Renogy 2PCS Solar Panels 100 Watt 12 Volt, High-Efficiency Monocrystalline PV Module Power Charger for RV Marine Rooftop Farm Battery and Other Off-Grid Applications, 2-Pack 100W

Brand and quality, works better that expected,

I like these panels, I'm slowing adding to my solar farm. I use them to charge my Lifepo Batteries and run my Ham Radio station. I have 2 that have served me well for a few years now and are still going strong. Haven't noticed and degradation in output yet. They put out a decent wattage even in the shade and cloudy days. Can't go wrong with a Renogy panel.

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.

These Solar Panels work perfect dude. I put them on top of my rack on my truck and keep them plugged into a Anker Solix Power Station and they keep it charged 24/7. I used them during winter on a trip across the country and they kept the battery charged even when it was cloudy they still pulled a great amount of power. I can't wait to get some more for a home power solution. Thank you guys for putting in the work for use remote work guys!

The panels looked well built and sturdy. Shipping, in two boxes, had damaged the frames of one panel in each of two boxes. No replacement option was offered, so I returned both boxes. I believe I will buy these in individual purchases, so each can be replaced separately.

I like these panels. They are fairly cheap for their output. I'm getting a little over half of their rated output for at least 6 hours per day. That's good for where I live. I do find that they need to be perfectly perpendicular to the sun for maximum output. Even 15 or 20 degrees off can reduce the output by 1/4. If you really want the most out of this type you need to use a sun pointing system or if you are running them fixed, arrange them in very small groups electrically.

Do your homework, and limit your expectations. There are many considerations in solar panel technology other than their advertised wattage. Lots of things factor into how many watts your panel can harvest over any given time. Expect less than half the watts advertised for starters, and work on efficiency over time. Once you understand that solar panels must be angled at varying times and degrees, rather than permanently fixed to maximize efficiency, you'll be well on your way. Yes, you can permanently mount the panel in a horizontal position, but depending on the surface and angle of the sun at any given time, this will affect the amount of watts you can harvest. Another big consideration in panels is the amount of landscape they require for their installation, their prospective location, and surface, if any. Some are larger than others and heavier too. The flexible and folding ones have their drawbacks as well. Consider where you plan to put them and how you plan to use them before deciding what to buy. After a lot, a lot, a lot, of reading and research, hundreds of product reviews, and a determination to return them if they didn't perform, I bought these. I'm glad I did because they didn't disappoint me. I don't get 100 watts out of these panels, but I also don't run the risk of overloading my system. Again, be wary of the maximum wattage stated. You'll never get that out of any panel unless perhaps you're out in space pointed directly at the sun. Finally, it's usually a logistics issue but be aware that these require special handling, so even though they were advertised as Prime in terms of delivery when I bought them, mine took a couple of weeks to arrive. At no time were they advertised as being out of stock, so it's fair to think their size and handling are the reason they take so long to arrive. Others have experienced the same kind of delivery delays, so be advised you may not get them in a hurry and so should plan accordingly if your need is urgent. All-in-all, for the price point, these are a very fair deal, even more so if you happen to catch them on sale, as I did. I'm a satisfied customer even if I had to pay regular price and expect you will be too.

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.