175W Mono

I purchased the 200w panel to mount on top of the camper shell of my F150. It worked well for over 2.5 years keeping my EcoFlow RiverMax power station charged and running my 12v cooler. On a recent trip, the bypass diodes were burned out, possibly due to an incorrect connection. I contacted Acopower support to either order new diodes or at least find out the specifications of the diodes so that I could repair the panel myself as it was still in excellent condition otherwise. They shipped the new diodes for free and they arrived in just a few days. I soldered the new diodes in and the panel is back to working as before!

I had a 175 watt Renogy (original EOL175) and needed a second to wire in series on a camper. This one has the EXACT same volt/amps/max volt specs including EXACT dimensions. 4 mid mounting holes are identical. Renogy has 4 more on the ends so the OCD of not mounting exactly the same remains as does cosmetically the array is different (not as pure black face...only squirrels will know?) but mathematically they work identically in series, which is the challenge of modifying an install later. https://www.amazon.com/dp/B08CMCZV9J on the left, this on the right: Please don't judge me, 15 year old camper still in Winter storage and Dicor LAP came later ... but matching size & volts say risk it for parallel or series upgrades to match ;-) Only other option was entirely new pair and all new holes on the roof of an RV. NEVER a good plan B!

My rooftop solar water heating system with a 10-watt panel, needed help to pump water on cloudy days. I chose an ACOPower polycrystalline 25 watt solar panel because it has an attractive price, a long warranty. I also considered buying a similar rated monocrystalline, but since room was available for a physically larger solar panel, the extra cost was not justified. My order was promptly shipped with adequate packaging for a trip across country, and arrived in excellent condition. The frame is sturdy Aluminum, and has 4 pre-drilled holes that fit standard Z-brackets. The panel came prewired to a weather-sealed rear mounted junction box with power wiring pigtails and convenient MC4 connectors designed for the outdoors. The frame has tight depth dimensions inside, and required shorter bolts to fasten to the Z-brackets. Once connected, the panel performed as expected on cloudy days, with over twice the electric water pump power than I had before. Following my experience with this small panel, I contacted the ACOPOWER team, and found them responsive to my inquiries on other products.

Panels have reached maximum wattage rated during summer. No problems after several months.

Solid build and portable. Very easy to deploy.

Impressed, pure and simple. It's the middle of December at a latitude of 33.41 degrees north, on a partly cloudy day, and the panel is outputting about 200w. Nice and light, easily able to move around for my ground level install.

Longer version: First; the diode all the other reviewers are debating. No it doesn't have one and that's a good thing. While you certainly can, you really shouldn't be just connecting this to a battery. You should be using a purpose-selected charge controller of a minimal quality that it will almost certainly have it's own. If you're wondering, why not have both; The reason is that each diode drops your voltage by .6 volts. It doesn't sound like a lot but if you're using this in an area that doesn't get a lot of sun, it can make a difference. In my use, I had a seldom used car whose battery died a lot. I combined this with a DIY MPPT controller, purchased here on Amazon for about $13. Also, since the cigarette lighter port on my car only connected when the car was on, I connected to the battery via an “Add a circuit” fuse tap, also purchased here on Amazon for about $7. At first, it didn't work because I had placed it on my dashboard in a way that slanted slightly away from the sun. Once I tiled it as directly at the sun as I could, it worked perfectly.

They work good for my shed, but i was putting 2 in series and realized one of them never had the diode added on the backside under the plastic cover. I had a spare in the parts bin that was the correct one so I was able to install it myself but I shouldn't have had to. I'm not an electrical engineer, but i believe that diode helps protect the life of the panel when in series where one panel is shaded but the other is not.