{quote author=dogmush link=topic=65872.msg1335805#msg1335805 date=1640983377]
I don't have the fridge yet, but online reviews lead me to believe it draws between 30 (eco mode) and 55 (max cooling) watts when the compressor is running. Testing shows it'll run 35-40hrs on a 1000Wh battery.
Due to packaging, weight, and physical size, I'm not going to do this project with lead acid batteries. I'll look at the other controllers. I'd like the ability to add more panels later if I want.
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So for a 24 hours day of use, you'd need 720Wh ish.
The amount of power per day you can get out of a solar panel, roughtly, is about 3x the nameplate wattage in Wh. A 100 watt panel could be expected to provide 300Wh per day. Of course, it depends on solar irradiance, panel angle, etc. For your use case, I would want 250-300 watts of panel.
Thoughts? Ideas?
Its not a bad idea. Consider second hand panels that are no longer listed for grid tie as an economical option.
Pick your conductor sizes for ampacity, and fuse everything!
Your in a high vibration environment - use stranded wire and grommets.