ATEM POWER 200W Monocrystalline Solar Panel,Portable Solar Suitcase Foldable Lightweight Without Glass, 20A MPPT Controller with USB Output, Built-in Kickstand for 12V Batteries RV Camping Power

I can already tell this is going to fit my needs. Plug it right up to my motorhomes batteries on the exterior & put it in the sun. No need for Integrating or drilling holes or running wires. & then easily folds up into the bag. Love it! Great invention! Update: after using off grid for several months the charging capabilities still hold strong. However the construction of the unit is a bit flimsy. I’d expect better quality hinges & legs for the price. The legs are flimsy & have bent very easily & have broken off their rivets. I will say however that the durability of the panels themselves is outstanding. It’s been thrown around in wind storms & rained on. Still works perfectly. So construction over all is flimsy. Durability is good.Update nearly 2 years later, this is the best & most durable piece of tech my motorhome has in it. This thing has been stepped on. Thrashed around by wind. Rained on. Knocked on its face on cement & gravel. Dropped. Bent to close the wrong way & it still works perfectly. Great value & great durability!

I saw some negative reviews on here about the power inverter and battery charger not cutting off. From my voltage readings, it operates just like it should. Some believe that a deep cycle RV battery should not be charged above 12.8 volts. In theory this is correct. What is not spelled out though is that the voltage of a charging battery vs. the voltage of that battery once off charger and settles are two different voltage readings. To properly charge a deep cycle battery, your charger should take it to at least 13.6 volts with most ranging to 13.8 volts. If one hooks up a charger and disconnects it once it hits the 12.8 volts, you really only have about a 1/2 charged battery. If one regularly only charges to 12.8 volts and maintains that specific voltage, it will actually cause the battery to stop taking much of any charge. As soon as the battery is used, it will drop quickly to the 12.2-12.4 volt which is the bottom threshold to need charged again. The way to correct this is to super charge the battery taking it up to 14.2 volts. A couple battery expert reports I have reviewed indicate that the solar units do this nicely. As long as you don't go over this, you won't hurt the battery. If charging from completely dead of 11.8-12.0 (Don't let it get this dead) to a super charge of 14.2 and doing so quickly, then you have to let the battery vent to prevent explosions or high pressure warping plates. The solar charger doesn't charge so fast as to cause these issues and cuts off where it should. (Car Alternators cut off in this range) So I believe some are nervous about seeing the higher voltages, but I haven't seen any so high to be in danger of damaging the battery. In fact it is taking it to levels to get the most safe charge out of the battery. Once the charger is unhooked, let it settle for a few hours with no load and then measure the voltage. You should be around the 12.8 voltage mark. I have a standard lead acid battery. Bought the adapters to hook up to Zamp ready connector on my unit. (I replaced the 12 volt USB port in the trailer with USB 3.0 fast charger that also has a voltage readout.) The paperwork indicates it is also compatible with other battery types. No settings to change. Haven't tried other battery types, but if I switch to one, I will put it on here and update my review.

Description reads as if it's one pair of panels than weigh 12 pounds. It's actually 2 pairs (2 suitcases) that weigh at least 12 pounds each. Also, these are very flimsy - they almost certainly will not hold up over time.

I purchased this solar panel to take on a trip to Maine and wanted to ensure that I had power while boondocking. The box arrived only a couple of days before I left, so I simply tossed it in my car. Once I opened it at the campground, I realized that it had been opened and resealed before it was sent to me. Upon removing it from it's very nice case, I realized there was dust on the panels themselves and small pebbles on the inside. In addition, there were no other packing materials like plastic or styrofoam. The plug has corrosion on it also. Clearly it had been used before I received it, and I'm unhappy about paying full price for a used item. I'm unsure Amazon will do anything about it since I'm outside of the return window.That said, the solar panel worked fine to keep both of my 6v golf cart batteries charged well enough to use my MaxxAir Fan set at 30-40% all day and night for a week. It is INCREDIBLY heavy/bulky/awkward and used a lot of space in my tow vehicle. It is entirely too large to store in my teardrop trailer. I will have to figure out a way to store it while in transit that isn't so bulky and lets me get to the rest of my gear. The carry bag is just totebag nylon fabric and offers no protection for the solar panel except from dust.It worked, so I'm happy. It was used, so I'm disappointed. It's bulky, so it's awkward to carry/store. But it worked.