I did some investigate on the Alpicool C20 and it appears to use at most 72Ah @ 12V for every 24h, which is 864 watt-hrs. I’d be expecting it to make use of a bit below that since it won’t be working the compressor https://joyceeewr327038.howeweb.com/30992686/examine-this-report-on-best-portable-power-station