SUNAPEX 30W 12V Solar Panel Battery Charger Maintainer, Portable Waterproof Solar Trickle Charger with Built-in Charge Contro

4.3 4.3 out of 5 stars | 1,815 ratings

Price: 66.99

Last update: 09-06-2024


About this item

【Latest Upgraded Smart Controller】 The SUNAPEX 2024 smart charging controller features an integrated charging microprocessor and upgraded charging algorithms. It boosts charging efficiency by 20%-30% compared to other controllers. With multiple protective functions, it prevents overcharging, overvoltage, overcurrent, overheating, short circuits, and offers reverse polarity protection. Efficiently charge and maintain your batteries without any safety concerns.
【Visual Charging Indicators】 The controller has three colored LEDs: blue, red, and green. These indicators provide clear visibility of the charging status: When sunlight reaches the solar panel, the blue light illuminates. Once the solar panel system is connected to the battery, the red light turns on. When the battery is fully charged, the green light indicates completion. The controller automatically stops charging when the battery is full and resumes charging and maintenance when the voltage drops within the rechargeable range.
【High-Efficiency Monocrystalline Solar Cells】This solar battery charger uses the highest conversion efficiency monocrystalline solar panel cells, this system achieves an impressive 25%-30% conversion efficiency. Compared to traditional polycrystalline and amorphous solar panels, it charges faster and more efficiently.
【Tough ETFE and Weatherproof】ETFE, known for its exceptional toughness, is used on the surface of this solar battery maintainer. It boasts a 95% light transmittance and remarkable weather resistance. Whether exposed to sunlight or rainwater, these panels remain stable and maintain their efficiency over time. The entire solar panel is sealed to be waterproof, windproof, and sandproof. It can withstand various outdoor conditions, including rain, snow, hail, thunderstorms, sandstorms, and high temperatures.
【Wide Compatibility】This solar trickle charger can charge most popular 12V rechargeable batteries, including sealed lead-acid, lithium, LiFePO4, gel, AGM, and more. It’s suitable for charging batteries in trailers, tractors, trucks, boats, motorcycles, RVs, cars, lawnmowers, water pumps, gate openers, electric fences, and more. The kit includes three types of battery clips (alligator clips, O-rings, and cigarette lighter adapters). The controller and solar panel are integrated, eliminating unnecessary connection steps. The SAE plug-and-play design ensures convenience and quick setup. It can charge single 12V batteries, two 6V batteries in series, or multiple 12V batteries in parallel.
【Easy Installation and Portability】This lightweight and compact solar panel is highly portable, making it convenient for travel without adding extra burden. Equipped with suction cups and carabiners, you can easily attach it to car windows, windows, or hang it anywhere you need.
【Worry-Free Warranty and Support】SUNAPEX provides a one-year warranty for the solar panel and lifetime technical support. Our 24/7 customer service ensures prompt responses to your inquiries. If you’re unsatisfied with our product or need technical assistance, feel free to reach out anytime.

