Renogy 100 Watt 12 Volt Monocrystalline Solar Panel, Compact Design 42.4 X 20.0 X 1.38 in, High Efficiency Module PV Power for Battery Charging…

Purchased two for my sailboat. These are great. Very solid build with great frame. Arrived in perfect condition, not a scratch on the panel or the frame. On the way to Bahamas for three months and will update when return. Will likely purchase two more.

In use for about a month on my boat. Sitting in southern Florida with two panels perpendicular to the sun on a clear day. Using MC4 Y branch connectors for parallel feed to 10ft of 10AWG cable to 99% efficient controller. Result is 7.9 amps/13.2v (about 104 watts). What gives?? Why not approaching max of 8 amps? Very disappointed in this low output performance. Tempted to return just because output is misstated

I bought two 100w panels to go with my 40a mppt Rover charger and a 50ah lithium ion phosphate, all from Renogy, for my homemade camper. The panels are sturdy, well designed, and affordable. They come ready to go with MC4 connectors. I bought each for under $100. Even when the weather isn’t idea (cloudy rainy days), I’m still getting more than enough power to charge my 50ah battery. The mppt charge controller is very efficient and able to utilize the panels efficiently. I extended the cables to about 15ft using 8 awg wires . I connected both panels in series and added a 20a circuit breaker before going into the charge controller. I made a custom aluminum roof mount so that I don’t have to drill additional holes on my roof. So far everything is working great.

I’m an amateur solar power person only having one other panel in my life. I hooked the panel up and it worked great–then the output dropped to about half of what it was rated for. I read about how to test it and couldn’t figure out what was going on. Finally I called Renogy–they are difficult to get on the phone, but I finally got through. I also emailed them to explain my concerns and they told me to call. OK, I get a tech on the phone. We went through the testing he requested. His conclusion was that the panel needed to be sent in. I got a stern warning that if the panel worked when they got it, I would have to pay the return shipping. I finally go an email from them saying that the panel work perfectly for them and I would have to pay shipping to get it back. I called them and explained that their tech told me to send the panel in so I thought it was a strange policy that I would have to pay return shipping to satisfy their request. They didn’t seem to care what I thought. I called Amazon and got a helpful employee that told me I should have sent the panel back to them. I told them that I read the Renogy booklet and followed their rules. The Amazon person said that they would replace the panel and they did. The new panel works great. Thank goodness we have a company like Amazon that takes care of their customers.

I get about a 150 watts of output from the two panels on my scrap wood stands sitting on my apartment balcony facing South/ SouthWest form about 10:00 am to 3:00 pm on a sunny day

We have several Renogy panels on our property, this one powers a home made two year old standalone IPcam Wiifi security camera installation along our driveway. The Renogy panels produce significant power even in shade because they use microcrystalline cells. Unlike low end amorphous solar panels, these will continue to produce some power for 20 to 30 years. Would you buy a 20 year battery? The glass over the cells has a mottled surface seemingly designed to reduce reflectivity. I see measurable voltage output just before sunrise. Using an advanced MPPT charge controller typical output under load runs about 19 to 20 volts. I see no flaws at all in this product except for the very sharp corners, wear gloves!

PROS:
Good materials
Superior microcrystalline cells
Rapid delivey
Standard connectors

CONS:
very sharp edges

This is my third order of this exact model. This time the panel is slightly wider at 20.0″ instead of 19.5″ and the spec sheet is different (opt voltage increased and amps decreased). Nets out to 100w and the older ones netted to 102w, so that is still essentially unchanged. I tried to determine the difference. It’s still a 33-cell panel but the cells are not notched in the corners anymore. The outer half cells are just a hair wider, and the gap between them and the frame is a hair wider. I also noticed that the cell wafer design is slightly different. In the oldest version I have, the subcell rows (not sure what to call them) were single black rectangles. In the middle version I have (same specs), each full row alternates between one and two rectangles. In this newest version each row is split into the equivalent of 2 rectangles, but alternates rows of 2 full rectangles and 1+two half-sized recangles. I suspect this has something to do with shade compensation, but it could just be a manufacturing difference. Pictures of the older notched panel (on right) and the new non-notched version (on left), and panel specs attached. Haven’t tested it yet, but it looks like typical good quality panel from Renogy.