Ultimate Guide to Choosing a Battery for Casio G Shock Watches

Batteries are essential for Casio G-Shock watches to power their various functions, including timekeeping, alarms, backlighting, and other features.

The G-Shock’s robust construction and extensive features demand a reliable power source to ensure consistent performance in diverse conditions. The choice of battery is critical for maintaining the watch’s durability and functionality.

In this article, we will discuss the various types of Casio G Shock batteries and review the five best ones available in the market; we will also go through the various factors to consider before replacing them. Read on to learn more.

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Choosing the Right Battery for Your Casio G Shock Watch

The Casio G Shock watches use a coin or button cell battery; however, the battery varies in size, service life, and energy charge, which are measured in milliampere-hour (mAh), depending on the watch series.

Therefore, If you are using the G shock and do not know which type of battery your watch uses, look at the module number or the watch’s name to make it easier to determine the battery for your watch. Alternatively, refer to the watch’s user manual to determine your specific model’s correct battery type and replacement procedure.

Watch batteries have specific names, including CR1220, CR2016, CR2025, and SR927W, among others named in accordance with the IEC standards. The difference between these batteries is the service life that each battery offers.

The batteries have a service life of 2 to 10 years. However, you should note that several factors can affect the battery life of your watch.

Watches with a high power consumption tend to drain the battery quicker and easier than those with a low power consumption. Watches that operate without a second hand and don’t have a powerful backlight have longer battery life.

There are several ways to extend the battery life of your Casio G Shock watch. Servicing your watch frequently is one of the ways to prolong your battery life. You can also ensure that you store the watch in a place with moderate temperature.

Main Types of Casio G Shock Batteries

G-Shock watches use different types of batteries depending on the model and features. The two main types of batteries most Casio G Shock watches use are the Lithium and Silver Oxide Batteries.

1. Lithium Batteries 

Lithium batteries for watches operate through electrochemical reactions between a lithium-based anode and a cathode, separated by an electrolyte.

This cyclical movement of lithium ions enables lithium batteries to efficiently store and release electrical energy, providing a reliable power source for watches, including those found in G-Shock models.

Lithium batteries are commonly used in G-Shock watches due to their long-lasting power and reliability. These batteries provide stable voltage output over their lifespan, ensuring consistent performance for the watch’s various functions.

2. Silver Oxide Batteries

Silver oxide batteries consist of a silver oxide cathode, a zinc anode, and an alkaline electrolyte. This composition allows them to deliver a steady voltage output throughout their lifespan, ensuring consistent and reliable operation of the watch.

These batteries are another popular choice for G-Shock watches. They offer a high energy density and stable voltage output, making them suitable for powering the watch’s complex features like alarms, countdown timers, and backlighting.

3. Rechargeable Batteries

Some G-Shock models come with rechargeable batteries, allowing users to recharge the watch using solar power or USB charging like the G Shock solar-powered digital watches.

These batteries are eco-friendly and offer the convenience of not needing frequent replacements.

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5 Best Batteries for Casio G Shock Review

As discussed earlier, Choosing a battery for Casio G shock that is compatible with your watch and suits your battery needs is critical.

Here are five quality watch batteries suitable for Casio G shock watches.

1. Energizer Lithium CR2032 Watch Battery (Best Overall)

The Energizer CR 2032 Batteries are reliable coin batteries with a long service life. The batteries are reliable even in extreme temperatures ranging from -22 F to 140 F. They make great replacement batteries for the Casio G shock watches.

They are a consistent and reliable power source for your timepiece watches. You can use the batteries on keyless entry systems and toys.

The lithium batteries last ten years in storage. They are packaged in child-resistant packaging to keep the little ones safe from eating them.

Pros

• The 3V lithium coin batteries perform well in extreme temperatures from -22 F to 140 F.
• They are versatile lithium batteries that can be used on remote, health monitors, toys, and games.
• The coin cell batteries can hold power for up to 10 years in storage.
• They have a child-resistant packaging.

Cons

• The batteries may not be compatible with all Casio G shock watches.

2. Duracell CR2025 3V Lithium Battery (Best Value for Money)

The Duracell CR2025 3V Lithium Battery pack includes two quality and reliable lithium batteries. They are an excellent choice for those looking for a long-lasting power source for their watches. The 3V power lithium batteries provide stable and reliable energy to keep your timepiece running effectively.

They are reliable batteries from a renowned brand that makes quality and reliable products. The batteries are versatile and are suitable for calculators, remote controls, health monitors, and watches.

The batteries are coated with a bitter coating to discourage ingestion by children, making them suitable for households with children and pets.

Pros

• The battery has a steady and constant energy supply.
• They are from a renowned brand that makes quality and reliable products.
• The lithium batteries are versatile and suitable for a wide range of devices.
• The Coin battery comes with child-safe packaging that is hard to open without scissors.
• They offer long-lasting power and can hold power for ten years in storage.

Cons

• The batteries have a sizing confusion.
• The difficult-to-open packaging can be a turn-off for some buyers.

3. Renata G-Shock Battery Replacement for CASIO Watches (Best Premium)

The Renata G-Shock Battery Replacement for CASIO Watches is a reliable battery that is compatible with most G-shock watches.

It provides a steady power supply to ensure that it performs well. The battery is from Renata, a renowned brand that produces quality and reliable products.

The battery can operate smoothly in a wide range of temperatures. The battery has a long shelf life and is very dependable. It is versatile and suitable for small electronic devices such as toys, thermometers, calculators, and watches.

Pros

• The battery is ideal for a wide range of small electronic devices.
• It provides a constant and steady energy flow for smooth operation.
• The Casio watch battery has a long shelf life.
• It is from a renowned brand.
• The battery can operate in a range of temperatures.

