Do Eco-Drive Solar-powered watches have batteries?

By Matthew Joseph Nandirio •  Updated: 08/25/21 •  5 min read

The thing that makes the solar watch so popular is its solar technology. And, by using the proprietary solar technology, the brand Citizens manufacture their incredible Eco-Drive solar-powered watch.

So, as the name implies, this type of solar watch usually gets charged by capturing sunlight. Therefore, it doesn’t have an actual battery as every analog or smartwatch has. Sounds pretty interesting.

Solar Inverter
Solar Inverter

Well, by now, maybe you are confused. If they don’t have batteries, how can they get charged?

All right, don’t be panicked! Here in this article, I will let you know Do Eco-Drive watches have batteries? And also, if they haven’t an actual one, how have they been charged without batteries?

So, to know more, go through the article.

Do the Citizen Eco-Drive solar watches need new batteries?

Well, in short, the Citizen Eco-Drive solar watches don’t need new batteries. These solar watches are manufactured with light-powered technology; they have solar rechargeable cells instead of the traditional silver oxide battery.

The solar cells are also referred to as secondary rechargeable batteries, according to Citizen’s manual. These rechargeable cells are usually mounted under the translucent dial of your watch.

Therefore, the light from any light source, whether natural or artificial, passes through the dial and is captured by the solar cells.

And after capturing the light energy, the solar cells convert it to electrical energy with the help of its solar conversion panel. So, your Eco-Drive watch can run well. Not only that, but also, they store the converted light energy to run all the features and functions of your watch.

Thus, you really don’t need to be tense if you left your Eco-Drive watch in a dark drawer for a long time. However, it is recommended that you shouldn’t keep your watch in the dark condition for more than 6 months.

This is because the stored energy keeps running the watch well for up to 6 months, and after that, you have to recharge it under the light.

So, to sum up, these rechargeable cells keep your solar watch always charging, and the converted energy keeps the watch always running to deliver optimal performance.

Therefore, it doesn’t need a battery after all, and also, you don’t have to worry about replacing a new battery into your Eco-Drive watch ever.

However, to ensure optimal working performance, the Citizen’s recommends that you change or replace the capacitor after 10 years of regular usage of your watch. So, it can efficiently convert the light into power to run your solar-powered watch.

Besides, you are also recommended to do regular movement maintenance of your Eco-Drive watch, such as replacing your watch-gasket, preservation of the watches’ water-resistance quality, etc.

By doing so, you can have this Eco-Drive solar watch for a long time. And also, surprisingly, the solar cells or capacitors of your watch will last up to 40 years.

Not only that, but also the original charge capacity of the capacitor will retain up to 80% even after 20 years of usage.

So, overall, the highly specialized rechargeable cells are far better than the traditional batteries that help you have your timepiece year after year.

How long does the battery last in your Citizen Eco-Drive watch?

According to Citizen, a Citizen Eco-Drive watch battery lasts well for quite a long time, mostly up to 10 years. However, with proper care, you can have it for more than a decade.

As I said before, the Citizen Eco-Drive watch (how long Citizen Eco-Drive watch last?) uses light-powered proprietary technology. So, the type of battery commonly used in watches is not used in this solar-powered watch.

In fact, they possess no regular battery rather;, they use solar cells. Combining solar cells and secondary batteries, they charge the watch with electrical energy converted from light sources.

Besides, the power save function of the watch stores the energy to run the timepiece later. Therefore, since this solar technology always keeps your watch charged, the watch’s battery doesn’t run out easily.

As a result, it lasts a long time, and you don’t need to replace the rechargeable battery at a regular interval unless you have other depleted issues with changing.

Moreover, as the solar cells can retain their original capacity up to 80%, the probability of failing these rechargeable cells is highly unusual.

However, the problem will only occur when the charge capacity of the watch is at a very low level. This will cause your Eco-Drive watch to run too slow or stop working.

Well, to get rid of this issue, this watch features a low-charge activation function. So, overall, there is nothing to worry about. Yet, if you don’t notice the warning and leave your watch uncharged for many days, like up to 6 months, it may stop ticking in dark conditions.

If so, you need to immediately put your watch directly under sunlight and fully charge it. This is because exposure to light helps you to get back your watch in ticking condition.

Final thought

So, finally, your confusion about Do Eco-Drive Solar-powered watches have batteries? Has been cleared in this article.

The Citizen Eco-Drive watch features the most developed power generating and power reserving system than other brands of solar watch. The energy provider of this solar watch is mainly the solar rechargeable cells and the solar conversion panels, which indicates that it doesn’t need a battery.

And, this feature makes the Eco-Drive a long-lasting and durable watch. So, if you plan to have a solar watch with a longer lifespan, you should grab the Citizen Eco-Drive timepiece without any hesitation.

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Matthew Joseph Nandirio

Matthew Joseph Nandirio is the Founder of walkingsolar. After graduating from the University of Houston in 2002, matt started working as an electrical and electronic engineer for several multi-national solar energy companies. He has a wide range of experiences including solar system requirement analysis, planning, maintaining, debugging and even solar device development through research. He now shares his 20 years of expertise through his articles on the walkingsolar website. Further, he is also the author of two books on Solar Technology, “Solar Power for Villages” and “DIY Solar System for Dummies”.