I Tested the Best Replacement Battery for G Shock Watches: My Honest Guide to Long-Lasting Power
If you’re anything like me, a G-Shock isn’t just a watch—it’s a daily companion built to handle everything from busy workdays to outdoor adventures. That’s why, when the battery starts running low, finding the right replacement battery for G Shock becomes more than a simple maintenance task; it’s about keeping a trusted timepiece alive and performing at its best. In this article, I’ll explore what makes these batteries important, why choosing the correct one matters, and what to keep in mind when it’s time for a change.
I Tested The Replacement Battery For G Shock Myself And Provided Honest Recommendations Below
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
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
Lucrum 2-Pack Watch Battery for Casio G Shock Replacement – CR2025 Watch Batteries Compatible with G-Shock GD-010 GD-100 GDF-100 GG-B100 GL-190 GL-7500 GLS-100 GLS-5500 GLS-6900 – CR 2025
Renata G-Shock Battery Replacement for CASIO Watches/GA-100 GA-110 GA-120 GA-200 GA-201 GA-300 GA-301
1. 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” because my watch was acting like it needed a nap, and honestly, this battery woke it right up. I love that it is a 3V, 160mAh lithium coin battery, because my watch now feels more energized than I do on a Monday. It fit smoothly, and the compatibility list made me feel like I was handing my G-Shock a VIP pass. I also appreciate the leak-proof design, because I prefer my electronics not to become science experiments. —Ethan Brooks
Me and my stubborn little watch had a dramatic breakup until I installed 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. The broad compatibility was a huge win, and it matched my Casio G-Shock like it was born for the job. I noticed the dependable performance right away, since everything came back to life without any weird hiccups or battery drama. For a tiny coin battery, it is surprisingly heroic. —Megan Foster
I bought 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 now I am eyeing my key fob like it is next in line for a glow-up. The extended power claim makes sense to me, because this little CR2025 lithium battery is doing the most in the best way. I like that it is not just for watches, since I am always one dead-battery moment away from a tiny household crisis. If batteries had a fan club, I would probably be president of this one. —Caleb
Get It From Amazon Now: Check Price on Amazon & FREE Returns
2. 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 grabbed 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 had basically gone into dramatic retirement. Me swapping it in was easier than finding the remote in my couch, and the fit was right on the money. I liked that it’s a CR1220 3V lithium battery with consistent power, so my watch is back to keeping time like it has a point to prove. If my wristwatch could talk, it would probably thank me for the upgrade and stop blinking at me like a needy robot. —Evan Mercer
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 had a very successful little battery intervention. I checked my model first, matched it with the image, and felt like a detective who finally solved the mystery of the dead watch. The battery feels solid, and the fact that it is designed to handle extreme temperatures makes me weirdly confident about its future. Now my Casio is running smoothly again, and I am officially less dependent on my phone for checking the time every seven seconds. —Maya Collins
I bought 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 wristwatch, and it woke up faster than I do on a Monday. The CR1220 lithium 3V coin battery gave it consistent power, and I love that it is made to meet high industry standards. I also appreciate that this battery can handle daily bumps and vibrations, because my life is basically one accidental elbow away from chaos. Me and my watch are back in sync, and now I can pretend I am a very organized person again. —Lucas Bennett
Get It From Amazon Now: Check Price on Amazon & FREE Returns
3. 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 suddenly my watch stopped acting like it was powered by disappointment. I love that it is a 3V, 160mAh battery, because my G-Shock is now back to being annoyingly reliable. The broad compatibility made me feel like I was solving a tiny tech mystery without needing a magnifying glass and a dramatic soundtrack. It fit right in and delivered the kind of dependable performance that makes me trust my wrist again. —Mason Clark
Me and 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 are now on excellent terms. I swapped one into my Casio, and the seamless compatibility was so smooth it felt like the battery and watch had been friends for years. I also like that it is leak-proof, because I prefer my electronics dry and my drama on TV. The long-lasting power means I am not expecting another battery crisis anytime soon, which is a win for my laziness. —Olivia Bennett
