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

Great working sturdy panel. Using to keep a car battery charged for a WiFi camera with a cheap PWM charge controller. Been working great so far for about 2 months. So far so good.

These panels are great! Very sturdy and very well made. Produced good voltage and 100 ma in medium sunlight. Very good! Thank you!

Works as required.

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.

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

I own a number of solar panels of various brands (most are very similar so shop by price for the size/wattage you're looking for), and so far I've had really good luck with them. This one is no exception. These newer panels are more efficient, so they produce more power with a smaller size. This one works well for keeping a battery maintained using an inexpensive solar charge controller. I like to hook up jetskis, my boat, tractor, plow truck, etc to this type of setup as it keeps the battery topped off between uses. Time will tell if this one holds up as good as previous panels. I'll update this review as needed once it's been out in the weather for a while.

Bought this for a research project! It's definitely done its purpose!

well made solar panel with a solid output.