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SUNAPEX

SUNAPEX 20W 12V Solar Panel Battery Charger Maintainer, Portable Waterproof Solar Trickle Charger with Built-in Charge Controller, Cig Plug, Alligator Clips, O-Rings for Car, Truck,Tractor, Boat, etc

    • Based on 2,004 reviews
Condition: New
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Availability: 20 left in stock
Fulfilled by Amazon
Arrives Saturday, Feb 1
Order within 1 hour and 34 minutes
Available payment plans shown during checkout

Size: 20W


Color: Black


Features

  • Battery Savior: Our solar panel is designed to charge and maintain 12V rechargeable batteries. Use it to charge and maintain infrequently used vehicles; boats; outdoor electronics; lawnmowers, and more. Ensure your devices start anytime and protect batteries from long-term discharge. Its also ideal for off-grid devices like electric fences; gate openers; water pumps; weather systems; cameras; etc. Compatible with most battery likes sealed lead-acid; lithium; LiFePO4; GEL; AGM; flooded; etc
  • High-efficiency Solar Panel: Our solar panel features monocrystalline cells. Compared to other polycrystalline and amorphous solar panels of the same size, our monocrystalline solar panel charges faster
  • No Overcharging, No Battery Drain: The solar panel includes a built-in controller that prevents overcharging. When the battery is full, the controller stops charging automatically and resumes when the voltage drops. Our solar panel system wont drain your battery
  • Visual Charging Status: The controller has 3 indicator lights: blue (sunlight exposure); red (charging); and green (battery full). Easily monitor the charging process
  • IP67 Waterproof: Our fully sealed solar panel system is IP67 waterproof, suitable for all weather conditions
  • Easy Installation and Portable: Lightweight and flexible, our solar panel can be effortlessly carried anywhere. Equipped with suction cups and carabiners, its easy to install on car windows or hang wherever needed
  • Worry-Free Warranty and Support: SUNAPEX offers a one-year warranty and lifetime technical support for our solar panels. Our 24/7 customer service ensures prompt responses. If youre unsatisfied or need technical assistance, feel free to reach out to us

Brand: SUNAPEX


Material: ETFE


Product Dimensions: 13.7"L x 1.5"W x 14.96"H


Item Weight: 1.06 Kilograms


Efficiency: 30% High Efficiency


Brand: SUNAPEX


Material: ETFE


Product Dimensions: 13.7"L x 1.5"W x 14.96"H


Item Weight: 1.06 Kilograms


Efficiency: 30% High Efficiency


Connector Type: SAE


Included Components: 1 X 20W Solar panel +1 X Cigarette lighter+1 X Alligator clip+1 X O-ring wire +1 X Manual


AC Adapter Current: 1.11 Amps


Maximum Voltage: 12 Volts


Upper Temperature Rating: 140 Degrees Fahrenheit


Maximum Power: 20 Watts


Special Feature: Built-in charge controller, visual charging status indicator, IP67 waterproofing, easy installation


Item Weight: 2.33 pounds


Manufacturer: SUNAPEX


Country of Origin: China


Item model number: SA_RXMPPT_30W


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Saturday, Feb 1

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

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Leasing options through Acima may also be available during checkout.

Learn more about financing & leasing here.

