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 bought this solar panel and I'm very satisfied with the quality. It comes well-equipped with a charge controller, cables with clips, and an adjustable stand, which makes installation very easy. I've used it to keep a 12V battery charged, and it works perfectly, even on partially cloudy days. The material feels sturdy and of good quality, ideal for outdoor use. It's an excellent option for cars, RVs, camping, or off-grid systems. Very good value for the money. I highly recommend it.

I bought the SOLPERK 20W Solar Panel Kit to keep the battery on my RV topped off, and it has worked perfectly from day one. The panel feels solid and well-made, and the adjustable mount makes it easy to position for the best sun exposure. The upgraded controller is simple to use and gives you peace of mind that the battery won’t overcharge. Even on cloudy days, it still provides a steady trickle of power. I’ve used it on both my RV and my boat battery, and in both cases it kept everything fully charged and ready to go. Installation was straightforward — the kit comes with all the connectors you need, and the wiring is clearly labeled. Once it’s set up, you basically don’t need to touch it again. This is a great solution if you want a reliable maintainer for a car, boat, motorcycle, or RV battery. It just works. Highly recommended.

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!

Remo One Star because the Clearly not in M PPT Controller. However comeat work like a Charm and has Survive all of the Winter Storms. It is happily keeping my motorcycle battery charged at 13.8 V. I took a depart because I didn't trust the waterproofing but it turns out it is fully seated in a gel like silicone and unless you wiggle the cables around too much, it will be pretty waterproof for quite some time. just be aware that the polarity on the connector is different from any regular motorcycle battery trickle charger. I ended up cutting the cable and changing the polarity to make a compatible with my existing trickle charger connect war on the motorcycle. I also placed a fuse holder on the positive side in case something tries to burst into flames

This solar charger works exactly as expected and feels well made right out of the box. The 30W panel provides steady solar power, and the 10A MPPT controller does a great job keeping my 12V battery topped up without overcharging. Battery life has been more stable since installing it, especially on my car that sits unused for days. Instructions were clear and easy to follow, and the adjustable mount made setup quick. It’s lightweight, portable, and handles outdoor use without issues. Overall, solid performance and good value for a reliable trickle charger.

I’ve been using this solar charger kit for a while now, and overall it’s been a solid and reliable setup. It does a great job of capturing and converting sunlight efficiently, and I noticed a clear improvement in how consistently my battery stays charged compared to my previous setup. One thing I really appreciate is how flexible the installation is. Being able to adjust the panel easily makes it simple to position it for the best sun exposure, and the overall build feels sturdy enough to handle outdoor use without worry. It’s clearly designed to be left outside and deal with changing weather conditions. The system feels well thought out in terms of safety and monitoring. I like having clear indicators that let me know what’s going on at a glance whether it’s actively charging or already topped off. That takes a lot of guesswork out of using it. The only small issue is the initial setup takes a bit of time if you’re new to solar equipment, and the instructions could be clearer. Once it’s up and running, though, it performs well and feels like a dependable option for maintaining batteries over the long term.

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.

Good quality

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

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