the Alpicool C20 and it appears to use at most 72Ah @ 12V for every 24h, that's 864 watt-hours. I’d be expecting it to utilize slightly under that since it won’t be working the compressor https://jayktdc895078.goabroadblog.com/29903007/helping-the-others-realize-the-advantages-of-best-portable-power-station