Newpowa 100 Watts 12 Volts Polycrystalline Solar Panel 100W 12V High Efficiency Module RV Marine Boat Off Grid

This 100 watt panel has exceeded my expectations. The quality of construction is top notch. Wiring and cable connections are excellent. Great value for $80. Here are some quick lessons learned on how to maximize your power production with this panel:1. Be aware that there are 72 cells on the panel (4 across and 18 down). If even ONE of those 72 cells has a shadow or leaf on it you will cut your total power output by 50%. I repeat that if one cell out of the 72 has a shadow on it you are severely limiting your output. For optimal power output of continuous 6 amps you need to have full sunlight hitting all 72 cells (rectangles).2. I can routinely get steady 4-6 amps of power from this panel for 10 hours a day in bright sun.3. My best decision was to mount this panel on a lightweight and mobile frame that I can move left or right and up and down to manually track the sun during the day. I have the panel on my patio in full sun from 8 am until 6 pm. My panel is facing southeast at 8 am, rotated about 40 degrees facing south at 11 am and rotated another 40 degrees facing southwest at about 3 pm. This simple manual tracking system TRIPLES my daily electrical output to my battery compared to a fixed and immovable installation.4. The panel will produce small amounts of power (1 to 2 amps) even on overcast cloudy days.5. I use this panel to keep my 100ah deep cycle battery charged and when using my 2000 watt inverter I can run (one at a time) all my power tools, 1000 watt microwave, 1400 watt vacuum cleaner, 900 watt coffee pot, operate LED lights, charge my phones, etc. The key to success is only using these items during the day (except the lights) when the panel is simultaneously charging the battery. I can even run a 5000 BTU air conditioner or a 750 watt space heater for about 2 hours before it starts to wear down my battery. I always keep an eye on my charge controller when using high drain devices to make sure my battery never gets drained more than 50%. This panel can always “top off” my battery to 100% before sunset each day.Solar power is great, but it requires constant supervision for success. This is a very good panel.

Works great and still is working . Good for use with a mppt charge controller as you can run these in series or parallel. Seems to put out decent amps even on partly cloudy days . Seems to be easily mounted and moved when the seasons change . Panels do need cleaned every now and then to be at their best efficiency. Good panel for a good price . Sturdy and well built

I purchase two of these to add to two Renogy panels I have already but Renogy prices change every day on here from $110 to $140 so I thought I would give these a try. So far they give me more power at 17-19 volts compared to 14-16 volts and 6amps compared to 4.5amps. I’m feeling good about these panels so far! They are a little larger and build is about the same.I’ll report back and update if I have any issues.They are polycrystalline so they work best when pointing directly towards the sun but I just have them mounted flat on roof of my rv and they preform very well especially at noon :)Update: I purchased 2 more for a total of 600 watts of solar for my rv. Very happy with them.Would recommend.

It's really too soon to say if these panels are worth the effort and money. I'm just starting out. A hobbiest really. I haven't installed the panels permanently anywhere yet. I'm still trying different locations and angles. They appear to be made well. I'm a little disappointed in their output. At peak sun I'm only getting about 120W for two 100W panels. I don't expect to get 100W out of each, but 60W in mid-July seems pretty low. It may be that I have yet to find the best location for them. But I am happy enough with them to have ordered two more.

Have had this connected to charge controller and battery to run light bulbs. I'm still getting good power from it now 3 years after I purchased it.

Very happy with these panels, well made, durable, and a great value. Have bought 4 of these so far and will be buying more for two off grid projects I have. Power output is as expected. There is a 1 star review that simply doesn't get it. Wattage is voltage x current .... Not the voltage you want, the voltage the panel puts out. Pretty much all panels put out 17 to 20 volts. The solar charge controller does the down conversion, you still get 100W at13v in the end to charge your batteries.The example of voltage is incorrect too, AC voltage is around 118vac RMS, anywhere from 110 to 125 can be expected depending on where you live. That's not 125v peak. Peak voltage for 120v RMS is 170v. He needs to read up on a voltage and dine waves in addition to what wattage means. He says he still stands by his comment, so given that, I would disregard his rating and his review. These panels are good.

I have been doing solar since the 1990's. I am upgrading my 60 watt panel for a small backup system I have at home and chose this one. I checked the voltage and amperage ratings of the panel I received, and both are within advertised levels. This is also a well-made panel. It comes with connectors and blocking diodes. The silicon used almost looks like monocrystalline, which is a real cosmetic bonus. I can't comment on water resistance as it hasn't been installed very long. However, for under $80, you can't go wrong. Highly recommend this panel and seller who shipped it quickly and packed the item well.

I have 4 of these panels and they are pretty good value. Reasonably priced and decent quality with a few exceptions. The glass scratches VERY easily when moving them around and does have an affect on solar energy collection; more scratches = lower Wattage. Also, the connection point where the cables come out of the plastic box on the back of the panels is weak. It doesn't take much to yank the cable out and then you must solder it back in once it breaks. They do work, will put out full power on a cool, sunny day but they are not very rugged.