By | March 25, 2019
Solar Car Battery Charger

Solar Car Battery Charger: Best Rated 5W to 25w Solar Charger for Car Battery

15W 20W 25W Solar Panel 5V 12V Waterproof car battery charger,  keep your car alive for a long time by using the best quality solar car battery charger manufactured by best rated factories, Never worry again about running out of car battery. We Try Harder – Because you’re worth it.

# What is the best solar car battery charger?

# 1. ECO-WORTHY (12 Volts 10 Watts) Portable Solar Car Battery Charger$26.95 – at Amazon

(Temperature: 40°C to +80°C, Size: 8 × 13.9 inches, Amazon Bestsellers Rank )

#2. Sunway Solar Car Battery Trickle Charger (12 Volts 1.5 Watts) Portable – $22.95
(Temperature: 40°C to +80°C, Size:  59 inches,  Mono & Poly)

#3. ALLPOWERS (18V 5W) Portable Solar Car Battery Charger – $22.99
(Temperature: 40°C to +85°C, Size: 56 inches, Mono)

#4. Battery Tender (12V 5W) Super Smart Charging Controller – $64.79
(Temperature compensation sensor, Size: 17.8 × 17.8 inches, Mono)

#5. SUAOKI (18V 12V 18W) Solar Car Battery Charger – $43.99
(Temperature: -20°C to 65°C, Size: 16.5 × 11 inches)


best solar car battery charger

Solar battery chargers put out a little amount of current by converting Sunlight energy. This power may seem low but enough to maintain the charge of a car battery.

Charging a fully drained or dead battery time to time is a hassle and bad for its lifespan. So its better to maintain the current level of the cell and keep it sound and working.

That’s why solar chargers are an Eco-friendly solution providing the necessary energy to batteries of the car, bike, boat, Rv’s, track, tractor. All you need to find a model that eligible to produce sufficient amount of power creating less fuss.

There is one thing to remember, this type of solar charger is nothing compare with residential and commercial solar panels. These little chargers are only for light usage.

#5 Best Solar Car Battery Charger Reviews of 2019

We have tried and tested solar car chargers which are popular among customers due to the straightforward using procedures and performance. They mostly come into small budget so anyone can try these out without spending a lot of fortune. So, let’s get started.

1. ECO-WORTHY 12 Volts 10 Watts Portable Power Solar Panel #BatteryCharger for Car & Boat with Alligator Clip Adapter Perfect solution for charging the car batteries.

solar car battery charger

Where to BUY

Amazon’s Choice: 3.8 out of 5 stars Amazon Gift-wrap available.
Price: $29 List $26.95 at Amazon Try At
Pros: Easy to install and use, Covered with ultra clear PV glass, For Any Rechargeable, LED charge indicator
ConsThe battery panel is fragile
Manufacturer:  by ECO-WORTHY

Our first review for the ideal type of solar car battery charger is for 12 Volts 10 Watts Portable Power Solar Panel Backup for Car and Boat.

# sunway solar car battery charger 12v battery trickle charger
# sunway solar car battery trickle charger portable solar panel

This solar battery charger managed to earn higher points in almost every metric than any other option we looked at, and it impressed all users with its super easy installation.

#ECO-WORTHY Solar Battery Charger Performance Comparison

  1. #Totally waterproof.
  2. #It’s have reverse discharge protection.
  3. #It comes with what it shows in the picture.Solar battery charger
  4. #Output Tolerance: +_3%
  5. #Around 4ft or 1.5mtre long wires that go to the battery which is helpful.
  6. #36 pcs solar cells, Polycrystalline Silicon
  7. #Quick starts your engine.
  8. #Can be used for trickle charger
  9. #Shockproof, rust-proof & dust proof.

Package Includes:

  • 4pcs PVC suckers.
  • 1*Alligator clip adapter with 19inch(0.5meter) cord
  • 1*cigarette lighter adapter with 19inch(0.5meter) cord
  • 1*12V 10W Solar trickle Charger with 59inch (1.5meter) cord

This 12volt 10 watt ECO-WORTHY Solar Car Battery Charger is the perfect solution for charging the batteries of  any automobiles like motorcycles, car, snowmobiles, tractors, bus etc. Easy to use, light weight, easy to install and completely maintenance-free.

