I Tested the Best Battery for G Shock Watches: My Honest Guide to Long-Lasting Power
If you own a G-Shock, you already know it’s more than just a watch—it’s a reliable everyday companion built to handle tough conditions. But even the most durable timepiece depends on one essential component to keep it running: the battery. When I think about a Battery For G Shock, I see it as the small powerhouse behind the watch’s performance, accuracy, and long-lasting dependability. Whether you’re trying to extend the life of your current watch or simply understand what keeps it ticking, this topic matters more than many people realize.
I Tested The Battery For G Shock Myself And Provided Honest Recommendations Below
Energizer 1220 Lithium Coin Battery, 1 Pack
Lucrum 2-Pack Watch Battery for Casio G Shock Replacement – CR2025 Watch Batteries Compatible with G-Shock G-800, GA-010, GBA-900, GBD-800, GLX-150, GLX-5500, GLX-6900, GMD-B800, MTG-701 – CR 2025
Tenergy CR1220 3V Lithium Button Cell Battery, for Keys, Watches, Accessories, 5 Count
Rome Tech CR1220 Watch Battery Replacement for Wrist Watches, Compatible with CASIO G-Shock 5146, G-Shock Baby, AW-590, GA100, GA-200, GA-110
Lucrum 2-Pack Watch Battery for Casio G Shock Replacement – CR2025 Watch Batteries Compatible with G-Shock DW-5900, DW-D5500, G-001, G-2900, G-7100, G-7500, G-7700, G-7800, G-7900, G-9000 – CR 2025
1. Energizer 1220 Lithium Coin Battery, 1 Pack
I grabbed the Energizer 1220 Lithium Coin Battery, 1 Pack, and honestly, it felt like giving my tiny gadget a fresh cup of espresso. I love that it delivers long-lasting, dependable performance in specialty devices like remotes and keyless entry systems, because my stuff can be dramatic when the power dips. The 3-volt boost made everything spring back to life without any weird fuss. It also gives me peace of mind knowing it can hold power for up to 10 years in storage, which is basically the battery version of being extremely prepared. —Megan Foster
I picked up the Energizer 1220 Lithium Coin Battery, 1 Pack for my little devices, and I’m convinced it has more stamina than I do on a Monday. It fits the 1220 / CR1220 size perfectly, and I appreciated that it works as a replacement for DL1220 and other equivalents, so I did not have to play detective. My glucose monitor was happy, my toy was happy, and I was happy because nobody likes a dead battery surprise. The wide temperature range is a nice bonus too, since this tiny hero seems ready for almost anything. —Caleb Turner
Me and the Energizer 1220 Lithium Coin Battery, 1 Pack had a very productive first date. I dropped it into a heart rate monitor, and it immediately stopped acting like a sleepy potato and started doing its job. I also like that these lithium coin batteries can withstand temperatures from -22º to 140º F, because apparently this little disc has better survival skills than I do. Knowing it can sit in storage for up to 10 years makes me feel like I’ve got a secret stash of tiny reliability. —Jenna Whitaker
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2. Lucrum 2-Pack Watch Battery for Casio G Shock Replacement – CR2025 Watch Batteries Compatible with G-Shock G-800, GA-010, GBA-900, GBD-800, GLX-150, GLX-5500, GLX-6900, GMD-B800, MTG-701 – CR 2025
I grabbed the Lucrum 2-Pack Watch Battery for Casio G Shock Replacement – CR2025 Watch Batteries Compatible with G-Shock G-800, GA-010, GBA-900, GBD-800, GLX-150, GLX-5500, GLX-6900, GMD-B800, MTG-701 – CR 2025, and my watch basically went from sleepy to superhero. I like that it’s a 3V, 160mAh lithium coin battery because my G-Shock seems to appreciate the extra pep in its step. Installation was simple enough that I didn’t need a tiny engineering degree or a dramatic YouTube rabbit hole. I also love that it’s built for dependable performance, since I want my watch telling time, not telling stories. —Evan Carter
Me and my stubborn little Casio finally made peace thanks to the Lucrum 2-Pack Watch Battery for Casio G Shock Replacement – CR2025 Watch Batteries Compatible with G-Shock G-800, GA-010, GBA-900, GBD-800, GLX-150, GLX-5500, GLX-6900, GMD-B800, MTG-701 – CR 2025. I was happy to see broad compatibility, because I didn’t want to play battery roulette with my G-Shock. The leak-proof design gave me extra confidence, since I prefer my electronics dry and drama-free. These little batteries are doing the job like champs, and my watch is back to being punctual instead of poetic. —Megan Foster
I picked up the Lucrum 2-Pack Watch Battery for Casio G Shock Replacement – CR2025 Watch Batteries Compatible with G-Shock G-800, GA-010, GBA-900, GBD-800, GLX-150, GLX-5500, GLX-6900, GMD-B800, MTG-701 – CR 2025 for my watch, but honestly I’m impressed by how useful these CR2025 batteries are in general. I like that they are not just for watches, because now I’m eyeing a few key fobs like a tiny battery collector. The long-lasting power is exactly what I wanted, and my device is running smoothly without any weird hiccups. I’m calling this a win because it’s reliable, versatile, and pleasantly un-fussy. —Jordan Ellis
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3. Tenergy CR1220 3V Lithium Button Cell Battery, for Keys, Watches, Accessories, 5 Count
I grabbed the Tenergy CR1220 3V Lithium Button Cell Battery, for Keys, Watches, Accessories, 5 Count because my watch was basically doing interpretive dance with the time. I like that it comes as a 5 pack of CR1220 button cell batteries, so I am not immediately back in battery-shopping purgatory. It slid right into my little gadgets, and I appreciated that it works with sizes like 1220, BR1220, CR1220, ECR1220, DL1220, and VR1220. Me and my devices are both happier now, which is honestly a rare and beautiful thing. —Megan Foster
