I did some research about the Alpicool C20 and it appears to work with at most 72Ah @ 12V per 24h, which is 864 watt-hrs. I’d hope it to use a little bit fewer than that since it received’t be running the compressor https://jimyltd065156.dm-blog.com/27527391/best-portable-power-station-can-be-fun-for-anyone