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Pros & Cons
Pros
For a few bucks more you get 10 ~20% more power than a 100wattpanel. This thing really pulls in the watts.
Even in the winter, it keeps it topped off. Direct and clear sunlight works best. Impressed with the out put in over cast or low light times.
Cons
These are 25 watt panels not 20. At open circuit is the only way you will see 12v because any loading at all will pull it down to 5 or 6 volts. But voltage is weak and unstable.
The panel is unbranded. Junction box has no wires and no screw-terminals. The connectors are very fragile and break easily.
Highlights
Quality
Good panel for the price, quality is good, use it to power led lights
Overall this product works well for the price and is a power generating solar panel that i used to operate my automatic chicken coop door.
I’ve already pulled 110 watts out of it , with the sun low in the winter sky .
Price
The price was a lot better then the 5 wat one from mighty mule for my gate opener.
Competitiveness
This is the best value panel, but is likely 10-20% more expensive/w than the current 100w monocrystalline panels.
I'm running it through an inexpensive renogy 30 amp charge controller and just have it laying flat on the roof.
I drained a roypow lifep04 battery to under 50% to avoid any current limiting from the rich solar mppt 20a charge controller.
I have this paired with a simple mppt charge controller : https://www.
Overview
- How are reviewers describing this item?
solar, good, small, charged and measured. - Our engine has profiled the reviewer patterns and has determined that there is minimal deception involved.
- Our engine has discovered that over 80% high quality reviews are present.
- This product had a total of 1,010 reviews as of our last analysis date on Jul 15 2023.
Helpful InsightsBETA
Posted by a reviewer on Amazon
Consumers will likely never have perfect conditions to test their panels
Posted by a reviewer on Amazon
A more useful comparison is calculating how costactual watt delivered varies amongst options available
Posted by a reviewer on Amazon
It’s a useful metric in most cases but doesn’t hold in cases involving factors other than money
Posted by a reviewer on Amazon
I ran a comparison of 3 sets of panels in a 10 minute period with no clouds in the skies near noon near fall equinox near the 49th parallel in n
Posted by a reviewer on Amazon
All panels were close together of similar cleanliness temperature and set at the same angle
Posted by a reviewer on Amazon
I drained a roypow lifep04 battery to under 50 to avoid any current limiting from the rich solar mppt 20a charge controller
Posted by a reviewer on Amazon
Data remember that actual watts measured aren’t as important as the comparison
Review Count History
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