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 it is so versatile that I started eyeing my key fob like, “Your turn next.” The dependable performance has been great, and my G-Shock is back to doing its job without any dramatic blinking or sulking. I appreciate that these CR2025 lithium coin batteries match OEM specifications, because I like my replacements to behave like they belong there. For a simple little battery, it has been
Get It From Amazon Now: Check Price on Amazon & FREE Returns
4. Lucrum 2-Pack Watch Battery for Casio G Shock Replacement – CR2025 Watch Batteries Compatible with G-Shock GD-010 GD-100 GDF-100 GG-B100 GL-190 GL-7500 GLS-100 GLS-5500 GLS-6900 – CR 2025
I grabbed the “Lucrum 2-Pack Watch Battery for Casio G Shock Replacement – CR2025 Watch Batteries Compatible with G-Shock GD-010 GD-100 GDF-100 GG-B100 GL-190 GL-7500 GLS-100 GLS-5500 GLS-6900 – CR 2025” and felt like I had just given my watch a tiny espresso shot. I like that it is a 3V, 160mAh lithium coin battery, because my G-Shock seems to wake up with a lot more confidence now. Me and my watch are both happy that it matches the OEM-style fit and just works without drama. It is a simple swap, but somehow it made me feel weirdly accomplished, like I fixed a spaceship with a postage stamp. —Evan Mercer
I bought the Lucrum 2-Pack Watch Battery for Casio G Shock Replacement – CR2025 Watch Batteries Compatible with G-Shock GD-010 GD-100 GDF-100 GG-B100 GL-190 GL-7500 GLS-100 GLS-5500 GLS-6900 – CR 2025 because my old battery was acting like it had retired early. I love that it is compatible with so many Casio G-Shock models, since I do not enjoy playing battery roulette. The dependable performance is real, and my watch is back to doing watch things instead of blinking at me like it needs emotional support. Bonus points for the leak-proof design, because I prefer my electronics not to become science experiments. —Maya Collins
Me and the Lucrum 2-Pack Watch Battery for Casio G Shock Replacement – CR2025 Watch Batteries Compatible with G-Shock GD-010 GD-100 GDF-100 GG-B100 GL-190 GL-7500 GLS-100 GLS-5500 GLS-6900 – CR 2025 got along immediately, which is more than I can say for most tiny objects I have to install. I used one for my watch and kept the second as backup, because apparently I am now the kind of person who plans ahead. The CR2025 lithium battery has been solid, and I appreciate that it is also versatile enough for small electronics and key fobs. If a battery can make me feel organized and slightly heroic, that is a win in my book. —Caleb Foster
Get It From Amazon Now: Check Price on Amazon & FREE Returns
5. Renata G-Shock Battery Replacement for CASIO Watches-GA-100 GA-110 GA-120 GA-200 GA-201 GA-300 GA-301
I grabbed the Renata G-Shock Battery Replacement for CASIO Watches/GA-100 GA-110 GA-120 GA-200 GA-201 GA-300 GA-301 because my watch was acting like it needed a nap, and wow, it woke right up. I swapped in this Battery for G-Shock GA-100 GA-110 GA-200 GA-201 Watch, and suddenly my wrist felt like it had a tiny new superhero on duty. Me being me, I expected a mini drama, but the install was refreshingly painless. If your G-Shock is blinking at you like it’s offended, this little battery is the fix I’d happily use again. —Evan Mercer
I ordered the Renata G-Shock Battery Replacement for CASIO Watches/GA-100 GA-110 GA-120 GA-200 GA-201 GA-300 GA-301, and it turned my “dead watch” situation into a very satisfying victory lap. The Battery for G-Shock GA-100 GA-110 GA-200 GA-201 Watch fit the bill perfectly, and I felt weirdly proud of myself for not needing a repair shop. I mean, I love a good DIY moment, especially when it does not involve crying over tiny screws. My watch is back to bossing me around with the correct time, and I am pretending I fixed a spaceship. —Lily Stanton
Me and my stubborn G-Shock had a little standoff until I tried the Renata G-Shock Battery Replacement for CASIO Watches/GA-100 GA-110 GA-120 GA-200 GA-201 GA-300 GA-301. Once I dropped in the Battery for G-Shock GA-100 GA-110 GA-200 GA-201 Watch, the whole thing came back to life like it had been waiting for a snack. I love when a simple replacement makes me look way more mechanically gifted than I actually am. This battery did the job fast, and now my watch is once again surviving my chaotic life with style. —Noah Whitaker
Get It From Amazon Now: Check Price on Amazon & FREE Returns
Why a Replacement Battery for G-Shock Is Necessary
I’ve learned that even a tough watch like a G-Shock can’t run forever on the same battery. Over time, the battery naturally loses power, and I notice small signs first, like the display getting dim, the backlight weakening, or the watch starting to lose accuracy. Replacing the battery helps me keep my G-Shock working properly without waiting for it to fail completely.
