Mono-crystalline Solar Panel - 12Volt / 5Watts

I purchased two of these panels about a year ago. They really crank out the power. I have them both wired together into a 12 volt battery system. These panels work flawlessly and are rugged. They will probably still be outside producing power 25 years from now with no worries. These are small 5 watt solar panels that produce power like bigger panels. The mono-crystalline panels are better than the poly-crystalline, since the small mono-crystal panels produce more power than the larger poly-crystal. Example: I have two 20 watt solar panels that are the same size. The "mono" panel produces far more power than the "poly" panel but they are both supposed to be 20 watt solar panels. Therefore I would rather have smaller panels that produce more power than larger panels that produce less. So it appears that the black solar panels produce more power than the pretty blue panels.

Sturdy aluminum frame like larger solar panels makes this one easy to mount. This is a sturdy well made panel that will last decades. Don't be fooled by cheap badly framed alternatives, been there, done that!

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This robust panel, just 10-1/4 x 8-1/4 x 3/4 inches, easily runs a 12V 4.5A exhaust fan in my attic, with as much power as if it was coming from a freshly charged car battery. Direct red/red black/black wire connections, no controller required, but you could put one in plus a rechargeable battery if you wanted it to run for a while longer when the sun goes behind clouds.

It has 2 stainless screws at each corner of the frame, so I undid one of each of them (the one furthest away from the screen) and re-used it to attach the frame to a piece of aluminum angle (1 x 1 x 1/16, 8 inches long) on 2 sides, so that the panel is raised 1/4 inch off the surface to which it is attached, and this allows the (combined wire) cable to emerge unpinched. Then I screwed those angle brackets to the roof.

Just be careful with connections and installation. There are no instructions; the panel comes without a temporary screen cover and with the ends of its black and red connecting wires exposed. To avoid frying the unit, it is best to insulate the wire ends so that they do not touch each other, and to temporarily place a piece of ordinary letter-sized paper over the screen with painters masking tape holding it to the frame. This prevents the panel from trying to generate electricity during installation. If that happens, and the black and red exposed wire ends touch, you could damage the panel.

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Came in the mail well packed in perfect condition.

Appears well made. I bought this panel to keep a pu

truck battery charged, however I have to wait for the

weather to warm up to begin.

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This panel showed 15 volts just out of the box. It recharged the battery on the trailer within hours. Looks well built and not as expensive as I would have thought.