I use an old solar panel to keep my batteries topped off in my 5th wheel camper and also use one on my boat to keep its battery in good shape. I use a panel that is about 18 inches by 3 feet. It's 25 years old, not sure what its made of , it has blue crystals in it.. It will only put out
2.9 amps in full summer sunlight , pointed straight at the sun, not laying down. If you get new panels , they are about 3 times more powerful than the old ones. Our railroad uses one panel , same size as mine and it puts out 9.8 amps! So panel technology has come a long way. So your frig draws 3 amps? Thats DC? Is it a thermocouple type? My frig draws about 300 watts,,,but thats AC and about 3 amps... Most RV frig's just draw too much for solar power. Maybe if you had the whole roof covered , then that's only power during the day. I have a portable cooler which uses D.C. , but its about 10 amps and will wipe out a battery in half a day so you can only use it while driving..and then it only drops the temperature about 35 degrees at best. I'm beginning to babble now,,,so hope this helps.
-- Leo Yudysky '68 bug '69 bug
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