ECO-WORTHY Solar Panel 25W 18V Monocrystalline Waterproof Panel for Charging 12V Battery of RV Boat Trailer ATV Car or Powering Light, Charing 12V Battery Pack and Other Off-Grid Applications

Works as it should. I have it powering a wifi controlled antenna rotor. It's been doing a great job keeping my battery charged.

I bought four of these panels to maintain a charge on my 48 volt battery backup system. I tested each of these individually and then together before installing them. Individually, each panel put out 24+ volts at midday mounted on a 25 degree slope at latitude 43 degrees. Connected in series, on a flat surface, they together produced 90+ volts at .6+ amps. This is more than adequate to maintain a charge. 8/25/2025 edit with photos. These panels are secured as one portable assembly and are actually maintaining two battery banks, a primary and a secondary. Each bank has its own charge controller but both are fed in parallel from the single panel assembly shown. This is all for battery maintenance. I have a much larger solar arrangement to deploy if needed to run electrical loads. This arrangement has been doing better than expected and I can recommend these panels

18 watts output on a clear day around noon in the winter through a MPPT controller, which is respectable. Provides some output even without full sun or if partially shaded. Well constructed. I would buy it again.

Nice solar panel. Perfect size for trickle charging the battery on my 4wheel camper. Already had a controller installed so I needed a panel without one. Works great.

Panel came pretty well packaged with in its own box. foam inserts on the corners. However I would have liked a foam sheet over the panel itself but this is an inexpensive panel so can't expect too much. Wires are very short and small gauge, maybe 18awg? They are connected to the panel in a sealed caulked box. while this is good for some, I always like to replace the cheap wires with higher grade 14 AWG marine cables. I was not able to in this case which is disappointing. The aluminum casing which the panel is connected to is small. I have a similar panel from another company who's case is much larger allowing easier mounting. This panel has very little room between the aluminum case and the panel, so small I can't even get my fingers in between them. This makes putting screws/bolts in extremely difficult! Operation. In testing it seams as though this panel puts out the advertised voltage and amps. In less then full bright sun it lacks, but that's to be expected with solar panels. This is a decent inexpensive solar panel but the small casing and hard to mount options and the sealed non changeable cable makes this loose a star for me.

Great panel as it is small. Love it. They UNDER advertised the output voltage however. They stated that it was 12V, when it’s actually 24V (which is what I needed anyways). It fits inside my harbor freight Apache 550 hard case that also houses my portable amateur repeater setup. Voltage was at 20V on a very cloudy day (wattage level was reduced breccias my battery was pretty much full).

This panel works great to power the pump for a solar hot water system. Hopefully it will last for many years.

You can't beat the quality and the price. Works precisely as advertised. Highly recommended. P.S. Several of the one-star reviews here are misguided and they're testing methodologies are flawed. This is ONLY a 25 watt panel. If your application sizes correctly for a 25 watt panel, this panel will work well for you.

las utilizo para cargar las baterias de los pastores electricos para ganado donde no hay posibilidad de enchufar a la red me evitan tener que cargar semanalmente en cargador algunas tienen dos años de uso y como elprimer dia

Very pleased with the little panel. Have it on the carport roof keeping the camp battery topped up.

Great price and delivered quickly. Seems to charge even on dull days.

The panel output was better than rated. The panel worked great, even though the 25 watt panel came in a box marked 20watts, the panel had the correct info on the back.

Nickel