It has 15.3 by 9.7 inches panel which weighs only 1.45 lbs. This car charger provides .061A short-circuit current (Isc) and .56A working current (lop).

The car panel is more energy saving compare then other same range cars solar charger. It has the environmental protection layer which resists damaging from air, dust, and high temperature. Also, it requires deficient maintenance to keep working for a long time. You can use this 12v solar car battery charger as a trickle charger too.


  • Suitable for car, tracks in camping, travel, and other outdoor works.
  • Easy to set up in any position and any place.
  • Lightweight and simple settings for operation.
  • Also, charge without direct sunlight.


  • The battery panel is fragile.

Note: Remove the solar panel from the car battery at the time of start the car, boat etc. The heavy current would have chance to damage the solar panel.

2. Sunway Solar Car Battery Trickle Charger Portable Solar Panel Battery Maintainer

Here is an excellent solar car battery charger in reasonable price. Its light, simple, and require nothing but little attention to keep its work.

The Sunway Solar Car Battery Trickle Charger is easy to set on the windshield or dashboard of your car. This 1.5 w amorphous solar panel is reasonable to charge in warm to direct harsh sunlight. Its built-in diode prevents any reverse charging, and blue flashing LED indicator.

The solar panel keeps a 12 V battery topped up. It helps to manage the battery drain in any season. This one is good at serving on cloudy days as well. The solar charger has all the necessary things to set it both inside and outside. You can mount it to the windshield or any suitable place using the mount holes.

The charger has a rigid and durable cover body. It’s made of ABS plastic housing. In the description the manufacturer state that the material is also shock, dust, and rust proof.

However, its overall good in survive rough situation but still you need to be careful. You should keep it inside (if the charger is set outside) at night and while rain or snow is falling.

The solar charger can be an excellent eco-friendly way to maintain a car battery. You can also use it for tractors, motorcycle, ATV’s snowmobiles, RV’s and boats.


  • Can be mounted to the windshield or anywhere you want.
  • Snow and rain proof.
  • Manually adjustable mirror.
  • Stronger and long-lasting cover.
  • Cheap in price.


  • The quality of the suction cups is not so well.
  • Not submersible in water, so watch out when a massive rainstorm is happening.

3. ALLPOWERS 18V 5W Portable Solar Car Battery Charger Bundle with Cigarette Lighter Plug

So, here is another option for solar panel battery charger car which good at fast charging and comes into a reasonably low price.

The 18V 5W Portable Solar Car Battery Charger Bundle is an ideal option for your vehicle, tractor, snowmobile, and boat.

It’s not to charge an entire car battery, but surely keep a cell alive in a state of losing power, power storage, etc. also maintaining the effect of your car battery and extending its usage duration, this solar panel works really well.

The using procedure of this solar powered car battery charger panel is very easy. You need to a 12-volt lighter socket and position panel to get the best shot of sunlight. Yes, its need direct sunlight to charge fully. So, on the cloudy days, you might get trouble to charge the panel.

The good thing is, the charging panel comes with both cigarette lighter plug, alligators, and suction cups. They offer a period of warranty, but you need to confirm it form its official website of where you are going to purchase.

Overall, this is a good product to use with different automobile vehicles and manage them to working for a longer period.


  • Compact size allows set in anywhere.
  • Very simple setting- just plug and play.
  • Built-in blocking diode resists reverse charging.
  • Includes suction cup, charger, cigarette lighter plug, clip line and warranty card.
  • Works with automobile, tractor, motorcycle, and boat.


  • Need full sunlight to get total ampage.
  • Not waterproof, only for inside vehicle.

4. Battery Tender 021-1163 5W Solar Maintainer – Great Solar Car Battery Charger for: Outdoor use, trickle charging, all-terrain vehicles  

Battery Tender 021-1163 5W Solar Maintainer

If your car has space to place little bit big solar charger, then you might think of getting Battery Tender 021-1163 5W Solar Maintainer.

