I did some analysis to the Alpicool C20 and it appears to make use of at most 72Ah @ 12V for every 24h, that's 864 watt-several hours. I’d be expecting it to make use of a bit less than that as it won’t be working https://charlieiuwp299937.ltfblog.com/29776535/best-portable-power-station-no-further-a-mystery