Solar is not my full forte but I will try to answer you.
I am of the opinion that a solar panel should be enough to charge the battery over an 8 hour daylight period. This does not take into account, dark days, cloud cover etc. The output of the panel will decrease dramatically during cloudy days.
Also the regulator plays a big role in battery management, there are 2 main types and 2 main prices one cheaper than the other. Mind you the cheaper device will not perform as well as the more expensive one.
We have a 120W solar panel connected to 2 110AH batteries, the panel is not big enough to fully charge the batteries on a bright day, so we use the generator or plug in at a caravan park every 3rd day.
Hope this is a start for you, as I said this is beyond my expertise.
Cheers
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Ex RAAF, now retired. EX Electrician/Teacher.
Homebase is Murray Bridge Tourist Park (in a cabin). New Horse.. 2020 Ford Everest Titanium, Jayco swan for touring.
Depending on you power usage...
- MY rule of thumb...
If All you have for charging is Solar....
Low load..
for every 100Ah of Battery.. I would go 100-150w of solar... maybe a few LED light's.. charging of mobile phone and maybe some laptop charging... [You only use about 20-25Ah of Battery]
For a Mid lvl load...
- for every 100Ah of Battery.. I would go 200-300w of solar....
For Heavy Load's 400w Plus for every 100Ah..
Personally for me as I'm an extreme user of battery's..
I have 300Ah @ 24v and have 1400w of solar Now.. Have a spot for another panel.. to get me 1600w's of solar...
I hope this gives you an idea....
Juergen
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IF I say something Dumb.. Just Smack me..
I'm full of Knowledge.. I don't profess to know EVERYTHING, but I'm constantly Learning new thing's..