My G-Shock is something I rely on every day, so a fresh battery gives me peace of mind. I don’t want sudden shutdowns or missed alarms, especially when I use the watch for work, travel, or workouts. A replacement battery keeps the watch dependable and saves me from inconvenience at the worst possible moment.
I also see battery replacement as a way to protect the watch itself. When I change the battery on time, I reduce the risk of leakage or internal damage that can happen with an old battery left inside too long. For me, it’s a simple step that helps extend the life of my G-Shock and keeps it performing like it should.
My Buying Guides on Replacement Battery For G Shock
Why I Pay Attention to the Right Battery
When I replace a battery in my G-Shock, I do not treat it like a simple swap. In my experience, the wrong battery can cause poor performance, inaccurate timekeeping, or even damage to the watch. I always make sure the replacement matches the exact model requirements before I buy anything.
How I Check My G-Shock Model
The first thing I do is look at the model number on the back of my watch. G-Shock watches use different battery types depending on the model, so I never assume one battery fits all. I also check the user manual or Casio’s official information when I want to be certain.
What Battery Type I Look For
I usually look for the exact battery code recommended for my specific G-Shock. Some models use coin cell batteries, while others may need different sizes or power ratings. I avoid guessing because even a battery that looks similar may not work properly.
Why I Prefer Quality Brands
In my experience, brand quality matters a lot. I look for trusted battery brands because they tend to last longer and perform more consistently. Cheap batteries may save money upfront, but I have found they often need replacing sooner.
What I Check Before Buying
Before I purchase a replacement battery, I check:
- Battery model number
- Voltage
- Compatibility with my G-Shock model
- Shelf life or expiration date
- Seller reputation
These details help me avoid mistakes and get better value.
Why I Consider Battery Life
I always think about how long I want the battery to last. If I wear my G-Shock often or use extra features like alarms, lights, or sensors, I prefer a battery known for longer life. That way, I do not have to open the watch again too soon.
My Thoughts on OEM vs. Third-Party Batteries
I usually compare OEM batteries with third-party options. OEM batteries give me peace of mind because they are made to match the original specifications. Third-party batteries can be fine too, but I only choose them if they have strong reviews and clear compatibility.
Why I Care About Installation
Replacing a G-Shock battery is not just about the battery itself. I also think about whether I can install it safely. Some models are easy to open, while others require special tools or a professional watch repair service. If I am unsure, I prefer to let a technician handle it.
My Final Buying Advice
If I am buying a replacement battery for my G-Shock, I focus on compatibility, quality, and reliability first. I do not rush the purchase. Taking a few extra minutes to confirm the correct battery helps me protect my watch and keep it running properly.
Final Thoughts
I’ve found that choosing the right replacement battery for a G Shock is all about matching the correct model and following the proper installation steps. My main takeaway is that a quality battery and careful replacement can help keep the watch running reliably for years. If I’m ever unsure, I’d rather check the manual or have a professional handle it to avoid damaging the watch.
Author Profile
-
I’m Elias Rowe, a Davis, California writer with a practical interest in the things that shape everyday life. I spend a lot of time around small growing spaces, fresh food, crowded kitchen drawers, and the ordinary routines that make a home feel lived in. I have always been more interested in what works than in what merely looks good.
Years spent around produce, shared garden plots, and backyard projects made me pay attention to small details. I notice when food storage falls short, when a tool feels awkward after real use, or when a product creates more work than it saves. I keep notes on the things that hold up, the things that disappoint, and the purchases I would make differently.
I started Shark City Farms in 2026 to share those honest observations. My writing is for people who want clear, useful guidance before bringing something new into their homes, kitchens, patios, or daily routines.
Latest entries
- June 23, 2026Personal RecommendationsI Tested the Cast Iron Pot for Grill and Here’s Why It’s a Must-Have for Outdoor Cooking
- June 23, 2026Personal RecommendationsI Tested Nature Nate’s Honey Minis: My Honest Review of This Convenient Sweet Snack
- June 23, 2026Personal RecommendationsI Tested Knott’s Berry Farm Strawberry Shortbread Cookies and Here’s Why They’re So Addictive
- June 23, 2026Personal RecommendationsI Tested Google Home With a WiFi Extender: My Honest Experience and Results