5W solar panel with built-in Battery Tender 3-step micro-controller for super-smart charging that confirms that your battery is not damaged by overcharging 

This one is bigger those mini solar charger that I talked about lately. The dimension of this solar panel is 17.8 x 17.8 x 3 inches and weighs more than  2.5 lbs. So you have to place it pretty carefully. However, like any cars you can use it for motorcycles (off-road) too.

The solar car charger comes with a built-in car charging controller. It’s fully portable and good for battery charging and maintenance.

Like the other ideal solar charging case, this one also has built-in diodes which work for preventing overcharging. This particular unit needs direct sunlight to charge the battery.

Low sunlight is fine but make slower the charging. But on cloudy days it struggles with charging.

However, the Battery tender offers long wire and kit unit, the lead directly wired to the panel is 60″ long, and the alligator clip lead is 24″. So in total, it gives 7′ length. You can buy extensions in various sizes up to 25′ long if needed.

Due to the panel’s size, it’s not capable to set using suction cups. The panel has holes so you can mount on your terrain automobile, and charge batteries.

The mounting process is straightforward so does the maintenance. It requires meager work and time to be taken care off. Overall, robust and durable charger to keep a car battery alive.


  • Suitable for fast charging.
  • Portable battery charging and maintenance controller.
  • Includes temp compensation sensor.
  • Spark resistant.
  • Good for outdoor installation.


  • Not charge on cloudy days.
  • Poor customer support.
  • Expensive as well.

5. Suaoki 18V 12V 18W – Solar Car Battery Charger

Last but not least here is another best solar car battery charger that has solid construction and performance. The Suaoki 18V 12V 18W Solar Car Battery Charger works to keep fresh as the day you left it. Its designed to charge a battery in minimal time fully. It has a water-resistant body which is also very rigid. The structure is suitable to work at high temperature.

Compare than other traditional solar chargers for battery, this one offer 22.5% higher cell efficiency.  Its 18V with 18W of energy is perfect for maintaining batteries of automobile, bike, tractors, including boats.

The panel offers two ways of charging. You can load it using cigarette lighter plug in the socket by placing where the sunlight comes indirectly.

Also, you can use the crocodile clips to connect it directly to the battery by mounting the panel on the car’s windshield.

Typically the panel weighs very low, only 12.49 oz or 345g. The dimension of the product is 16.54 with 11.02 inch. It provides 18-23 no-load voltage and 18V load voltage. It works well in 20-65 degree Celsius.

Asaid from the car/vehicles, you can use it for other low power devices for charging like wireless Ip cameras or power bank. If your device is cable to charging in its power range (18v), then it will do the job of charging fine.

Overall, the Suaoki 18V 12V 18W Solar Car Battery Charger is suitable for using along to maintain your car’s battery life. Your little care will also keep the panel working for years.


  • Prevents your batteries from discharging backward.
  • Built-in blocking diode prevents batteries from discharging backward.
  • Lightweight only 345 g.
  • Weather and schok resistant.
  • Easily chargeable via cigarette lighter plug.


  • Cabler is not submersible.
  • Problem with shading, like lower power charging.


The solar charger is not meant to charge dead batteries. They are best as a battery maintainer which keeps the battery charged to extends its life expectancy. If maintain a solar panel charger properly for cars should run for a long time.

The maintenance procedure is straightforward. Just unplug the charger at night, keep it inside when rains or storm happened, etc. Because, only the blocking diodes cannot prevent all the reverse charging. Also, the water resistant quality does not adequately protect a panel from the water.

The drop rain or splash of water is beautiful, but it does not mean the unit submergible in the water entirely or continuous shower of rain/water and still work fine. At least not in  10-40$ of solar trickle charger for a car battery.

As long as you don’t demand something extreme or logical, a solar car battery charger for the car would give good performance according to its capacity. So, select something that full fill your need and other better construction, materials quality, function, etc. with friendly customer support.


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