Best Car Solar Charger in 2021 (Reviews and Comparison)

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One of the worst feelings is sitting down in your car, turning the key, and hearing absolutely nothing. You may have left a light on, or maybe you just let your car sit for too long without driving it to replenish its battery. But whatever it was, it means you can no longer get where you need to go. You may have someone nearby to jumpstart your car, but you may not, in which case your dead car battery could cause you some serious trouble.

If you have ever experienced this, then you probably swore to yourself that you would find a way to be better prepared and avoid this situation in the future. And you also probably promptly forgot about this promise you made to yourself once you got your car back up and running. There is no time like the present to follow through and make sure you never have to experience that terrible silence ever again. One way you can do this is to purchase a solar trickle charger for your battery. 

A trickle charger, as its name implies, charges a battery at a very slow rate. While you may not want to charge your phone or laptop this way, trickle charging is perfect for car batteries. Since you do not need to charge your car battery from empty to full – you only need to keep it topped off – slow charging using the power of the sun is a great way to prevent your battery from losing too much power.

There is a wide range of quality options on the market today. In this article, we will be reviewing five solar chargers for your car battery to help you choose the best one for you.

COMPARISON CHART

IMAGE PRODUCT

Sunway Solar Car Battery Trickle Charger & Maintainer 12Volt 8W Solar Panel Power Charger kit Portable Waterproof for Automotive RV Marine Boat Truck Motorcycle Trailer Tractor Powersports Snowmobile

Sunway Solar Car Battery Trickle Charger
  • Panel Type: Mono crystalline, amorphous
  • Power: 8 watts
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SOLPERK 50W Solar Panel,12V Solar Panel Charger Kit+8A Controller,Suitable for Automotive, Motorcycle, Boat, ATV, Marine, RV, Trailer, Powersports, Snowmobile etc. Various 12V Batteries.

SOLPERK 50W Solar Panel
  • Panel Type: Mono crystalline
  • Power: 50 watts
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Topsolar Solar Panel Kit 10W 12V Monocrystalline with 10A Solar Charge Controller + Extension Cable with Battery Clips O-Ring Terminal for RV Marine Boat Off Grid System

Topsolar Solar Panel Kit 10W
  • Panel Type: Mono crystalline
  • Power: 14 watts
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SUNER POWER 12V Solar Car Battery Charger & Maintainer - Portable 6W Solar Panel Trickle Charging Kit for Automotive, Motorcycle, Boat, Marine, RV, Trailer, Powersports, Snowmobile, etc.

SUNER POWER 12V Solar Car Battery Charger
  • Panel Type: Mono crystalline
  • Power: 10 watts
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SUNAPEX 12V Solar trickle Charger,Battery Charger,Battery maintainer Portable Power Solar Panel Suitable for Car, Motorcycle, Boat, ATV,Marine, RV, Trailer, Snowmobile, etc.

SUNAPEX 12V Solar trickle Charge
  • Panel Type: Amorphous
  • Power: 1.8 watts
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Sunway Solar Car Battery Trickle Charger & Maintainer 12Volt 8W Solar Panel Power Charger kit Portable Waterproof for Automotive RV Marine Boat Truck Motorcycle Trailer Tractor Powersports Snowmobile

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Sunway Solar Car Battery Trickle Charger & Maintainer 12Volt 8W Solar Panel Power Charger kit Portable Waterproof for Automotive RV Marine Boat Truck Motorcycle Trailer Tractor Powersports Snowmobile

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Sunway Solar Car Battery Trickle Charger & Maintainer 12Volt 8W Solar Panel Power Charger kit Portable Waterproof for Automotive RV Marine Boat Truck Motorcycle Trailer Tractor Powersports Snowmobile

Specification

Solar Panel Type:Mono crystalline/amorphous
Maximum Wattage:8 Watts
Size:14.9 x 8.3 x 0.6 inches
Weight:2.66 pounds

Features

  • Charging in any weather
  • Charging indication
  • Easy to maintain
  • Charger and Maintenance Device
  • Overcharge protection
  • Reverse Charge protection
  • Anti-drop protection

First we have Sunway’s solar trickle charger. One of the best things about this charger is the different options you have when purchasing. The charger comes in four choices for wattage: 1.5 watts, 4 watts, 5 watts, and 8 watts. These options are great for tailoring your purchase to the type of battery you are charging and the ins and outs of your situation.

In addition to choosing the power your charger will put out, you can also choose between two different types of solar cells. The 1.5 watt version of the charger uses an amorphous cell, while the other models use mono crystalline cells. These different types of solar panels have different levels of efficiency depending on the conditions, so this option may be helpful.

