RenogySolar Panel 100 Watt 12 Volt, High-Efficiency Monocrystalline PV Module Power Charger for RV Marine Rooftop Farm Battery and Other Off-Grid Applications, RNG-100D-SS, Single 100W

I buy one or two of these every so often when they go on sale. They put out reliable power, look great and are pretty light despite being built like a tank. As you can tell I’m a renogy fan, but they made me this way by offering great products like this. If you can catch a good deal you won’t be disappointed.

It's been 4 months after my installation of two additional 200 watt solar panels giving me a total of 600 watts. Connecting the solar array of three panels in series was easy. Quality exceeded my expectations.I am pulling up to 59 volts and up to 9 amps going to my solar charger controller, almost 30 amps charging my lithium batteries! I am now getting up to 480 watts out of possible 600 watts and that's with panels laying flat on the motorhome roof. I can't wait to see close to 600 watts when I tilt the panels.

This is a great quality solar panel. I have had a few other small trickle panels and a cheap flexible plastic one (total waste of money) and I am really impressed with the power and quality of this panel. It is really too strong for a trickle panel, but i find I can put it in the shade and it works fine with less power and it will totally charge up a "dead" car battery in no time (paired with a cheap charge controller, made mobile safe by hot glue gunning wiring points). I bought a panel this strong because I got a great sale price on it. Very worth it. Small enough to be portable and easily moveable and will fit on my dash even and large enough to really kick ass, charge up a lead acid battery and all my 5 volt usb lights and devices. Great for camping. My only problem with this panel on the onset was that it came with Renology MC4 connectors attached and I had trouble deciding whether to buy more of those or rip off the MC4 connector and just convert to 12 volt automotive water proof connector I already had on hand. For my uses, I was better off without the MC4 (a waterproof rating not size rating) I decided, and I finally pried them off and converted to the 12 volt auto connector, but the psychological block really impacted my project.

Easy to install with optional brackets. They will run at 80% efficiency in full sun, the best I have seen out of several brands of PV panels. Work great for off grid electrical systems.

The panels (5-stars) work well...when......they actually get around to shipping them to you. I've eeduced 2-stars because of the aggravation with shipping.The vendor/Amazon will claim that the item has shipped, for weeks, but the truth is revealed as UPS (the record of truth) always denies receiving the the item(s). You may get the item in 3 weeks.This situation is worse if the panels are on sale (10% off, etc) - even longer transit times. You may get the item in a month or more.So the panels are very good but shipping games are terrible.Also, the vendor hasn't figured out how to use packing tape (say 3-4 8" pieces), so that their overall good packaging won't pop open - with damaged items eventually arriving.To be fair, they will provide you with a UPS label to send them back. This is good.Those responsible for these Renogy fulfillment blunders should be replaced, yielding more profit for Renogy and more satisfied customers that spread the word.I am ready to buy 6-7 more of these 200W panels, but...what further headaches will I be dealing with?It is amazing how some of these companies manage to make a profit. This isn't rocket science! One smart person put in charge of fulfilling orders, and like magic, business would improve a lot.I will update this review when I attempt this drawn-out journey again.Update 10/4/24:This last panel ordered arrived quickly and in a nice new sturdy box. See what happens when the smart people get involved. Adding one more point!

Good construction and performance

As soon as I received the panel's I unboxed everything and set them in the sun to check if they worked. First things I noticed is they are built really well, and they sent me 24 volt panels and I ordered 12 volt so a big plus for me, 96 volts of power from an expected 48 so again a big plus in my favor (After ordering a total of 22 of these they are all producing more than 100W each unfocused and YES they are a good deal). Next I pointed them at the sun and was getting more than rated voltage when in a direct angle to the sun, and I got a reading of 24.5 volts DC on all but 1 which was 22.8 volts DC with them pointing unfocused; in an attempt to imitate the angle they would be in a stationary system on the roof. Of course my opinion may change if they don't work long term but right now I couldn't be happier with the purchase. Edit: It's been a few months now using these panels fully off grid. And I couldn't be happier. Yes I could have spent a lot more money and had fewer panels by buying 300+ watt panels but space wasn't a worry for us money is. We would have spent quite a bit more per watt buying the higher wattage panels. The important thing is each and every one of my Renogy solar panels produces more than the rated wattage under full sun. It isn't a lot but we get over 3200 watts total under full sun with 30 panels now. Which means there is over 200 watts higher than rated wattage total. Thats 2 panels worth. I call them our ghost panels. My opinion of these panels and the company couldn't get better. The PowMr 5000W CC/Inverter we are using can take 450V to the MPPT with a max of 500V 16 amps. Two arrays of 15 panels each at 13 amps is where we are now, thats about 250 V 6.5 amps per array. We are going to add more panels to reach the 450V 16A input potential. Right now we only use battery power under full sun if we use the dryer or microwave oven, everything else is powered between say 8:00 AM to 6:00PM by our panel array which are not focused and is a bit small yet. That includes recharging our battery bank, watching TV, coffee on, lighting and the fridge. If the dryer and AC are on at the same time we may see a small draw on the batteries around 1 or 2 amps when the dryers heating element is powered, which is intermittent. Right now we are fairly balanced. The panels run everything in the house pretty much during daytime including recharging batteries, and the batteries at night; which means the panels are producing all the electricity we use. Adding a few more panels will end using any battery power during a sunny day and adding panels to reach 450V max will probably accomplish that on a cloudy day. And thats the last thing I want to mention. Even though power production does depend on how much light is blocked by clouds or shadows, they do produce power on overcast days. A thin layer of clouds won't appear to make much difference and even on a day with a few rain clouds around we will have power coming from the panels. So my rating is 100% 5 Stars and I'd add another 5 if I could. The panel that produced 22 volts was made wrong. One of the cells isn't connected and what looks like the solder strip is laying across the neighboring cell face. Still can't complain I purchased 12V panels.