Austinjenna - a quick reply to your question: our residential fridge (and 1k inverter) draws 160A over 24hrs. Remember that for lead acid batteries you only want to draw down about 50% before recharging. Therefore assuming your golf cart batteries give you about 200AHr, you get about 100AHrs or 100/240= 10hrs running the fridge without other loads. If you’re driving you probably get 2-3A/hr charging from your truck so that you’re good for going site to site. If you want to overnight you really need the equivalent of 4 GC lead acid batteries.