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Top Amazon Reviews

    • Great for my solar Meshtastic nodes
Size: 20W Color: Black
This 20W solar panel has proven to be a reliable power source for my Meshtastic node. The built-in charge controller is particularly valuable for this application, preventing overcharging of the battery without needing additional components. I'm getting consistent power output even in partial shade, which is crucial for maintaining node uptime in less-than-ideal locations. The panel's physical construction is appropriately weatherproof - I've had it outdoors through several rainstorms without issues. The included mounting O-rings are sturdy and make it easy to secure the panel to poles or other structures. While the cigarette lighter adapter isn't particularly useful for Meshtastic applications, the alligator clips work well for connecting to standard battery terminals. For Meshtastic users specifically, I found the voltage output to be very stable, which helps prevent node resets. The 20W capacity is actually more than needed for a basic node setup, but this overhead is helpful on cloudy days or when running additional sensors. You'll want to add appropriate connectors for your specific battery setup, but the included wiring is of good quality and easily adaptable. One minor consideration is the somewhat limited length of the included cables, so factor in some extension wires if you're planning to mount the panel any significant distance from your node. Also, while the frame is sturdy, you might want to add additional UV-resistant coating if deploying in extremely sunny locations for long-term installation. ... show more
Reviewed in the United States on January 22, 2025 by CJ
    • Works great!
Size: 20W Color: Black
Easy to install, keeps my problem batteries charged and ready to go.. Using it on a backhoe, dump trailer, and a rarely used F250. The truck and backhoe are both extra large battery capacity, and worked great.
Reviewed in the United States on January 12, 2025 by Robert McCartney
    • Works great
Size: 10W Color: White
I like the fact that the connections are the longest one I could find about 6 to 8ft. Mounted on outside wall and connection to an ATV inside works with some to spare. 6 months later the battery started right up, 3 months later the battery is still fine so no over charging... Good product this is my second one due to 2nd vehicle... ... show more
Reviewed in the United States on January 11, 2025 by G
    • Great Solar Charger
Size: 20W Color: White
Review Image by Invoxicated Invoxicated
My experience with solar chargers started about a year ago. I had a 5 watt charger that a friend had given me for my generator battery. I never used it for that. Fast forward one year later - I have since retired and my truck sits in my driveway a lot more than it used to. My battery kept going dead so I tried the 5 watt charger and waited a week to see if it either worked or if my battery was dead again. To my surprise it worked! My truck started right up but the problem was that the old battery was 4 years old at that point and I knew that this was going to keep happening unless I either went back to work or I was going to keep the solar charger on my truck battery. The sun and the heat warped my 5 watt charger so I needed a new one. I saw this one and it was on sale at the moment I purchased it here on Amazon. You should know that any solar charger you buy will be subjected to extreme heat and light so please keep that in mind when you buy one of these things. I recently went to remove mine during a hot afternoon and nearly burnt myself because the unit was so hot after being on my dashboard in the midday sun in front of my dashboard heat shield (see pic). 20 watts seems to be the limit for a solar charger before it needs a separate controller to regulate the flow of power to what whatever it is you're charging. Also for those who care at 20 watts the charger is putting out about one amp of DC electricity which would be the equivalent of a trickle charger output from a battery tender. I like this unit because the solar panel is flexible instead of being rigid or made from hard plastic like my 5 watt charger. The holes in each corner give you the flexibility on how you want to position for maximum sunlight exposure. In my case I laid the panel down on my dashboard and put my big sunshade behind it to protect the dashboard and interior of the truck from the heat and sun fade. The sunshade keeps the panel propped up for best sun exposure. I didn't write the review until I tested it out the same way I tested the 5 watt panel, by waiting a week to see if my new battery (Northstar AGM- NOT RECOMMENDED due to it going dead within 10 days of inactivity and VERY poor warranty support-see my review) would be able to start my truck (Nissan Murano). The Murano has a 3.5 liter engine, not a big engine by any standard yet I have to keep a solar charger on it in order to prevent the battery from draining on me. The charger has been on my truck for about 3 weeks now and whenever I decide to go for a drive my truck starts right up with no issues. I disconnect the charger before I start the truck and when I come home I reconnect it. A bit of a pain in the neck but it guarantees that my truck will always start no matter how long it sits in my driveway I can see this charger might have other uses too. It could be used in a camping situation to charge battery packs or an emergency situation as well. The only minor quibble I have is that the panel does come with a small controller attached to the back to let you know that the charger is charging. There are 3 lights on this little controller. One to let you know that it's receiving sunlight so that it can function. Another LED to let you know that it's charging whatever battery you have it attached to. Then there is a third LED, a green one. Once an item is fully charged the green light is supposed to come on. I have yet to see this green light come on but the charger does work as it's intended. Update 5-29-21- The green light on the controller does appear to function! I noticed the other day after having my truck sitting with the charger attached the green light on the back of the solar panel was on! Apparently my battery must have been low and it took time for the charger to top off the battery. Highly recommended -------------------------------------------------------------------------------------------------------------------------- I rely heavily on reviews when I make purchases so I put some time into reviewing everything I buy on Amazon for personal or business use so I can help other people considering that item. If you found my review helpful, please consider hitting the "helpful" button below when it asks if the review is helpful. Thank you! ... show more
Reviewed in the United States on March 30, 2021 by Invoxicated Invoxicated
    • Exceeds Expectations
Size: 30W Color: Black
Wow...notwithstanding a brand new battery needing a little frosting....about 2 hours under 21 volt direct sunpower (thought the panel might warp ) the green light came on. Stay with the sun for best results....shooting just the sky won't give you 10 volts. A mini alternator if you will, just not enough to charge my s22 ultra on its own power though using a pigtail. Watch not to bang that charge controller....looks fragile. Nice laminated six 5watt panels in series....nice. works even in clouds. I get around 14 or so. ... show more
Reviewed in the United States on May 31, 2024 by Criss

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