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They say 20 watts. I say 25 watts (23v x 1.1 Amp). The most powerful simple compact trickle charger I could find. Plug & play. The diode stopped the reverse flow of current at night as indicated by the tiny led light on the charger. Truck is just sitting due to Covid 19. So I needed this trickle charger to compensate for the phantom current losses.
I purchased this panel primarily to power a small 12v fan I salvaged from a computer, to dry out herbs and onions in my garden shed. The fan is rated at .63 amps and runs like a champ with direct power from this panel. I also tested the usb charging ports, and both will recharge my iphone, going up by a couple of percent in a minute or two. My secondary use will be to charge power banks. The USB supply sits on the back of the unit, and has two open slots, so I'm not sure how well they will hold up if exposed to weather, but the rest of the unit is thin and slightly flexible. There is no bulky metal frame. There are 4 mounting grommets, and the unit comes with both a couple of carabiners and 4 suction cups which fit in the grommets for mounting on windows or smooth surfaces. This appears to be well made, of reasonable quality and with good performance.
Just unpacked the unit and am testing it out. I have a several plans to use it. One use pictured is to charge my various power banks. I also will try charging two 12 volt portable radios and a very large power bank. I purchased it mostly for emergencies and if I don’t get too much use out of it, that’s a win too. It seems very well made, was very nicely packed and has a clear plastic protective film that I’ll take off soon.
I have a 10 volt unit I’ve used for years and this new one seems just as excellent, just twice the output.
Should I discover problems, I’ll up date my review!
Right out of the box this little solar panel hooked right up to an USB powered fan!! I tried to upload a video, but it was too long. It has an assortment of accessory cables. Your choice of a barrel plug or 2 USB connections. The day I installed this on my solar power shed, it was very cloudy but it powered the USB fan with no issues! A great addition to help keep my 4000 watt inverter to stay cool in the 100 degree Texas summer!! I would recommend this to anyone who needs a similar set up!!
The Solar Panel Battery Charger works great. I was able to use it to trickle charge my car battery, and phone charging works fine as well. However, I wish the core for charging the car battery can be longer so I can leave the solar panel inside the car. But over all, it's a good product.
The solar panel keeps my marine battery charged so I no longer need to run an extension cord and plug/unplug every time i use the jon boat. It even has a usb port so I can charge my phone while on the jon boat. good stuff!
We purchased mostly for emergencies and to keep our camper battery charged. We have charged phones and bluetooth speakers already. Works great. Plan to travel soon and we are excited to take that. Seems well made and easy to use.