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Bryan Wilson
  Mar 25, 2023 2:05 AM

Solar car battery chargers offer a host of benefits that cannot be understated. Not only do they provide a clean and renewable source of energy, but they also help to reduce your carbon footprint and save you money on your energy bills.
In addition, solar car battery chargers are very easy to use and maintenance-free. They are also portable, so you can take them with you wherever you go. And if you ever need to replace your battery, you can do so without having to replace your entire charger.
So, if you’re looking for a way to reduce your carbon footprint and save money on your energy bills, solar car battery chargers are the way to go.


Have you ever felt fed up when you get in your car and start the engine, and it seems to be about to run out of power? Especially when you go somewhere far from home, and it's late at night?

In recent months, we have discovered the value of keeping the best solar car charger in case our battery runs low.

They cost little upfront and save money - as well as the environment - in the long run. Plus, they are safer and more convenient to use than standard chargers.

1. How Does the Best Solar Car Battery Charger Work?

A solar car battery charger works on a simple idea, although the details are more complicated. Solar panels are made for the purpose of charging cars and have the right connectors to use for this purpose.

The solar panel itself uses photovoltaic cells – solar cells – to capture light from the sun and convert it into direct current or electricity that your car battery can use for charging. They work best in direct sunlight, although low light and cloudy conditions will still generate some charge.

How Does the Best Solar Car Battery Charger Work?

How Does the Best Solar Car Battery Charger Work?

Source: Pinterest

The solar car charger has solar panels on the face allowing you to place the panels near a window or in the dashboard to capture sunlight during the day.

Some chargers connect directly to the battery, while others power through a cigarette lighter or car outlet.

2. What is the Difference Between Conventional and Solar Car Battery Chargers?

Besides the obvious difference in capacity, the main difference between a solar car charger and a conventional charger is that the standard charger is usually used to charge a dead battery fully.

The other main difference is that a solar charger is less likely to overcharge your battery and cause damage, although that can still happen even with a solar charger.

The best Solar Car Battery

The best Solar Car Battery

Source: Pinterest

3. Do Solar Car Battery Chargers Work?

Yes, as long as you're using a solar-powered car charger for the intended use, they should work.

Solar battery chargers typically don't have multiple amperage settings, which means they only deliver a small amount of current to the battery.

A solar charger is more beneficial for maintaining a car battery charge than a fully charged one.

How Long Does It Take to Charge?

Standard solar panels will take 4 to 12 hours to fully charge.

The average for medium to high wattage panels is between 6 and 8 hours of direct or mostly bright light charge.

The charging time will be close to about 12 or even 14 hours during winter, cloudy weather, or other low light conditions.

How long does it take to charge a car battery?

Can a Solar Car Battery Charger Charge a Dead Car Battery?

The solar car battery charger will only be able to charge a partially dead battery.

They are not intended for this purpose.

Solar-powered car battery chargers are trickle chargers, meaning they charge at a rate equal to the self-discharge rate. This allows the battery always to be fully charged at the right level. However, do not use the battery while charging because trickle charging cannot keep the battery charged while "in use."

There may be some models specifically designed to charge car batteries fully, but these are less common and will use a different form of charging known as floating charging.

4. Learn The Voltage for Car Batteries and Chargers

12 volts is the standard for car batteries.

Each battery has six cells with a voltage of 2.1. When the battery is fully charged, this equates to a voltage of 12.6 volts in the battery.

If the voltage in a solar car battery drops, even from 0.6 to 12.0, there will be a 75% difference in capacity. Power reduced from 100% to 25%.

At 12.4 volts, the solar car battery is charged 75%, and 12.2 means the voltage is 50% charged. That means you can think about your battery being charged if it is at 12.4 volts or more but discharged and needs recharging if it is even at 12.39 volts or less.

You can check your car battery voltage by connecting a voltmeter to the battery.

Voltage 13.5 to 14.5 volts or more must be registered while the vehicle is idling. If it doesn't produce this, the alternator may malfunction and should be checked at an auto parts store.

5. What are the Benefits of the Best Solar Car Battery Charger?

There are plenty of reasons to use the best solar car battery charger instead of a standard wall outlet charger. They save money, protect the environment, and even extend the life of your car battery.

  • Environmentally friendly charging

The first thing we would like to note about using a solar-powered battery charger over a standard electric model is that solar is eco-friendly.

They use energy from sunlight and are converted by solar cells into electricity that can charge your car's battery.

Solar power is an often overlooked renewable energy source, but these chargers can help everyone do a little better.

  • Extend the life and health of your car battery

Solar battery chargers provide a steady charging current, even if they don't deliver the same amount of power as some standard electric chargers.

They are less likely to overcharge your battery, which means they will extend the life of your car battery.

  • Simple to use

The solar car charger is incredibly easy to use, which makes it a winner in my book. An older adult, teenager, or father with three children in the back seat can get a 12-volt solar car battery charger and use it much easier than a standard electric charger.

You don't need to calculate amperage and voltage as you would with a wall outlet charger. Instead, use the charger wherever you are.

Also, since solar chargers don't have as much power behind them as outlet chargers, they are much safer for beginners.

The solar car battery is easy to use

The solar car battery is easy to use

Source: Pinterest

  • Convenient and portable

One of the most necessary things about a solar car battery charger is that it allows you to charge your car battery no matter where you are. Need to turn off the lights at home? Unplug the charger. Spot a struggling battery at a campsite in the woods? Again, unplug and charge. You can't do that anywhere with a standard charger.

  • Long-term savings

Finally, solar-powered car battery chargers can be more expensive than standard models, but once you pay that initial cost, you're done.

They don't require any current payments to use them, meaning you save on electricity yearly.


To get the best solar car battery charger, you must consider key factors like performance, voltage, wattage, and whether the panel has the right cables and connectors necessary to charge your car battery.

They're pretty straightforward, so choose brands you trust and models that real users appreciate.

Just remember that most chargers are designed only partially to charge dead batteries. The solar battery charger is for basic charging maintenance and replacement.

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