TWELSEAVAN 30 Watt Flexible Solar Panel 18V 12V Portable Polycrystalline Solar Panel Charger Bendable Thin Lightweight Solar Panel Kit for RV, Car, Boat, Cabin, Tent

Worked well of screen control module did not allow flush mount

It's just not as robust as you would like for charging a battery through an icy winter. A good concept, but nothing beats a glass covered monocrystalline panel.

What the problem with Solar Panel's is that the people reviewing lack certain knowledge for the subject matter at hand. Here it is to the best of my knowledge. I am an educated man. I bought one solar panel, and this one is my second. They work all right. Will charge up a battery you have tanked down 12.4v or 12.1v. These take time to charge, however if you have patience they will do the job very well. I will be using this one to keep my vehicle battery charged up to the maximum, (13.24v.) Types of silicon cells. There are two types currently in production at this time. Monocrystalline, and Polycrystalline. As the name states the Monocrystalline means one cell, and of course Polycrystalline means more than one. The Monocrystalline has approximately a conversion efficiency of 22.5%While the Polycrystalline has about 14-16% Due to manufacturing constraints most of your silicone cells are Polycrystalline. They are just as good, however may take a little longer to charge. You may try these Solar Panels, and if you don't like them, you may return them to Amazon where you always get a fair shake at the product.

It does deliver the trickle charge I need to keep the Cranking battery full but it is flimsy and poorly made. It had wrinkles in the clear coating. All around a disapointment

Purchased this to charge my 12 volt batteries and this solar panel works great!!!!! Took this camping to keep my batteries charged and it never once failed me. Used it during a power outage due to hurricane and it worked great once again to charge my things. I would highly recommend this solar panel to anyone looking one to charge your 12 volt batteries and more.

It says semi flexible I am pretty sure it has glass cells sealed between 2 layers of plexi... Although it has held up for months on a sailboat in salty humid air through a hurricane and plenty of storms keeping the deep cycle charged for the bilge pump...

Checking it after one year and it is no longer delivering any power.The panel is physically intact, no damage.Do not buy it. Choose a reliable brand such as Allpower or Kingsolar.

what can I say except that I am getting great free energy from the sun and enough of it. I am running a 12v water pump for a good sized water fountain and it runs all day and into the night. My simple system has a solar regulator to which a 12v rechargeable battery and this solar panel attach to. take output goes to the water pump.