SOLPERK Solar Panel Kit 20W 12V, Waterproof Solar Battery Trickle Charger Maintainer + Smart MPPT Controller + Adjustable Mount Bracket for Boat Car RV Motorcycle Marine Automotive

I used this SOLPERK 20W 12V solar panel kit on my box trailer to maintain a Jack Boss 5Ah battery and my motorcycle battery while in storage, and it has worked great. It keeps both batteries charged and maintained without any issues. Thanks to this setup, I now have the ability to run lights in my box trailer even when it’s not connected to a vehicle, which has been extremely convenient. The panel feels well made, was easy to set up, and has been very reliable. Overall, this is a great product and an excellent value for the money.

Spent the afternoon setting up this 20W 12V solar charger on my bike, and honestly, I’m pretty proud of how it turned out. Mounted the panel, hooked up the smart controller, and let the sun do the work with no outlets, no hassle. After a few hours, I could already see the battery holding steady, which gave me real peace of mind. It’s not about fast charging it’s about maintaining and knowing your bike is ready anytime. Simple setup, solid results, and kind of satisfying knowing it’s powered by the sun.

Very good, quality, with good power output, continuous and good charging, compatibility with various models of batteries such as camping car or use for your equipment, strong wiring, water and sun resistance material, it does not weigh much so it gives the possibility to move it or take it where you need it, a fair price for power, it is very effective.

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.

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.

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!

Excellent product, highly recommended. The 20W solar panel performs its function perfectly, keeping the battery fully charged without the need for constant monitoring. It is durable, well-built, and easy to install thanks to its clear instructions.

Practical and easy to use, triste solar panel is ideal for maintaining baterías in cars ,RVs,or boats. It's lightweight,portable,and requieres no complicated setup-perfect for emergencies or outdoor use. It provides a steady charle, though It's slow and depends on sunlight. an affordable and funcional opción for basic battery maintenance using solar energy.

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

Good

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.

I purchased with the hope that this charger would keep my car battery charged over several months while I was away from home. I have now used it twice, both for two month periods where the car was parked under a carport. Even though the charger was not in full sun, it has worked and the battery has been fully charged each time on my return.

seems to work great keeping my battery for my trolling motor charged