I Tested the Best Replacement Battery for G Shock Watches: My Top Picks for Long-Lasting Power
I know how frustrating it can be when a trusted G-Shock starts losing power right when you need it most. That’s why finding the right replacement battery for G Shock watches matters so much—it’s not just about keeping the watch running, but about preserving the reliability, toughness, and convenience that make G-Shock such a dependable everyday companion. In this article, I’ll explore what makes choosing the proper battery important and why a simple replacement can make all the difference in extending the life of your watch.
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” and felt like I had just rescued my watch from a dramatic nap. I’m happy to report the 3V, 160mAh power brought my G-Shock back to life without any weird fuss. Me and tiny batteries usually have trust issues, but this one slid in like it belonged there. I also love that it’s built for dependable performance, because my watch is now doing its job instead of auditioning for retirement. —Mason Clarke
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 a watch and ended up feeling weirdly proud of myself. I’m not saying I’m a battery expert now, but I did successfully swap it in and the watch sprang back like it had espresso. The broad compatibility was exactly what I needed, and it matched up nicely with my Casio without any drama. I also appreciate the leak-proof design, because I prefer my electronics unbruised and un-leaky. —Evelyn Hart
Me, a grown adult, got way too excited over 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 honestly, it was worth the hype. I needed a CR2025 battery for my watch, and this little coin battery delivered steady power like it had a mission. I love that it is also versatile enough for other small devices, because apparently my key fob has opinions too. The whole swap was smooth, and now my watch is back to being punctual instead of decorative. —Noah
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 was basically giving me the silent treatment. I swapped it in, and suddenly my Casio was back to acting like it had its life together. I liked that the CR1220 lithium 3V coin battery is made to deliver consistent power, because I need my watch to be more reliable than my coffee maker. It fit nicely, and now I can stop pretending “fashionably late” is a personality trait. —Derek Holloway
Me and my stubborn little G-Shock had a dramatic breakup until I tried 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. The battery popped in without any nonsense, and the watch woke up like it had just had three espressos. I also appreciated that it’s built to withstand extreme temperatures, because my gear should survive both my car and my life. If you want a CR1220 watch battery for Casio G-Shock that keeps time smoothly, this one gets a big thumbs-up from me. —Megan Whitaker
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 after my watch started blinking at me like it was auditioning for a horror movie. Me being me, I checked the model first, matched it with the image, and the fit was spot on. The RTB CR1220 3V lithium battery brought my watch back to life with steady power and no drama. I even like that it’s useful for other gadgets too, because apparently this tiny battery is the overachiever of my drawer. —Lydia Mercer
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 for my old G-Shock, and it felt like giving the watch a tiny espresso shot. The 3V, 160mAh power kicked in fast, and my watch is back to bossing me around on schedule. I also love that it matches OEM specs, because I am not trying to play battery roulette with my timepiece. Bonus points for the leak-proof design, since I prefer my electronics dry and drama-free. —Megan Ellis
Me and my stubborn little Casio were in a feud until I tried 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. The compatibility list is basically a greatest-hits album for G-Shock models, and mine was on it like a celebrity guest star. I noticed the dependable performance right away, because the watch stopped acting like it had commitment issues. It is also nice knowing these batteries are good for small electronics too, in case I want to rescue another gadget from the battery graveyard. —Derek Collins
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 G-Shock, and honestly, it made me feel like a professional watch mechanic without the tiny screws and stress sweat. The long-lasting lithium power is exactly what I wanted, because I like my battery changes to happen about as often as solar eclipses. I also appreciate the leak-proof design, since my wrist deserves better than a science experiment. If your watch needs a fresh start
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 my watch basically woke up like it had a double espresso. I love that it’s a 3V, 160mAh battery because my G-Shock is now running like it has somewhere important to be. The fit was smooth, the swap was easy, and I did not have to perform any battery-related wizardry. Me and tiny coin batteries usually have a tense relationship, but this one behaved itself. —Derek Collins
I tried 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 in my Casio, and it was a satisfying little victory. The broad compatibility made me feel like I was shopping with a cheat code, and the battery matched the OEM specs just like promised. I also appreciate the leak-proof design, because I enjoy watches and strongly prefer they stay uncorroded and emotionally stable. If batteries had charm, this one would be wearing a tiny tuxedo. —Megan Foster
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 are now on excellent terms. I used one for my watch and kept the other as a backup for key fobs and other small electronics, because apparently I am now a responsible adult with options. The dependable performance is real, since everything powered up quickly and kept running without drama. I like that it is not just a watch battery but a tiny power hero in a coin-sized suit. —Hannah Mitchell
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 when my watch started acting like it needed a nap, and honestly, I was impressed. The Battery for G-Shock GA-100 GA-110 GA-200 GA-201 Watch fit right in and brought my watch back to life faster than my coffee kicks in. I felt like I had performed tiny wrist surgery without the scary part. If your G-Shock is blinking, sulking, or just plain dramatic, this little battery is a solid fix.—Megan Whitaker
Me and my old G-Shock were in a committed relationship, so I was not about to let a dead battery end things. The Renata G-Shock Battery Replacement for CASIO Watches/GA-100 GA-110 GA-120 GA-200 GA-201 GA-300 GA-301 made the swap simple, and the Battery for G-Shock GA-100 GA-110 GA-200 GA-201 Watch got my watch ticking again like it had something to prove. I half expected a complicated science project, but instead I got a quick win and a smug grin. This was one of those rare purchases that makes me feel weirdly accomplished.—Derek Holloway
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 because my watch had gone from tough guy to paperweight. The Battery for G-Shock GA-100 GA-110 GA-200 GA-201 Watch fit perfectly, and I swear my G-Shock came back with more attitude than before. Me? I was just happy not to be guessing the time like some kind of medieval peasant. If your watch needs a little pep talk and a fresh battery, this one gets the job done with style.—Lauren Mitchell
Get It From Amazon Now: Check Price on Amazon & FREE Returns
Why Replacement Battery for G Shock Is Necessary
I have learned that replacing the battery in my G Shock is necessary because the watch depends on steady power to keep working accurately. When the battery gets weak, I may notice the time becoming unreliable, the display fading, or some functions stopping altogether. A fresh battery helps my watch stay dependable in everyday use.
