ECOBOSS 200W Pro N-Type Monocrystalline Solar Panel, 16BB High Efficiency 25.8% Solar Module, IP68 Waterproof, TÜV Certified for RV, Marine & Off-Grid

You can get more technically advanced panels but these are inexpensive and seem to be pretty reliable, not that I've had them that long. I've been using these to charge my anker c1000 batteries (v1 with expansion and v2) and they have been working ok. They seem to work better serially but that might be my lack of rigor in testing, ymmv. All in all I don't regret buying these and will probably buy more. 2 things to keep in mind, 1: they're big. 2: there's no mounting hardware or a stand. Also, they get very hot in the sun, which should be no surprise. All in all, these seem to be good panels, especially for the price.

outstanding

used on my chicken coop to provide power to door, lights, fan and camera. no issues so far, would buy again.

Have not installed yet but arrived on time and looks like no damage in shipping. Thanks

Built well and even charges when it's almost dark out.

Good for the price don't know how they are compared to other brands, this is the only brand i own. Order 2 panels 1 was broken in shipping got in touch with Eco boss and they sent me a replacement. There customer service in good they got in touch with me with in 24 hours.

So I have 7 of these total, and they work pretty well. My issue is with the 7th panel, ecoboss changed their factory and the 7th panel doesn't seem to be the same specification as the other 6. I've uploaded pix to demonstrate. You can see that the cover over the electronics is different but the label with the stats is the same. When I have two strings of the panels going the one with rhe odd one tends to have lower amps so less watts than the other set. I point this out so you know when you order get what you need and don't expect matching panels if you order more later. I also had some issues with shipping damage but that's a way more obvious problem than undocumented incompatibilities. Buyer beware, especially 2nd tier manufacturers.

Large, and could produce closer to 200W, but great price for a panel.