Thats some quality feedback brother, Thank you for your time! Yeti 3000 what a beast!!! If 45-55 on means youll get similar to me in idle mode (6-8w), which means that if you get 8 hours of sunlight (enough for 60Ws) a day, thats 480wHs per day that your panel puts back. Mine used 160wHs from jackery over 8.5 hours (with usage of fridge, so about ~20 watt hours per hour average between compressor on/off), so 480 wHs can run it for 24+ hours in similar conditions (~80 degrees F). If you can get 8 hours a day of sunlight and sustain 60 watts, then you can run your fridge indefinitely with that panel. Then you got 3000 wHs acting as backup for rainy days... which is enough for almost a week without needing any recharge.... Like i said, 3000 is a BEAST.
Really all you need is the smallest power bank capacity that can accept solar panel that has a recharge rate of at least 60Ws input, and 8 hours of sunlight a day to get you 60Ws from panel, in order to power this thing for good. You don't even need to turn on your car! I can almost pull it off with my JAckery 160 that is limited to 48Ws recharge rate, just need a panel that can input 48Ws to try. Basically, you got enough leftover capacity there to power your fridge for an entire week without needing to recharge your Yeti lol. Mind sharing a picture of the 3000wH Beast??