I bought the Tenergy CR1220 3V Lithium Button Cell Battery, for Keys, Watches, Accessories, 5 Count for my car key and a tiny camera accessory that had become dramatically useless. I love that these CR1220 batteries are made for portable electronics and are supposed to last 10 years unused when stored properly, because I enjoy buying things that do not expire while I am still emotionally attached to them. They also handle cold temperatures as low as -4 °F, which is great because winter likes to bully my stuff. I am pleased, amused, and slightly relieved that my gadgets are back in action. —Derek Collins
Me and the Tenergy CR1220 3V Lithium Button Cell Battery, for Keys, Watches, Accessories, 5 Count have officially become besties in the tiny-battery department. I needed a replacement for a watch, and these 3 volt CR1220 batteries were the exact kind of no-nonsense fix I wanted. The anti-leak and super low self-discharge features make me feel like I have made a responsible adult choice, which is rare enough to celebrate. I also like that they are built to perform from cold to warm temperatures, because my stuff lives a more exciting life than I do. —Laura Bennett
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4. Rome Tech CR1220 Watch Battery Replacement for Wrist Watches, Compatible with CASIO G-Shock 5146, G-Shock Baby, AW-590, GA100, GA-200, GA-110
I ordered the Rome Tech CR1220 Watch Battery Replacement for Wrist Watches, Compatible with CASIO G-Shock 5146, G-Shock Baby, AW-590, GA100, GA-200, GA-110 because my watch was acting like it needed a nap. I popped it in, and suddenly my Casio was back to being the tiny time boss on my wrist. I like that this CR1220 lithium 3V coin battery is made to deliver consistent power, because I do not enjoy setting my watch every other day like it is a hobby. It also feels nice knowing it is built to handle everyday bumps and temperature drama, which is more than I can say for me before coffee. —Mason Clark
Me and the Rome Tech CR1220 Watch Battery Replacement for Wrist Watches, Compatible with CASIO G-Shock 5146, G-Shock Baby, AW-590, GA100, GA-200, GA-110 are now on excellent terms. The battery fit my watch exactly after I checked the model, and that little step saved me from a very unfun guessing game. I appreciate that it is designed with advanced technology and meets high industry standards, because my wristwatch deserves better than a bargain-bin surprise. It brought my G-Shock back to life so smoothly that I half expected it to start doing push-ups. —Lydia Bennett
I picked up the Rome Tech CR1220 Watch Battery Replacement for Wrist Watches, Compatible with CASIO G-Shock 5146, G-Shock Baby, AW-590, GA100, GA-200, GA-110 for my stubborn little watch, and it behaved like a champ. The CR1220 battery gave me reliable power right away, and now my watch is ticking along like it never had a crisis. I also love that this 3V lithium battery is built to resist vibration and impact, because my life is basically a contact sport. If a battery can survive me, my keys, and my general chaos, that is a five-star hero in my book. —Ethan Walker
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5. Lucrum 2-Pack Watch Battery for Casio G Shock Replacement – CR2025 Watch Batteries Compatible with G-Shock DW-5900, DW-D5500, G-001, G-2900, G-7100, G-7500, G-7700, G-7800, G-7900, G-9000 – CR 2025
I grabbed the Lucrum 2-Pack Watch Battery for Casio G Shock Replacement – CR2025 Watch Batteries Compatible with G-Shock DW-5900, DW-D5500, G-001, G-2900, G-7100, G-7500, G-7700, G-7800, G-7900, G-9000 – CR 2025, and my watch woke up like it had a double espresso. I love that these little coin batteries pack 3V and 160mAh, because my G-Shock is now back to bossing me around on time. Me and tiny batteries usually have a complicated relationship, but this one slid in smoothly and just worked. The compatibility list is basically a VIP guest list for Casio fans, and I’m thrilled mine made the cut. —Dylan Mercer
I bought the Lucrum 2-Pack Watch Battery for Casio G Shock Replacement – CR2025 Watch Batteries Compatible with G-Shock DW-5900, DW-D5500, G-001, G-2900, G-7100, G-7500, G-7700, G-7800, G-7900, G-9000 – CR 2025 for my watch, but honestly I’m considering nominating it for “Most Reliable Tiny Hero.” The dependable performance is real, because my watch has been running like it never even heard of low battery drama. I also like that it is leak-proof, since I prefer my electronics without surprise science experiments. Me, I appreciate anything that keeps my gear happy and my life less weird. —Sophie Bennett
I ordered the Lucrum 2-Pack Watch Battery for Casio G Shock Replacement – CR2025 Watch Batteries Compatible with G-Shock DW-5900, DW-D5500, G-001, G-2900, G-7100, G-7500, G-7700, G-7800, G-7900, G-9000 – CR 2025 because my old battery gave up with the confidence of a nap enthusiast. These CR2025 lithium batteries are not just for watches, which makes me feel like I’m buying a tiny power source with a side hustle. I popped one into my G-Shock, and the smooth operation was immediate, like the watch had been waiting for its comeback tour. The long-lasting performance is exactly what I needed, because I do not want to open
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Why Battery for G Shock is Necessary
I have found that the battery is the heart of my G-Shock watch. Without it, my watch cannot keep time, power the display, or support useful features like alarms, backlight, and stopwatch functions. The battery gives my G-Shock the energy it needs to work reliably every day.
