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Old 13-06-2017, 17:13   #1
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Solar Panels Genssi VS Renogy

Which is best anyone have them? Thanks
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Old 13-06-2017, 18:17   #2
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Re: Solar Panels Genssi VS Renogy

Genssi are polycrystalline solar panels.

Renogy are monocrystalline solar panels.

Because of lower silicon purity, polycrystalline solar panels are not quite as efficient as monocrystalline solar panels. Lower space-efficiency. You generally need to cover a larger surface to output the same electrical power as you would with a solar panel made of monocrystalline silicon.

My vote would be for the Renogy are monocrystalline solar panels.
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Old 13-06-2017, 18:44   #3
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Re: Solar Panels Genssi VS Renogy

For what it's worth, I had a Renogy Poly starter kit (100w) on mine for the three years I had it, and it worked fine for a pair of GC2 batteries, never had an issue. Sold the boat, but I expect it'll continue to work fine.
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Old 13-06-2017, 20:14   #4
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Re: Solar Panels Genssi VS Renogy

Well I just bought 2 100 watt Renogy Poly panels for $109 each-------there was also Renogy 100 watt MONO panels for $152 each! for 100 bucks I can be a little less efficient
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Old 13-06-2017, 21:17   #5
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Re: Solar Panels Genssi VS Renogy

I have 2 150W Renogy panels on our boat. 18 months in, they have worked flawlessly. Wouldn't hesitate to buy another set.

We also have 3 other "off brand panels" (bought from Amazon). We have had multiple issues with those panels. Mostly failing bypass diodes! I'm leary of cheap panels now!
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Old 13-06-2017, 23:31   #6
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Re: Solar Panels Genssi VS Renogy

I bought two Renogy 100W panels for a shoreside application. They worked just fine, but when I was doing some bypass diode experiments I noticed that one of the panels had a problem. I removed the cover from the junction box and discovered that the midpoint connection from the two bypass diodes was *not* connected to the midpoint of the 36-cell string. The diodes were good, but the soldering to the panel hadn't made contact.

This didn't affect the operation of the panel when used by itself, but would be a problem in a series-connected design.

My two panels make up a very small sample size, but that's what I saw.
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