Product information


Top reviews from the United States

Inlet Sound
5.0 out of 5 stars Great for keeping that car in your backyard charged!
Reviewed in the United States on February 25, 2024
I have been researching, debating, shopping, reading reviews for a very long time and felt like I found what I was looking for in this 10W charger so I purchased a few months ago.
I buy and sell a few cars as a hobby and in some cases the car sits a very long time before I get around to selling. I do use pug in battery maintainers on motorcycles and cars in a garage that are close to AC power but I needed a good solar charger as I have a few cars in my back yard that I try and start and run but during winter months I forget, This 10w version is perfect. I check the cigarette lighter, 12v outlet in my car / suv to make sure the inside 12v outlet does not turn off with key ( Use a cell phone charger with led light to check yours ) but I prefer to use the inside the car plug simply so the unit does not sit in the rain, as I understand it has no issue with rain but I siply keep it in the front window and it works fine.
The #1 thing I needed with a charger is that it had to have the built in maintainer "smart" electronics as I did not want to overcharge my battery. Looks like many other small solar charges does not have that smart box but this unit does! I was surprised to the build quality as it looks and feel better that I was expecting. I have an older SUV that the battery was getting old and weak and failed to start. I did charge the old battery with a plug in charger but I then connected this solar charger and the car sat but this unit kept the battery charged, The 10w version I find perfect for keeping car batteries ready to crank!
Happy With the product!
Juan Largo
5.0 out of 5 stars Does the job very well
Reviewed in the United States on April 24, 2024
I got this to maintain the battery in my pickup truck, which I seldom drive. I just laid it on the dash under the wind shield, and plugged it in to the 12v aux port in the dash. So far it has kept the battery topped off, even on cloudy days.
If you do use one of these make sure the 12V port is connected even when your vehicle is off. If it is not, best to go straight to the battery with the supplied clamps. Overall, I am very happy with this unit and highly recommend it.
Old rancher in Colorado
4.0 out of 5 stars Does provide power
Reviewed in the United States on March 2, 2024
Needs more sun than the one it replaced. Sometimes I only get 8 volts which will not charge a battery. Tractor did stary after 2 or 3 months so expect it does change sometimes.
R. Hays
5.0 out of 5 stars It works good.
Reviewed in the United States on May 1, 2024
Works perfectly. Have a pickup who's battery usually dies after a day. Have installed this months ago and it brought the battery up from dead and keeps it charged. We keep the trk in the sun and only start the truck about once a month. Starts every time.
Rick L
5.0 out of 5 stars Easy to use
Reviewed in the United States on May 15, 2024
Great system and installation is simple.
woodbutcherAmazon Customer
5.0 out of 5 stars works great
Reviewed in the United States on May 14, 2024
I use this to keep the battery charged up on my portable sawmill, works great, havent run out of power yet..
SeeAndSay
3.0 out of 5 stars On a cloudy day, they do not charge
Reviewed in the United States on March 7, 2024
These solar chargers work differently from what I was expecting.
I thought the chargers would charge 5 watts on a sunny day. But on a cloudy day, they would still charge, but simply with less wattage.
However, when I tried them on a cloudy day, the voltage I was getting went from 5v to 7v, depending how much shade it was getting, but it never reached the voltage sufficient to charge. In fact, I suspect, without knowing for sure, it might even discharge your battery. Because if you connect 2 batteries together, and one has higher voltage, it will be charging the lower voltage battery, so it will be discharging it self. But I feel they made the charger not to do that. It just doesn't make since if they discharged your battery.
In my case, I bought 2 chargers, but both of my cars will never see full sun. So these chargers are not for me.
But if your car can be in full sun a good portion of the day, maybe they will work for you. I just don't know.
So if anyone wants to try, here is a bit more info:
The plastic suckers are pretty flimsy. I have not tried them. But from how they look, I don't think they will work well. To me, it does not seem like a problem, because I was planing to simply place the panel on top of the dash board.
I am not sure if the panels are water safe. I was not going to use them outside.
And most importantly: the ease of installation: if your car has a cigarette lighter that is "live" (see if it heats up), when the key is out, then the installation is very easy. However, my car is 20 years old, and already at that time, the cars (at least my car) were made such that the cigarett lighter is dead when the key is out. In such case you need to thread the wire from inside the car, (at least that was my plan on how to use this charger) to the engine compartment. And while it is definitely possible, if you are not an auto mechanic of sorts, good luck with that, meaning it might be very challenging to do that.

Best Sellers in

 
 

200W Portable Power Inverter for DeWALT 20V,Ecarke Outdoor Generato Battery Converter with 2 USB&LED&AC Battery Powered Outle

4.2 4.2 out of 5 stars 246
48.99
 
 

DC HOUSE 20W Solar Powered Dual Metal Shell Exhaust Fan Kit for Chicken Coops, Greenhouses, Sheds, Pet Houses, and Windows -

3.8 3.8 out of 5 stars 452
58.98
 
 

CircleCord 4 Prong 15 Feet 30 Amp Generator Extension Cord and Inlet Box with Locking Connector, Heavy Duty NEMA L14-30P/L14-

4.7 4.7 out of 5 stars 731
69.69
 
 

EF ECOFLOW 100W 12V Solar Panel, High Efficiency Monocrystalline PV Modules, IP68 Waterproofing, Ideal for RV& Marine Rooftop

4.8 4.8 out of 5 stars 71
129
 
 

Renogy Solar Panel 200 Watt 12 Volt, High-Efficiency Monocrystalline PV Module Power Charger for RV Marine Rooftop Farm Batte

4.6 4.6 out of 5 stars 3060
174.99
 
 

EF ECOFLOW Solar Generators, DELTA 2 Portable Power Station with 2PCS 100W 12V Solar Panels, 1024Wh LFP Battery, Fast Chargin

4.5 4.5 out of 5 stars 132
579
 
 

EF ECOFLOW Portable Power Station DELTA 2 Max, 2400W LFP Solar Generator, Full Charge in 1 Hr, 2048Wh Solar Powered Generator

4.5 4.5 out of 5 stars 953
1699
 
 

RVINGPRO 50 Amp Generator Cord 25FT and Power Inlet Box, Pre-Drilled 50 Amp Generator Inlet Box with Cord, NEMA 14-50P to SS2

4.6 4.6 out of 5 stars 592
159.99