WHAT WE LIKE

This charger does a great job of keeping your battery full, and the options for different versions of the product will not only help you to attain the best charging for your battery, they will also help you to not overspend. The lower wattage models are cheaper, meaning you only have to pay for what you really need. The charger is also weatherproof, although it should not be completely submerged in water.

WHAT WE DONT LIKE

While this is a fairly durable charger, some users have reported issues with the plastic casing being damaged by the heat. Given that solar panels only work when in the sun, this is not a great quality to have. Luckily, it does not seem that the panel itself is susceptible to melting – only the plastic casing.

PROS

  • Affordable
  • Options for wattage
  • Mono crystalline and amorphous panel designs

CONS

  • Some reports of sun damaging charger
  • Mounting can be tricky
  • Will not work well without correct wattage
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SOLPERK 50W Solar Panel,12V Solar Panel Charger Kit+8A Controller,Suitable for Automotive, Motorcycle, Boat, ATV, Marine, RV, Trailer, Powersports, Snowmobile etc. Various 12V Batteries.

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SOLPERK 50W Solar Panel,12V Solar Panel Charger Kit+8A Controller,Suitable for Automotive, Motorcycle, Boat, ATV, Marine, RV, Trailer, Powersports, Snowmobile etc. Various 12V Batteries.

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SOLPERK 50W Solar Panel,12V Solar Panel Charger Kit+8A Controller,Suitable for Automotive, Motorcycle, Boat, ATV, Marine, RV, Trailer, Powersports, Snowmobile etc. Various 12V Batteries.

Specification

Solar Panel Type:Mono crystalline
Maximum Wattage:50 watts
Size:26.4 x 1 x 20.4 inches
Weight:11.38 pounds

Features

  • Charging in any weather
  • Easy to maintain
  • Charger and Maintenance Device
  • Overcharge protection
  • Reverse Charge protection
  • Short Circuit protection
  • Overvoltage protection
  • Anti-drop protection

This SOLPERK solar panel is a significantly more powerful charger than the previous entry, capable of producing up to 50 watts. While this is likely more than you will need to keep most car batteries topped off, having such a powerful charger does have its advantages.

With 50 watts of power, for example, it is possible to recharge a dead battery given enough sunlight. An 8 watt or lower charger, while it will do just fine maintaining full charge, will not be powerful enough to actually charge a significantly drained battery. If you don’t need that much power, this charger does come in some lower wattage options.

WHAT WE LIKE

This solar charger is very powerful. While we are mainly looking at trickle chargers today, this solar panel is powerful enough to charge a dead battery, even if you opt for a lower wattage than 50. It is a large and efficient device, and if your needs go a bit beyond simple trickle charging to maintain your car’s battery while you are not driving it, then this may be one to consider. For the power you get here, the price is also pretty reasonable.

WHAT WE DONT LIKE

Aside from it being proportionally bulky, which is to be expected, the one major downside to this charger is that it can be prone to issues with the included controller. Some users have reported receiving a faulty controller or having trouble getting theirs to work properly. This means there is a chance you will receive a bit less output from the charger than you should. This problem can be circumvented by using a different controller.

PROS

  • Powerful
  • Easy to install
  • Comes in different wattages

CONS

  • Some reports of problems with controller
  • Bulky

3. SUNER POWER 12V Solar Car Battery Charger

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SUNER POWER 12V Solar Car Battery Charger & Maintainer - Portable 6W Solar Panel Trickle Charging Kit for Automotive, Motorcycle, Boat, Marine, RV, Trailer, Powersports, Snowmobile, etc.

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SUNER POWER 12V Solar Car Battery Charger & Maintainer - Portable 6W Solar Panel Trickle Charging Kit for Automotive, Motorcycle, Boat, Marine, RV, Trailer, Powersports, Snowmobile, etc.

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SUNER POWER 12V Solar Car Battery Charger & Maintainer - Portable 6W Solar Panel Trickle Charging Kit for Automotive, Motorcycle, Boat, Marine, RV, Trailer, Powersports, Snowmobile, etc.

Specification

Solar Panel Type:Mono crystalline
Maximum Wattage:14 watts
Size:16.73 x 10.43 x 2.51 inches
Weight:2.73 pounds

Features

  • Charging in any weather
  • Easy to maintain
  • Charger and Maintenance Device
  • Overcharge protection
  • Reverse Charge protection
  • Short Circuit protection
  • Overvoltage protection
  • Anti-drop protection

The SUNER POWER 12 volt solar charger is another solid option for trickle charging your battery. This charger comes in five different options between 2.4 and 14 watts. While this is not quite as powerful as the 50 watt charger mentioned above, it is more than capable of keeping your car battery at full capacity. Another great feature of this device is its easy installation. It comes with easily-installed suction cups to make setup painless. Its different wattage options are also reasonably priced.

