20W

I’m very happy with this solar panel kit! It was easy to set up, and the quality feels solid and durable. The panel charges slowly but consistently, which is perfect for maintaining batteries on my car and RV. I also like that it comes with the intelligent MPPT controller and adjustable mount, making it convenient to use in different positions. The waterproof design is a big plus, and everything arrived well packaged. Excellent value for the price — highly recommended for anyone needing a reliable solar battery maintainer!

This solar panel is easy to set up and works just as expected. It keeps my battery charged without any problems. The build feels strong, and it handles outdoor weather well. The controller does a good job of protecting the battery, so I don’t have to worry about overcharging. The adjustable mount is very helpful, and I was able to position the panel for better sunlight. It works great for my car and would also be good for a boat or RV. So a reliable and simple solution to keep batteries maintained.

⭐⭐⭐⭐⭐ Excellent solar panel for the price. Easy to install, good quality materials, and keeps the battery charged without any issues. The MPPT controller works very well. I totally recommend it for cars, motorcycles, or RVs.

This panel and controller works as expected. Charged up my 12 volt barreries in a reasonable time frame. Nice and compact. Perfect for my solar experiment to keep 12 volt batteries charged for charging USB devices like phones and led lights.

This solar panel works great, I replaced my old one that went bad with this one on my front automatic gate by USAutomatic. It larger, better made and puts out a higher charge for my battery, it keeps it well charged on shaded parts of the day, winter days and cloudy days. I like the extra feature of having the waterproof controller to help regulate the charge and lets me know that everything is working properly. Super easy to install, plenty of long wire, quick connect plugs on the ends and all well built.

I picked up this solar panel kit to help maintain a battery that doesn’t get used every day, and the first setup was surprisingly straightforward. Everything connected easily, and I didn’t feel like I needed any special tools or prior experience to get it running. Once it was mounted, it blended into the space without being an eyesore. The adjustable bracket made it simple to position it toward the sun, which gave me confidence that it would actually do its job throughout the day. I started noticing pretty quickly that my battery was staying topped off instead of slowly draining between uses. That alone removed a recurring annoyance from my routine. I no longer have to remember to hook up a charger or worry about a dead battery when I need it. The indicator lights are helpful for a quick glance to make sure everything is working as expected. I have left it outside through different weather, and it has held up without any issues so far. It feels like a set it and forget it solution, which is exactly what I was hoping for. The convenience factor really stands out because it quietly does its job in the background. Over time, it has given me peace of mind knowing my equipment is ready when I need it. I also appreciate not having to rely on outlets or extension cords anymore. For the price, the added reliability and reduced hassle make it feel like a smart purchase. I think this would be especially useful for anyone with vehicles or equipment that sit unused for stretches of time.

It includes everything you need, including the mount and controller, which makes setup straightforward. The panel feels durable and handles outdoor conditions well, and the waterproof design adds peace of mind for long-term use. The included controller works efficiently and helps prevent overcharging, which is important for maintaining battery health. It’s perfect for vehicles or equipment that sit for long periods—like cars, boats, RVs, or motorcycles—keeping the battery from draining. The adjustable mount is a nice touch and makes it easy to position for better sun exposure.

UPDATE 1/11/26: It has been over 2 months since I installed this solar charger for my lawn tractor battery and I am still very impressed. I did have to install some extra wire length to reach my lawn tractor battery, but that was not the fault of the solar panel and was relatively easy to do. What I did do, that has been a big help, is glue magnets to the back of the controller, which now keeps it from hanging or falling off the lawn tractor. The controller, with only 3 lights, is easy to read and quickly assess if it is charging and if the battery is charged. Even on cloudy days, this solar panel is charging! I'm considering getting another Solperk Solar Panel kit for my farm tractor stored in a "non-electrified" barn. So far, I really enjoy not having to worry about a discharged battery when I want to use my lawn tractor! I've had no problems with this solar panel and controller! I purchased the SOLPERK Solar Panel Kit 20W 12V, Solar Battery Trickle Charger Maintainer to charge the battery on my lawn tractor, which sits in a shed without electric service. So, the battery didn't seem to maintain a full charge between uses and sometimes wouldn't turn the engine over. I installed this yesterday to help maintain the lawn tractor battery in full capacity. The installation is pretty simple, with a bracket to hold the solar panel provided. Just a note, the bracket can only be mounted in a horizontal position to support the solar panel and provide directional control for the panel to face the sun. Installing the bracket vertically, will only allow the solar panel to be turned left and right and will be perpendicular to the sun if mounted on a vertical post or wall. There is about 8' of wiring to the controller which connects to the panel. The controller requires no programming by the user. Connect the controller to the 12V battery (battery clamps provided with unit) then plug it in to the solar panel and three lights will tell you everything. The blue light (on top of the others) tells you the panel is in the sunlight and providing normal voltage. The second light is red and will tell you that it is charging the battery. The third light (green) appears only when the battery is charged, which means the battery has 14.2 volt charge. It comes with a set of wires to actually screw down on battery posts. So far, the unit seems to be working and has charged my 12V battery fully! No need to remove the connections when charged, as the controller will prevent it from overcharging the battery. I don't know about longevity of the product, the controller is supposed to be waterproof but I keep it inside with the lawn tractor. Other than keeping the solar panel clean with a damp towel, and the battery clamps clean, there isn't much more maintenance required, the instructions say! So far, I do like the unit and being able to keep my lawn tractor battery at full charge! Easy installation!

Very nice unit that works as expected for a good price.

Good

Very happy with purchase. Excellent product. Thank you, recommended seller

Works as stated. Good value. I use it to trickle feed my motorhome starter battery while it is stored. The cables are a fair length for most; however, I did need to extend mine because I wanted it on the roof of the motorhome where it was in the sun all day and not sitting on the ground. It does come with a handy bracket that can be used as a stable stand, or for mounting somewhere. It also has a controller to make sure it doesn't over-charge. I'll see how it goes for a few months and update the review if need be.

Came to date is supposed to come, nothing was damaged, exactly what I wanted, works well