How long do Casio solar watch batteries last?

Among the few solar watch manufacturing Brands, the Casio is one of the most famous that provides superb solar series watches. These solar-powered timepieces are not only endurable but also long-lasting.

Therefore, nothing can beat the Casio solar one whenever it comes to having a durable and long-lasting solar-powered watch.

Solar Inverter
Solar Inverter

However, depending on the Casio watch modes, your usage of the watch, the lifespan of your watch battery varies. Well, to know more precisely of How long do Casio solar watch batteries last? – let’s go through the article.

How long does your Casio solar watch battery last?

So, before planning to have a Casio solar watch, you may wonder how long a Casio solar watch battery lasts? All right, in short, the battery of a Casio solar watch usually lasts for 10 years.Opens in a new tab. Yet, if you use the watch with proper care, it may last about 15-20 years.

The Casio solar watch comes with an internal rechargeable battery that is solar-powered (Do Eco-Drive Solar watches have batteries?)Opens in a new tab.. When manufacturing, they use Tough Solar TechnologyOpens in a new tab. in their solar series watch models.

Due to having this technology, the solar panel of the watch captures power from the sun, and after that, this light power is converted into electrical energy. And then, it recharges the battery to run the watch.

So, if you need to recharge your watch battery, all you need to do is expose your Casio solar watch to sunlight. And it will be automatically charged.

Moreover, these solar watches require only a few hours of direct exposure to sunlight to fully the solar-powered rechargeable battery. Once they are fully charged, they will last for several months without further exposure to light.

In fact, this solar technology makes the Casio solar watch more long-lasting. Not only that but also,o this solar watch seems like a maintenance-free watch. Depending on the models, they require little to zero battery maintenance.

Therefore, you don’t need to replace or change the rechargeable battery of your Casio solar watch for quite a long time.

But, according to Casio, the capacitor of their solar watches is a chemical device, so you should replace the battery after 10 years of usage. So, it can perform best and deliver you the most accurate time.

Besides, it is recommended to you that you should keep your Casio solar-powered watch in a dry, cool, and clean environment where the storing area is also oxygen-free.

By storing your watch in such an environment, you can have your watch year after year without facing any battery issues.

Here, I have provided you a comparison chart depending on the battery life of various Casio solar model watches. So, it is easy for you to know about the watches’ lifespan and choose the best one from them.

Watches nameBattery TypeThe Lifespan of the BatteryApproximate Battery LifePrice
Casio Men’s G-Shock Solar Powered Stainless-Steel WatchRechargeable battery10 years10 months-without further exposure to sunlight$274.98 on Amazon
Casio Men’s G-Shock GW-9400 Rangeman Solar Powered Stainless-Steel WatchRechargeable battery8-10 years7 months- without further exposure to sunlight$239.96 on Amazon
Casio Men’s Pathfinder Solar Powered Sport WatchRechargeable battery7 years6 months- without further exposure to sunlight$150.99 on Amazon
Casio Men’s PRO TREK Solar Powered Stainless-Steel Quartz WatchRechargeable battery7-10 years6 months- without further exposure to sunlight$237.30 on Amazon

Can you replace a Casio solar-powered watch battery?

Yes, of course, you can replace your Casio solar-powered watch battery. The reason is although they provide a weatherproof, endurable, and zero-maintenance battery, however, sometimes, your watch battery may become depleted, and your watch stops ticking.

Besides, to ensure its best working performance and avoid unnecessary battery depleting issues, the manufacturer always recommends replacing the capacitor of the battery after 10 years.

Well, if you have to replace your watch battery on your own and you want a direction on how to replaceOpens in a new tab. it, here are some steps you need to follow-

  • First, turn your watch back and then remove the back plastic cover by unscrewing the small screws with the help of a screwdriver.
  • Find the metal plate of the watch and remove it that is placed directly under the plastic cover. After that, you need to remove the rubber protector using your finger so you can find the metal battery compartment of your solar watch.
  • Then, find the existing Casio rechargeable battery and remove it from the battery compartment using tweezers.
  • And finally, place the new battery into the battery compartment and close the watch case by replacing the plastic cover again. Here, before closing the case, ensure that your watch is working perfectly.

To understand the battery replacing steps easily, follow the video of the easy hacks.

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Final thought

So, in this article, I have tried to inform you as much as possible about the lifespan of the Casio solar battery. Hopefully, now you have found your answer to the question of How long do Casio solar watch batteries last? (what about the Seiko solar watch )Opens in a new tab.

Durability is the best thing that you can expect from a Casio solar-powered watch. It doesn’t matter if you use your watch very minimally or your everyday use; this Casio solar timepiece provides you longer battery life.

Therefore, you don’t need to worry about its battery replacing as it doesn’t require watch maintenance at all.


I’m Matt, a computer and electronic embedded system developer. Currently, working as an electronic engineer. In my leisure time, I do love to blog about technology stuff. Specially, new advance high tech devices. Portable solar systems are one of topic that I love to investigate. They are becoming more powerful day by day which keep me alert.

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