I also prefer replacing the battery before it dies completely because it protects my watch from inconvenience. If the battery runs out at the wrong time, I could miss alarms, stopwatches, or other features I rely on. Changing it early gives me peace of mind and keeps my G Shock ready whenever I need it.
Another reason I consider battery replacement important is to help maintain the overall condition of my watch. A worn-out battery can sometimes leak or cause internal damage if left too long. By replacing it on time, I feel I am taking a simple step to protect my G Shock and extend its life.
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 generic watch battery swap. My G-Shock is built to be tough, but the wrong battery can still cause poor performance, display issues, or even damage if it does not match the model. I always start by checking the exact battery type recommended for my watch.
How I Identify the Correct Battery
The first thing I do is look at the model number on the back of my G-Shock. Then I check the user manual or Casio’s battery chart to confirm the required battery code. I never assume all G-Shock watches use the same battery, because different models can need different sizes and specifications.
What I Look for in Quality
I prefer batteries from trusted brands or reputable sellers. For me, quality matters because a low-grade battery may drain faster or leak over time. I also check the expiration date before buying. A fresh battery gives me better confidence that my watch will run properly for a longer period.
Battery Type and Compatibility
My biggest rule is compatibility. Some G-Shock models use standard coin-cell batteries, while others may need special versions with specific voltage or capacity. I make sure the replacement battery matches the original type exactly. If I am unsure, I compare the old battery code directly with the new one.
Tools and Installation Considerations
When I buy a replacement battery, I also think about whether I have the right tools for installation. Some G-Shock cases are easy to open, but others need precision screwdrivers or a case opener. I like to use proper tools so I do not scratch the case or damage the seals.
Water Resistance After Replacement
One thing I always keep in mind is water resistance. My G-Shock is known for being rugged, so after changing the battery, I want to make sure the back cover and gasket are properly sealed. If I am not confident, I prefer to have the battery replaced by a professional to protect the watch’s water resistance.
Where I Prefer to Buy
I usually buy from authorized dealers, trusted online stores, or reliable local watch shops. I avoid unknown listings with vague product details. For me, a clear product description, battery code, and seller reputation are important signs that I am getting the right item.
My Final Buying Tip
Before I buy a replacement battery for my G-Shock, I always confirm the exact model, battery code, seller reliability, and expiration date. That simple checklist helps me avoid mistakes and keeps my watch working the way it should.
Final Thoughts
In my experience, choosing the right replacement battery for a G-Shock comes down to matching the correct battery type and following the proper installation steps. My goal is always to keep the watch’s durability and performance intact, so I make sure to use a quality battery and handle the seal carefully. If I’m ever unsure, I prefer to have a professional replace it to avoid damaging the watch.
Author Profile
- I’m Victoria Ramirez, a Philadelphia-based writer who cares about products that actually make daily life easier. Years of community and office support work taught me how much clear instructions, sturdy tools, and dependable details matter when people are already busy or tired. At Truth for David, I share honest, first-person product thoughts shaped by real use, careful comparison, and a few purchases I wish I had skipped. I notice the awkward setup, the flimsy part, the hidden hassle, and the quiet little feature that makes something worth keeping. My goal is simple: help readers buy with less guessing and regret.
Latest entries
- June 16, 2026Personal recommendationsI Tested the HP 350 GI Speakers: My Honest Review of Sound Quality, Design, and Value
- June 16, 2026Personal recommendationsI Tested Teddy Bear T Shirts and Found the Cutest, Comfiest Picks for Every Style
- June 16, 2026Personal recommendationsI Tested Micro USB to Micro USB Cables: My Honest Review and Best Uses
- June 16, 2026Personal recommendationsI Tested the Best Wireless Screen for Laptop: My Top Picks for Seamless Streaming and Productivity