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Callsun

7.5W 12 Volt Solar Battery Charger Maintainer, 12V Solar Panel for Car Battery with Smart Controller, Low-Iron Tempered Glass Solar Trickle Charger for Boat Truck RV Lawn Mower

  • Based on 73 reviews
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Availability: In Stock.
Fulfilled by Amazon
Arrives Saturday, Mar 21
Order within 12 hours and 16 minutes
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Size: 7.5W


Features

  • Smart Solar ControllerThis small solar panels use smart chip to track the power in the solar panel in real time to maximize the effectiveness of the solar panel. At least 20%-30% higher efficiency (theoretically 50% higher) compared to traditional controllers.
  • Full Protection for Your SafetyIntelligent Solar Trickle Charger has 6 kinds of protection functions: With reverse charging protection, overcharge protection, overvoltage protection, overcurrent protection, short circuit protection, over temperature protection and other safety functions. Comprehensively protect the battery, increase the service life and make charging safer.
  • Wide Range of CompatibilityThe Solar Battery Maintainer Automotive is suitable for most common 12V rechargeable batteries on the market, such as LiFePO4, AGM, GEL and so on. It can charge and maintain 12V batteries in your trailers, tractors, trucks, bicycles, motorcycles and boats.
  • Durable and SturdyUsing 3.2mm iron tempered glass and corrosion-resistant aluminum frame, IP68 waterproof material makes the solar panel waterproof and rust-proof, which can withstand extreme weather such as wind, snow and rain.
  • 360Adjustable MountThe solar powered battery charger comes with 360adjustable bracket, which can be easily mounted on the wall, roof, boat. The four corners of the solar panel kit also have corner protectors, which can prevent the solar panel from being damaged in case of accidental fall.
  • What You Get 1 solar panel + 1 charger controller + 1 mounting bracket +1 alligator clips +1 O-rings + 1 set of mounting pieces. We provide one year after-sale service and lifetime technical support. 724 hours After-sales service ensures that your question is answered within one day.
  • CallsunLong-TermistCallsun Solar Panel focuses on long term benefits, and adopts Grade A+ material, which can last for 25 years under the right use.Callsun Solar Panel will be with you for a long time, and we promise to provide you with technical support for our products and warm service around the clock, please feel free to contact us.

Brand: Callsun


Material: 3.2mm Tempered Glass, Monocrystalline Silicon


Product Dimensions: 13"L x 0.78"W x 7.95"H


Efficiency: 30% High Efficiency


Included Components: solar panel


Brand: ‎Callsun


Material: ‎3.2mm Tempered Glass, Monocrystalline Silicon


Product Dimensions: ‎13"L x 0.78"W x 7.95"H


Efficiency: ‎30% High Efficiency


Included Components: ‎solar panel


AC Adapter Current: ‎0.41 Amps


Maximum Voltage: ‎18.42 Volts


Upper Temperature Rating: ‎70 Degrees Celsius


Maximum Power: ‎7.5 Watts


Special Feature: ‎Anodized Aluminum Alloy, Smart Solar Battery Controller


Output Voltage: ‎21.87 Volts


Manufacturer: ‎Callsun


Part Number: ‎CS-DB7.5W


Item Weight: ‎3.52 pounds


Item model number: ‎CS-DB7.5W


Size: ‎7.5W


Color: ‎Black


Power Source: ‎solar_powered


Item Package Quantity: ‎1


Special Features: ‎Anodized Aluminum Alloy, Smart Solar Battery Controller


Batteries Included?: ‎No


Batteries Required?: ‎No


Date First Available: March 4, 2025


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Saturday, Mar 21

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

    • Great product
Size: 15W 2-Pack
These smart solar panels are the ticket to keeping vehicle, tractor etc batteries charged during winter months or storage. They won't overcharge the batteries and so far have done a really good job on my equipment. Would purchase again and recommend.
Reviewed in the United States on December 25, 2025 by PDI
    • Works well.
Size: 30W
Sturdy. We use it to light two arrows at our entrance, it completely charges a 12 volt battery during the day, to power the lights at night.
Reviewed in the United States on January 1, 2026 by Festive Farmstead
    • Very good product!
Size: 30W 2-Pack
It was exactly what it needed works great even in low sunlight! Definitely recommend it !
Reviewed in the United States on January 5, 2026 by andrew
    • Good for keeping leadacid batteries topped.
Size: 7.5W
Works well and has a solid build. Understand it's designed to keep a battery topped off. With only 7.5 watts it's not a recharge muscle machine.
Reviewed in the United States on November 7, 2025 by Robert
    • SAE reverse polarity adapter NEEDED to use with other adapters.
Size: 20W
Buyers please be aware that if you use this with an existing SAE adapter from an AC trickle charger, you WILL need a reverse polarity adapter. No where on the site or the directions alludes you to this fact. I discovered this when my motorcycle battery was completely depleted at 0v when the panel was connected. Now if you use their adapters that are supplied with the panel, you WILL STILL NEED an adapter to plug ANYTHING in that is not a solar panel. They should include an adapter or AT LEAST let us know so we can purchase one separately. Once I discovered this, after taking my battery off and to an auto parts store for them to recover that dead of a battery (45min of my life wasted), the panel does appear to output as designed. ... show more
Reviewed in the United States on November 27, 2025 by Erik S.
    • Perfect boat battery maintainer
Size: 7.5W
This has been on my boat for a year now. Battery is always fully charged. Works GREAT
Reviewed in the United States on November 13, 2025 by Lee
    • Recommend
Size: 20W
Was easy to attach the adjustable stand. Seems to be well made. Have only tested it so far & it seems to be working properly. Good price too!
Reviewed in the United States on December 10, 2025 by El
    • Cost me anoyher
Size: 20W
Just got back into town to another ruined battery i need to pay for because this didn’t maintain my battery. For context, im an electrician so am fairly certain i didnt miswire two leads, and i live in phoenix so i dont think sufficient sunlight is the issue. I think you just sold me something that doesnt work and took my money much like almost every recent amazon purchase ive made recently. Thanks richard! ... show more
Reviewed in the United States on December 26, 2025 by Marykate Greer

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