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Topsolar

Topsolar 20 Watt 18 Volt Solar Trickle Charger 20 Watt 18 Volt Solar Panel Car Battery Charger Portable Solar Battery Maintainer for Cars, Motorcycles, Boats, Ships, RVs, Trailers, Snowmobiles, etc

    • Based on 1,729 reviews
Condition: New
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Eligible for Return, Refund or Replacement within 30 days of receipt

To qualify for a full refund, items must be returned in their original, unused condition. If an item is returned in a used, damaged, or materially different state, you may be granted a partial refund.

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Availability: In Stock.
Fulfilled by Amazon
Arrives Friday, Jan 31
Order within 3 hours and 30 seconds
Available payment plans shown during checkout

Size: 20W


Features

  • Light, Simple, Durable Lightweight and easy to carry. It weighs only 1.1 pounds and measures 14.96 x 13.22 inches. Made of waterproof and durable material, the panel is waterproof all over, designed for long-term use.
  • Excellent circuit protection Excellent safety circuit is built in the junction box, which can not only prevent the battery from overcharging and reverse charging but also protect and prompt the reverse connection of the circuit (when the red light is on).
  • Plug & Play Heavy-duty 2.1mm x 5.5mm DC plug with an extension cord. The accessories are complete, the installation is convenient, and no professional knowledge is required. There is no need for additional maintenance of the kit, no electricity bills, as long as it faces the sun, the charger will generate electricity to trickle charge the battery.
  • Applicable to all rechargeable 12v batteries As a solar battery charger and maintainer, it can safely maintain 12v batteries, such as wet batteries, gel batteries, SLA batteries, EFB batteries, AGM batteries and deep cycle batteries, etc., also suitable for Any car, motorcycle, truck, boat, tractor, RV, snowmobile, truck, etc.
  • 12-months warranty The solar panels you buy are of excellent quality, and come with a 12-month free warranty and lifetime technical support. You can contact us for any quality issues within 12 months (Note: Before measure the voltage, you need to activate the product by connecting to the load).

Manufacturer: ‎Topsolar


Part Number: ‎ZL-20W


Item Weight: ‎2.08 ounces


Product Dimensions: ‎14.96 x 13.22 x 0.7 inches


Item model number: ‎ZL-20W


Size: ‎20W


Color: ‎BLACK


Material: ‎PET


Power Source: ‎solar_powered


Voltage: ‎18 Volts


Wattage: ‎20 watts


Maximum Power: ‎20 Watts


Item Package Quantity: ‎1


Batteries Included?: ‎No


Batteries Required?: ‎No


Date First Available: November 24, 2023


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Friday, Jan 31

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.

  • Klarna Financing
  • Affirm Pay in 4
  • Affirm Financing
  • Afterpay Financing
  • PayTomorrow Financing
  • Financing through Apple Pay
Leasing options through Acima may also be available during checkout.

Learn more about financing & leasing here.

