Quote:
Originally Posted by tinker3030
I was going to ask a question about adding solar to my coach. I have a residential fridge and was wondering if a 100 watt suitcase type would keep my 2 12volt batteries charged enough to power the fridge.
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Simple answer: no...
Longer answer: find amp draw of your fridge (on label)... I expect it is 5-10 amps... I’ll assume the low end of 5.
Multiply amps times volts to get watts... 5*110=550 watts.
Now add in inefficiencies - 100 watt panel will not deliver 100 watts to battery; there is a cost (loss) to inverting 12v to 110v; and of course in the continental US we don’t get 24 hours of sunlight per day...
The fridge doesn’t run continuously so some gain there... but you will need more than 100w to sustain.
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