FlexSolar 20W 12V Solar Panel Battery Charger Maintainer Kits Trickle Charger with Built-in Charge Controller, Cigarette Lighter, Alligator Clips, O-Rings OBDII Connector for Car, Truck,Tractor, Boat
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Availability:
In Stock.
Arrives
Sunday, Mar 22
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Color: TC-20W
Features
- High-Efficiency Monocrystalline Core: Precision-engineered with premium monocrystalline cells delivering 20%-25% photoelectric conversion efficiency (STC), outperforming polycrystalline and amorphous counterparts in energy yield under equivalent conditions.
- Adaptive Battery Preservation: Intelligent two-phase charging: rapid bulk charging replenishes low-voltage batteries, transitioning seamlessly to micro-current trickle mode at near-full capacity. Neutralizes self-discharge while preventing overcharge degradation, ensuring optimal 12V battery maintenance.
- Universal Compatibility Ecosystem: Versatile connectivity via OBDII, cigarette lighter, alligator clips, and O-ring interfaces. Supports vehicles, marine crafts, outdoor electronics (cameras, pumps, electric fences), and seasonal equipment. Compatible with lead-acid, LiFePO4, AGM, GEL, lithium, and flooded batteries.
- Fail-Safe Charging Intelligence: Integrated smart controller enables autonomous charge cycling - halting at full capacity, reactivating upon voltage drop. Guarantees zero reverse current discharge for perpetual battery safeguarding.
- Sustainable Energy Autonomy: Solar-powered preservation ideal for infrequently used assets. Proactively combats parasitic drain from vehicle telematics/alarms, ensuring instant start readiness. Engineered for battery longevity, not deep-cycle recharge.
Brand: FlexSolar
Material: Monocrystalline
Product Dimensions: 15.9"L x 11.9"W x 0.11"H
Item Weight: 1.7 Pounds
Efficiency: High Efficiency
Brand: FlexSolar
Material: Monocrystalline
Product Dimensions: 15.9"L x 11.9"W x 0.11"H
Item Weight: 1.7 Pounds
Efficiency: High Efficiency
Included Components: Carabiner×4,Sucker×4, SAE to OBD-Ⅱ, SAE to alligator clip, SAE to car charger, SAE to terminal
Maximum Voltage: 12 Volts
Maximum Power: 20 Watts
Special Feature: Lightweight Design, Travel, Water Resistant
Manufacturer: FlexSolar
Part Number: 20w-E
Item Weight: 1.7 pounds
Item model number: YL-20W-TC
Color: TC-20W
Special Features: Lightweight Design, Travel, Water Resistant
Batteries Included?: No
Batteries Required?: No
Date First Available: March 8, 2023
Frequently asked questions
If you place your order now, the estimated arrival date for this product is:
Sunday, Mar 22
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.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
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Learn more about financing & leasing here.
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Top Amazon Reviews
Color: TC-20W
This solar panel is working well after having tried two others which did not satisfy the requirements. I have it inside the windshield running the cable outside to the battery. Although this limits which direction I can park the car during the winter to get Sunshine on the panel, I remedy that by purchasing an additional cable. The panel itself has good quality suction cups, and I attach it with the included. carabiners. The panel has been attached to the windshield for some time and is still holding. We have not reached cold weather yet though hope that doesn’t affect it. The solar panel keeps my 12 V car battery at 13.6 votes. This is in full sunshine or cloudy, it doesn’t make any difference. The quality of the panel is very good. The included alligator clips are good quality, however, the wires are extremely thin. No problem though. It also includes a cigarette lighter plug-in, but with my vehicle, it does not produce the needed voltage going through that to the battery. Also, the included plug-in for the scanner attachment does not work to produce voltage at the battery as well at least not very much. I still give it five stars because it’s doing what I needed to do. In my case, I have isolated the battery by using a disconnect switch at the negative terminal. This way, I simply maintain the battery without having a constant load on it from the parasitic loads of modern vehicles.
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Reviewed in the United States on October 29, 2025 by Sturgisman3
Color: TC-20W
Works great, I don't use my truck frequently and just sitting on my driveway, but having this solar charger makes it sure that I can still start my truck anytime and don't have to worry about my old battery gets discharged over time. This is just to maintain a good charge but not intended of charging a fully drained battery as it only produce little current and will take time to fully charge it.
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Reviewed in the United States on November 12, 2025 by OrvilleJ
Color: 60W
Folds great and while we haven’t reach 60w yet, it’s worked well with our anker 300wh to keep it charged during camping trips. We’ve peaked at 48w on a sunny day and even in overcast get anywhere between 10-20w of charge. Sets up quickly and has loops to attach to tent roofs and cars if needed.
Reviewed in the United States on October 12, 2025 by Dawge
Color: TC-20W
Works well with my 2006 Dodge 2500. Keeps the battery topped off when I’m not using it strongly recommend for anybody that doesn’t drive their cars often.
Reviewed in the United States on January 9, 2026 by tim policy
Color: TC-20W
I don't drive that frequently so keeping my car battery charged became an issue. Bought this, ran cables from the battery to the passenger compartment and stuck this in my windshield facing south. Gets hours of sun all year 'round and keeps the battery topped off. A great investment that has paid for itself already. Easy to install, easy to use and takes a load off my mind! 5-Stars, it's a winner.
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Reviewed in the United States on December 30, 2025 by whitty
Color: 60W
The media could not be loaded. Around 9am with clear skies and the panel is aligned to the sun, I was able to pull 50W via usb-c from this panel while charging my Anker power bank. If you’re charging small gadgets like phones, it’s like plugging it to a wall socket. It’s a must buy for me.
Reviewed in the United States on October 20, 2025 by dddalmacio
Color: TC-20W
Have not tested, used or installed, this yet, because it won't work for my application in the configuration the manufacturer decided on. I want to have the flexibility to place this on the windshield or the driver's side window, and even remove and store it in the trunk when not in use. The manufacturer permanently attacked the longest cord (4-5 ft or so) on the back of the solar panel, intending me to thread that through the firewall if I want to attach the leads directly to the battery (which I do). If I do that I can't remove the panel just by unplugging the cord near the driver's seat. I've had to order a 6 ft. SAE to SAE extension cord, which I will then plug into the panel's SAE cord somewhere near the driver's seat. Very poor design. After all this, I hope it works.
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Reviewed in the United States on January 21, 2026 by Dean Herrington
I send this panel to Cuba for my family and work perfectly and easy tu use
Reviewed in the United States on January 6, 2026 by Jose Reiner