Similar Products

Top Amazon Reviews

    • Works to keep a battery topped up
Size: 10W
I originally bought this panel with the idea of putting it on my shed roof and using it to keep my lawn tractor battery topped up. My tractor is old and the charging system is pretty much non-existent, but since the battery is mostly used only to crank the engine, I can get through an entire season with it. Almost. The battery, like the tractor, is starting to get a little tired. I've found myself having to take it out and charge it to get through this season. Let's face it, this battery is on its last legs, and I'm just hoping I can get through the next few weeks with it. So I bought this solar panel and immediately ran out of time to install it on the tractor. Instead, I stuck it in my truck. My poor old truck sits unused for weeks at a time. It always starts, but it tends to crank pretty slowly because the battery draws down between uses. This charge/discharge cycle is hard on both batteries and alternators, and both have gotten too expensive to abuse and potentially damage. Since I don't drive the truck much and I don't want to run a battery tender outside, I decided to repurpose the solar panel as a truck battery maintainer. For this, it works perfectly. The panel mounts to the inside of the windshield with four suction cups. Easy to put on, easy to remove when I want to drive. The panel itself is very thin so I have to treat it gingerly. I wish I could find a solution that didn't involve removing it every time I want to use the truck but so far I haven't. We'll see how it holds up over time to being repeatedly installed or removed. I envision flexing it just a little too much and hearing a fatal cracking sound but so far it's been fine. The panel uses SAE connectors which allows you to attach to the cigarette lighter dongle, alligator clips, or dedicated ring terminals. I use the cigarette lighter adapter because the lighter socket is live on my truck all the time. If your vehicle disconnects the lighter socket when the ignition is turned off, you'll have to figure something else out. SAE connectors are hermaphroditic connectors. That means that two SAE connectors will plug together, but the polarity will reverse (IE the "positive" terminal of one will feed the "negative" terminal of the next one). I triple-checked that the panel would not be wired in reverse polarity in my installation. The panel has a reverse-polarity indicator but I prefer to use a multimeter and see for myself. You can get polarity reversing adapters if you need them but I didn't. Last time I went to use my truck, the panel had been on and charging for about a week. The truck cranked just as quickly as if I'd put the battery on a dedicated charger. I haven't checked current output or state of charge of the battery, but my seat-of-the-pants analysis tells me that it's keeping the battery topped up. Impressive considering we've had a few cloudy/rainy days this week. We'll see how well it works over the winter. In all I'm impressed with this panel. It's a simple solution that (so far) seem to work well. It's WAY less expensive than buying a battery so if it continues to work, I will consider it money well spent. I'll update once I've used it a while longer. ... show more
Reviewed in the United States on September 11, 2023 by Zero Signal
    • Awesome product
Size: 10W
I use this to keep my battery charged in my project car. This works great. It came with several options to hook up to the battery, which I like. I hooked one of the extra hookups to my lawn mower to charge it as well. I plan to purchase another one. I checked it with my volt meter and it was generating 18vdc which is awesome. Great price, great product. ... show more
Reviewed in the United States on June 10, 2024 by Jonah G.
    • Good product for sure 😃
Size: 10W
It works good for what it was made for heavy duty made cuz i dropped it a few times on cement and not a scratch on it and still performing as good as day one
Reviewed in the United States on May 28, 2024 by Grampa
    • It has a built in Charge Regulator! Very Important
Size: 10W
I had purchased a different Solar Charge Panel for my truck and it caused problems. Apparently, the prior solar panel I purchased did not have a Charge Regulator and was applying almost 22 VDC to my Battery. This is NOT good and it actually damaged my battery. This Product has a built in Charge Regulator and protects the Battery. What a Huge difference. IT WORKS GREAT! My truck now sits for weeks at a time between my using it....this Solar Charge Panel keeps the battery topped off. The constant battery drain on all newer vehicles will greatly discharge a battery if it is not operated regularly. ... show more
Reviewed in the United States on February 19, 2024 by Keith Cerosky
    • Cheap and it works!
Size: 10W
Limited use vehicle, battery was not holding a charge. Plugged this in to a "hot" outlet. No more issues with dead battery.
Reviewed in the United States on April 20, 2024 by Arnie
    • Output is 17.5 volts, not 12 volts as advertised
Size: 10W
Review Image by Davis Customs Davis Customs
Cons: Output is 17.5 volts, not 12 volts as advertised which will damaged a 12 volt battery. Plugged it in one of my trucks that sits alot and the silicone edge melted onto a dash cover after only 2 days of sitting on the dash Pros: comes with an extension cord and a multiple different connectors and looks to be somewhat durable (other than the silcone melting on the edge) ... show more
Reviewed in the United States on August 28, 2023 by Davis Customs Davis Customs
    • Appears to be a high quality product. Built in charge regulator is a big bonus.
Size: 10W
I won't be able to hook this up to my boat battery until later this summer but my first impression of this charger is that it is a well-designed and well-built product. I appreciate the fact that it includes ring-type connectors for the threaded battery posts found on marine batteries rather than having to use alligator clips which tend to pop off with the slightest jostling (alligator clips are also included though). When placed in a double pane house window on an overcast June day in Alaska, I measured a no load13.7 volts output which promises to perform well whenb maintaining a lead-acid battery. I assume that voltage is indicative of a well-functioning voltage controller in this unit because at the time the solar array on my roof was only showing 40% capacity. Based upon the apparent build quality and appropriate voltage measurement, I'm giving it a provisional 5 stars which I will revisit if it becomes necessary after I see how it holds up under use in a salty environment. ... show more
Reviewed in the United States on June 3, 2024 by S. Horn
    • Works great, compact size
Size: 10W
We like the compact size but better wattage than others in similar size. Use it with our old chuck wagon buggy that is used as farm use with sprayers, and until this unit, had problems with the battery going dead. No problem now!
Reviewed in the United States on July 10, 2024 by Christina

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