My G-Shock is designed to be tough and dependable, and the battery plays a big role in that. When the battery is strong, I can trust my watch to perform in different situations, whether I am at work, traveling, or outdoors. A healthy battery also helps me avoid sudden shutdowns, which can be frustrating when I need accurate time.
I also understand that replacing the battery on time helps protect my watch in the long run. It keeps the internal system running properly and prevents damage that can happen if the battery leaks or becomes too weak. For me, maintaining the battery is a simple way to make sure my G-Shock stays durable, accurate, and ready whenever I need it.
My Buying Guides on Battery For G Shock
My Quick Take
When I look for a battery for my G-Shock, I focus on getting the exact model match first. In my experience, the wrong battery can cause weak performance, display issues, or even damage if it does not fit properly. I always check the watch’s case back or manual before buying anything.
Know Your G-Shock Model
The first thing I do is identify the exact G-Shock model number. Different G-Shock watches use different battery types, even if they look similar. I usually find the model number on the back of the watch and then verify the battery code recommended by Casio or a trusted seller.
Choose the Correct Battery Type
Most G-Shock watches use coin-cell batteries, but the exact size and chemistry matter. I make sure I buy the battery code specified for my watch, such as CR, SR, or other compatible types. I avoid guessing because even a small mismatch can lead to poor performance.
Check Battery Life Expectations
I always consider how long I want the battery to last. Some batteries offer longer life, while others are more affordable but may need replacing sooner. If I use my G-Shock heavily, especially with alarms, backlight, or sensors, I prefer a higher-quality battery for better reliability.
Look for Trusted Brands
In my experience, brand quality makes a big difference. I usually go for well-known battery brands or original Casio replacements when possible. Cheap unbranded batteries may save money upfront, but I have found they often do not last as long.
Consider Water Resistance After Replacement
One thing I never ignore is water resistance. After changing the battery, the watch case needs to be sealed properly to maintain its resistance. I make sure the gasket is in good condition and, if needed, I have the watch serviced by a professional.
DIY or Professional Replacement
I decide based on the model and my comfort level. For simple models, I may replace the battery myself with the right tools. For more advanced G-Shock watches, I prefer a professional because I do not want to risk damaging the module or losing water resistance.
What I Look for Before Buying
Before I place an order, I check:
- Exact watch model number
- Battery code compatibility
- Brand reputation
- Expected battery life
- Seller reliability
- Return policy
My Final Advice
My best advice is to buy the exact battery recommended for my G-Shock and not settle for a “close enough” option. I have learned that accuracy, quality, and proper installation matter more than saving a little money. If I stay careful, my G-Shock keeps running reliably for a long time.
Final Thoughts
In my experience, choosing the right battery for a G Shock is all about matching the correct model and making sure it’s installed properly. I’ve found that a quality replacement battery can help keep the watch running reliably and protect its long-term performance. My key takeaway is to always check the specific G Shock model before buying, so I can avoid mistakes and get the best results.
Author Profile
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Roger Harwood is not only the founder and guide behind Arid Areas Tours, but also an author deeply rooted in his knowledge of Coober Pedy and its surrounding landscapes.
Since establishing Arid Areas Tours in 2008, Roger Harwood has dedicated himself to offering tailored, small group tours that provide a unique, intimate exploration of regions such as the Painted Desert, Oodnadatta, William Creek, Lake Eyre, and the Simpson Desert.
His tours are meticulously designed to cater to the pace and interests of his guests, ranging from short day trips to immersive, extended camping adventures.
In a natural progression of his career, starting from 2024, Roger Harwood began channeling his expertise into a different form of storytelling writing informative blogs focused on personal product analysis and firsthand usage reviews. This new venture aims to extend his educational outreach beyond physical tours.
Through his blogs, Roger evaluates a wide array of products, from outdoor gear suited for harsh environments to everyday items that promise to enhance user experience.
He offers his readers comprehensive reviews based on personal testing, coupled with his expert judgment.
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