Same electrical demands here...Refrigerator fans when it is running on propane and LED interior lights and a small laptop.
I started the Propane refrigerator on Saturday AM, turned on one LED overhead light and plugged the laptop in four or five times a day for about an hour each time.
Here is is Monday AM, battery is at 12.5V with the sun just coming up and the refrigerator is at 35 degrees.
Not sure how much propane is left. I sure wish there was an accurate method to determine this.
So far the Solar seems to be keeping up with my demands.
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