Cons

• Pricey.

4. Duracell 395/399 1.5V Silver Oxide Button Battery

The Duracell 395/399 1.5V Silver Oxide Button Battery is a versatile lithium battery. It can used by a wide range of electronic devices. The battery provides a high volumetric energy density that is enough energy to operate smoothly.

The silver button batteries have a good shelf life and are reliable over a wide temperature range. They have dependable and constant power discharge voltage.

The battery is suitable for small devices such as thermometers, watches, and calculators.

Pros

• They deliver energy at high current drains, making them ideal for timepiece watches.
• The silver oxide battery has a stable discharge voltage.
• They have a good shelf life of 3 years.
• The batteries can operate effectively over a wide temperature.
• They are very versatile and are ideal for devices such as medical devices, watches, and calculators.

Cons

• Drains relatively faster than other batteries

5. Renata Watch Battery Swiss Made 399 1.5V (Best Budget)

The Renata Watch Battery Swiss Made 399 are very dependable mercury batteries. They offer a dedicated high and low drain to your watches and miniature devices for optimum performance.

The batteries utilize leak-proof sealing technology and high-capacity retaining to prevent leakages. They come in an easy-to-peel-off flap packaging for easy removal.

The packaging features pre-perforation for easy separate blister packs.

Pros

• The batteries are 100% mercury-free.
• They provide a steadfast high and low drain for optimal performance for watches.
• The Swiss-made batteries are made using erudite leak-proof sealing technology for high-capacity retention.
• They feature a peel-off flap package for easy removal.
• The pre-perforated packaging makes it easy to separate blister packs.

Cons

• The battery may not be compatible with some Casio G shock watches.

Related: Guide to Choosing the Best Non-G-Shock Casio Watch

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Buying Guide: Tips for Selecting the Best Battery for Casio G Shock

Other than the compatibility of the battery to your watch, there are other crucial factors to help you choose the best battery for Casio G shock. Here are some helpful tips to guide you in your quest for the best battery for Casio G shock.

1. Price

The best Casio G shock batteries vary in price depending on their service life. Some batteries are cheaper, while others are more expensive. A budget will help you find a suitable battery for your watch.

A budget will help you prevent going out of budget and make searching for the best Casio G shock battery easier.

2. Ease of Disposal

If you are conscious about the environment and you are all about conserving the environment, you should ensure that the best battery for the Casio G Shock you choose is easy to dispose of. Watch batteries are made using chemicals harmful to humans, animals, and the surroundings.

Some watch batteries can be recycled even when they have leaks. Watch batteries such as silver oxide batteries are valuable and can be scrapped and sold to recycling companies when in sufficient quantity.

Watch batteries should be disposed of correctly or recycled to keep the environment safe and clean.

3. Type of battery

As discussed earlier, most Casio G Shock compatible watch batteries come in the form of lithium, silver oxide, and solar/rechargeable batteries.

a. Lithium batteries are small and reliable watch batteries with a long service life. These batteries drain fast, especially if the watch has a backlight and other extra features.

b. Silver oxide batteries are also readily available and feature a high energy-to-weight ratio. They have a longer service life and are more expensive since they have a sliver.

c. Solar/rechargeable batteries have the best service life among available watch battery types. They get their power from the sun and remain charged when exposed to the sun.

The other battery types in the market that we don’t usually recommend are the Alkaline and Mercury batteries.

d. Alkaline batteries are common and affordable. However, the batteries have an unreliable voltage that can affect your watch’s accuracy; some alkaline batteries are even prone to exploding.

e. Mercury batteries have the same service life as alkaline batteries and are more consistent. However, Mercury was banned from being used in batteries in the U.S.A. under the Mercury-Containing and Rechargeable Battery Management Act of 1996.

Related: Casio Watch for Ladies | 5 Stunning Options

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FAQs

Here are some frequently asked questions (FAQs) about the best battery for Casio G Shock watches:

1. What type of battery does my Casio G Shock watch use?

Depending on the model, Casio G Shock watches typically use coin cell batteries, specifically silver oxide or lithium batteries.

2. How do I know which battery is best for my Casio G Shock watch?

Refer to the user manual or check the model number of your G Shock watch to determine the recommended battery type.

3. How often do I need to replace the battery in my Casio G Shock watch?

The frequency of battery replacement depends on factors such as the model of your G Shock watch, usage patterns, and the type of battery used.

Generally, silver oxide and lithium batteries have a service life of 2 to 6 years; however, it’s recommended that the battery be replaced as soon as signs of low power, such as dim backlighting or irregular timekeeping, are observed.

4. Can I use rechargeable batteries in my Casio G Shock watch?

While rechargeable batteries offer eco-friendly benefits, they may not provide the same level of performance and reliability as non-rechargeable silver oxide or lithium batteries.

Additionally, not all G Shock watch models are compatible with rechargeable batteries. Following the manufacturer’s recommendations for battery type and replacement is essential.

5. How can I extend the battery life of my Casio G Shock watch?

To maximize battery life, avoid using high-power-consuming features unnecessarily, such as continuous backlighting or alarms.

Secondly, store your G Shock watch in moderate temperatures (18-20 degrees Celsius or 64-70 degrees Fahrenheit) and have it serviced regularly by a professional to ensure optimal performance and longevity of the battery.

Related: Casio G-Shock for Small Wrists: Best Models Reviewed

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Conclusion

The best battery for Casio G shock should be reliable and effective in different temperatures. There are many watch batteries available on the market. In this article, we focused on lithium batteries. If you are looking for solar-powered batteries, this article is not for you.

Last update on 2026-02-20 / Affiliate links / Images from Amazon Product Advertising API