WHAT WE LIKE

This trickle charger has a nice range of options to choose from and will provide a nice amount of current to keep your battery charged. Compared to others on the market, the price is reasonable, making this a solid choice for a solar trickle charger.

WHAT WE DONT LIKE

The 14 watt maximum on the most powerful model of this charger will not be enough to revive a dead battery, so keep that in mind if you need it for that purpose.

PROS

  • Affordable
  • Reliable
  • Nice wattage options

CONS

  • Will not revive a dead battery
  • Some reports of faulty units
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Topsolar Solar Panel Kit 10W 12V Monocrystalline with 10A Solar Charge Controller + Extension Cable with Battery Clips O-Ring Terminal for RV Marine Boat Off Grid System

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Topsolar Solar Panel Kit 10W 12V Monocrystalline with 10A Solar Charge Controller + Extension Cable with Battery Clips O-Ring Terminal for RV Marine Boat Off Grid System

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Topsolar Solar Panel Kit 10W 12V Monocrystalline with 10A Solar Charge Controller + Extension Cable with Battery Clips O-Ring Terminal for RV Marine Boat Off Grid System

Specification

Solar Panel Type:Mono crystalline
Maximum Wattage:10 watts
Size:14.53 x 8.9 x 2.28 inches
Weight:2.99 pounds

Features

  • Charging in any weather
  • Charging indication
  • Easy to maintain
  • Charger and Maintenance Device
  • Overcharge protection
  • Reverse Charge protection
  • Short Circuit protection
  • Overvoltage protection
  • Anti-drop protection

The Topsolar 10 watt Solar Panel Kit is a heavy duty option for charging your car battery. Its tempered glass coating and aluminum frame are sturdy and well-built to provide great resistance to the elements. If you intend to keep your car battery topped off while it sits, then this is another great option. The panel is also lightweight, making for reasonably easy installation, and it comes at a competitive price.

WHAT WE LIKE

This charger has durability on its side, making it a good choice for more unpredictable climates. The price and lightweight build are also great aspects of this charger. 

WHAT WE DONT LIKE

Some users have reported lower than expected power output. This does not seem to be a widespread issue but is good to keep in mind. 

PROS

  • Affordable
  • Durable
  • Consistent power

CONS

  • Some reports of lower than expected output
  • Controller design is not optimal
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SUNAPEX 12V Solar trickle Charger,Battery Charger,Battery maintainer Portable Power Solar Panel Suitable for Car, Motorcycle, Boat, ATV,Marine, RV, Trailer, Snowmobile, etc.

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SUNAPEX 12V Solar trickle Charger,Battery Charger,Battery maintainer Portable Power Solar Panel Suitable for Car, Motorcycle, Boat, ATV,Marine, RV, Trailer, Snowmobile, etc.

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SUNAPEX 12V Solar trickle Charger,Battery Charger,Battery maintainer Portable Power Solar Panel Suitable for Car, Motorcycle, Boat, ATV,Marine, RV, Trailer, Snowmobile, etc.

Specification

Solar Panel Type:Amorphous
Maximum Wattage:1.8
Current at Pmax:110 mA
Size:13.98 x 4.92 x 0.55 inches
Weight:1.43 pounds

Features

  • Charging in any weather
  • Charging indication
  • Easy to maintain
  • Charger and Maintenance Device
  • Overcharge protection
  • Reverse Charge protection
  • Short Circuit protection
  • Overvoltage protection
  • Anti-drop protection

Finally, we have the SUNAPEX 12 volt Solar Trickle Charger. This is a solid 1.8 charger at an affordable price. It is easy to install, and while it will not replenish a dead battery, it provides enough power for most car batteries. If you want an affordable solar charger to keep your battery topped off, this will do the trick.

WHAT WE LIKE

This charger is very cost effective, and if its relatively low output is enough for your needs, it is a great value.

WHAT WE DONT LIKE

The amount of power this charger can produce is relatively low, so you have to make sure it will be enough for your needs before buying. We would have also liked to see more options for different voltages.

PROS

  • Affordable
  • Reliable
  • Easy to install

CONS

  • No options
  • Controller design is not optimal
  • Low power

With so many options on the market, it can be hard to choose the right solar charger. Our top pick is the Sunway Solar Car Battery Trickle Charger. Its cost effectiveness and sturdy build make it a top contender for the best solar trickle charger. Don’t let your car battery run out again!

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