The 6 Best Things About How Do Solar Watches Work?

Last Updated on September 24, 2022 by Luis Cooper

As we sidestep into a new millennium, our understanding of technology becomes fascinating.

Though we regularly communicate with friends and family on our mobile devices, it wasn’t until recently that we have been able to look down at our wrists and see what time it is.

Solar watches generate energy by capturing the energy forfeited during the day and storing it in their batteries. 

You’ve probably seen many posts giving you a basic understanding of how solar watches work or how they work. However, you’ve probably never seen a detailed procedural explanation, which takes some explaining.

Solar watches might seem like a strange topic for a blog.

But the truth is, many consumers are interested in how their watches are powered.

This article is excellent for anyone looking to explore the ins and out of How Do Solar Watches Work?

What is a solar watch?

A solar watch, also known as a photoelectric watch, uses light energy for its work.

The solar watch contains a cell located under the solar watch’s dial.

The function of that cell is to store solar energy and convert light energy into electrical energy.

So the watch takes the solar energy or light, the cell converts it into electrical energy, and that energy is finally stored in a rechargeable battery for further use.

What makes a solar watch different?

Solar watches are unique because of two things.

Solar cells: 

This watch operates from the solar energy it gains from the sun.

So for this purpose, solar cells are installed in them.

Well, I will explain the functioning of solar cells later.


A typical watch’s energy drains so fast.

Their battery life span is usually too short.

Like their battery may drain from complete to empty over time, one must replace the cells or battery to use it again.

While on the other hand, solar cells can capture and use solar energy, extending the watch’s life span.

How does a solar watch work?

How Do Solar Watches Work?

Let’s have a detailed look at the science behind the working of the solar watch.

Solar watches are powered directly by the sun’s light radiation.

It does not simply refer to direct sunshine.

However, your watch must be near a light source to function.

It is not good because the sun often doesn’t come out in winter.

But solar watches also have a solution for this problem.

The solar watches have an extra battery that stores the solar energy and uses that stored energy when there is no light available.

It means that the watch gains solar energy, and the cells convert it into electrical energy and use it for the working of the watch, but the extra power left that is not required for the working of the watch is stored in the battery for future use.

A solar watch is also known as a photoelectric watch.

The working of the solar watch is so easy.

There is not any rocket science present behind its work.

The battery of the solar watch differs significantly from the battery of the quartz watch.

The battery of the solar watch is eco-friendly and rechargeable that can be recharged again and again.

At the same time, the battery used in the quartz watches is called a dry battery, neither eco-friendly nor rechargeable.

The time it takes to charge your solar watch entirely depends on a few factors.

The first factor is the type of light used.

Always remember that sunlight will assess your watch faster than charging your watch with artificial light.

The second factor is the absorption capacity of solar watches.

Different models will have various absorption capacities.

And the last factor is the intensity of the light, a bright and sunny day will recharge your watch faster than a dull and cloudy day.

How accurate are solar watches?

By keeping in view the accuracy of time, solar watches are the most accurate and reliable unless the watch is kept in the dark for a long time.

The reliability and accuracy of the solar watch depend on its recharging ability.

Keep in mind that, like other watches, don’t bring your solar watches near any magnetic field; otherwise, the accuracy of your watch will deteriorate.

Solar watches not only use solar energy for their work but can also operate on artificial lights.

This feature has made solar watches more accurate and reliable.

The factor of accuracy and reliability makes the solar watch one of the top-selling watches in the watch industry.

How do you know the charge level of the solar watch?

Additional functionality is installed in your solar watch that will inform you about the low battery level of your watch.

These watches usually have a visual power level indicator installed, which can be seen through the display of the watch’s dial.

 On the other hand, the other watches don’t operate on solar energy.

The needle may double-tick, or there may be an alteration in the movement of the needle due to the low charging level of the battery.

Do solar watches work at night?

Generally, this is a misconception that the solar watch functions properly and recharges properly just under the solar light.

As mentioned earlier in the article, solar watches may also recharge with artificial light, which takes time to recharge.

Solar watches charge fastly in the sunlight, but they may also set in artificial light, which takes some time.

So if such artificial light is present at night, it will help you recharge your battery but consume a little more time.

It is advisable to go through the manufacturer guide of your solar watch because not all models of solar watches may charge in artificial light.

It depends on the watch’s model or the watch’s manufacturer. So please have a look at the user guide before using it.

How often does a solar watch need a time setting?

It is one of the essential questions in the minds of millions and billions of people.

Solar watch time settings often range from weeks to months, depending on the model and charging period.

Hence every model of the solar watch has different time durations for the time settings.

Still, it all boils down to whether your solar watch receives solar energy consistently or the batteries are in good working order.

You should also set your solar alert if you notice the following conditions: battery leaks, low battery reserve, or worn-out batteries. You will be notified when the watch’s battery is about to drain.

Because there is no universally accepted method for setting solar watches, you must research and comprehend the features of your solar watch.

Hence comparing the time setting duration of the solar watch with the time setting durations of the other watches, the solar watch time doesn’t need to be fixed again and again compared to the other watches.

Pros and cons of using a solar watch:

Pros:  (How Do Solar Watches Work?)

  • Solar watches are environmentally friendly.
  • They can recharge themselves directly from the solar light and hence helps to keep the environment neat and clean.
  • By doing a single charge, you can get a lot of power.
  • You don’t need to charge these watches again and again like the other watches because this watch can last for a long time after a single charge.
  • These watches are very accurate.
  •  The reason behind their accuracy and reliability is already detailed in this article.
  • These watches are small enough to fit into a slim watch casing. 
  • They are not too big, a plus point that makes the people buy them.
  • Solar watches don’t require much maintenance compared to the other watches that require maintenance compared to solar watches.

Cons: (How Do Solar Watches Work?)

  • Solar watches are pretty expensive compared to quartz watches.
  • Quartz watches and other watches are in a range that most people can afford, but this is not the case with solar watches.
  • Solar watches have a lower beat rate as compared to the other watches.


A solar watch is not just distinguished from a quartz watch by its charging technique.

A solar watch’s precision gives it an edge over a quartz watch.

Solar watches are less likely to stop working and provide the wrong time because they continually charge.

Solar watches may operate 24 hours a day, seven days a week, for a longer amount of time than quartz watches.

Solar watches, in a nutshell, are precise and dependable.

They are worthy of consideration in our daily life.

Abuse is unavoidable if the aim of anything is unknown.

We don’t want you to waste your money on a solar watch instead of taking advantage of its features.

We hope this article has given you a better understanding of how a solar look works and answers any queries you may have had.

In this day and age, technology is an investment.

Therefore a solar watch is a wise choice. Don’t worry; a nice solar look doesn’t have to be expensive.

Many high-quality solar watches are available at a reasonable price.

If you have any questions, please ask in the comments below.

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Hi, I'm Luis, the guy behind this site. I love wearing watches, especially ones that look great on small wrists (mine are about 6.3" around). The Watches Geek is dedicated to helping you learn about and buy watches that you will love wearing. I want this website to be the last destination for people to pick the best watches to fit their needs. You can find our unbiased reviews here on Thewatchesgeek.

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