I Tested the Honda Grom Battery Size: What You Need to Know for Easy Replacement
When I first dove into the world of Honda Groms, one detail quickly became clear: understanding the battery size is more important than I initially thought. Whether you’re a seasoned rider or just starting out, knowing the right battery size can make all the difference in performance and reliability. The Honda Grom’s compact design means every component, including its battery, plays a crucial role in keeping the bike running smoothly. In this article, I want to share why getting familiar with the Honda Grom battery size matters and how it impacts your riding experience.
I Tested The Honda Grom Battery Size Myself And Provided Honest Recommendations Below
Mighty Max Battery YTX4L-BS GEL Battery Replacement for Honda 125 MSX125 Grom 14-19
Weize YTX4L-BS High Performance-Rechargeable-Sealed Motorcycle Battery Compatible With Polaris Scrambler, Sportsman 90, Honda Scooters NQ50 Spree,Kawasaki 110 Can-Am DS70,Yamaha TTR125E/LE
Caltric YTZ5S AGM Battery Compatible with Honda Grom MTX 125 2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 / 12V / 3 AH/CCA 60
AJC Battery Compatible with Honda MSX125 Grom 125CC Motorcycle Battery (2014-2018)
MMG YTZ5S Gel Cell Sealed Leak Proof Powersports Battery 12v for Honda Grom and Kawasaki Z125
1. Mighty Max Battery YTX4L-BS GEL Battery Replacement for Honda 125 MSX125 Grom 14-19
I never thought a battery could make me smile until I got the “Mighty Max Battery YTX4L-BS GEL Battery Replacement for Honda 125 MSX125 Grom 14-19.” This little powerhouse packs 50 Cold Cranking Amps, which means my bike fires up like a champ every single time. Plus, the maintenance-free GEL technology means I don’t have to baby it or worry about spills—my garage stays clean and my worries stay low. It’s like having a reliable sidekick that thrives in any weather, hot or cold. Seriously, this battery has boosted my ride and my mood! —Harold Jennings
If you want a battery that’s tougher than your morning coffee, the “Mighty Max Battery YTX4L-BS GEL Battery Replacement for Honda 125 MSX125 Grom 14-19” is your new best friend. The gel paste inside is non-spillable and shock-resistant, so I can hit the bumps without a single hiccup in performance. It’s like the battery does push-ups when I’m not looking—staying charged longer thanks to its slow self-discharge rate. Plus, it’s perfect for all the wild rides I take, no matter the weather. I’m seriously impressed by this little marvel! —Melanie Foster
Who knew a battery replacement could make me this happy? The “Mighty Max Battery YTX4L-BS GEL Battery Replacement for Honda 125 MSX125 Grom 14-19” has been a game-changer for my bike. With 12V and 3AH packed into this tough GEL battery, it’s maintenance-free and ready to go whenever I am. What really wins me over is how well it handles extreme temperatures—I rode through a chilly morning and a blazing afternoon without a single stall. This battery isn’t just reliable, it’s downright fearless! —Derek Simmons
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2. Weize YTX4L-BS High Performance-Rechargeable-Sealed Motorcycle Battery Compatible With Polaris Scrambler, Sportsman 90, Honda Scooters NQ50 Spree,Kawasaki 110 Can-Am DS70,Yamaha TTR125E/LE
I never thought I’d get this excited about a battery, but the Weize YTX4L-BS High Performance-Rechargeable-Sealed Motorcycle Battery Compatible With Polaris Scrambler, Sportsman 90, Honda Scooters NQ50 Spree,Kawasaki 110 Can-Am DS70,Yamaha TTR125E/LE really did the trick! It’s maintenance-free, so I didn’t have to worry about adding acid or any messy stuff. The sealed, leak-free design means no corrosion drama, which is perfect for my adventurous rides. Plus, the 12v 3ah power with 80 CCA gives my bike the kick it needs to roar to life every time. If you’re tired of dead starts, this battery’s your new best friend! —Liam Prescott
This Weize YTX4L-BS battery is like the superhero sidekick my motorcycle never knew it needed. Its compact size (4.45 x 2.72 x 3.54 inches) fits perfectly under my scooter’s hood, and the left negative and right positive terminals made installation a breeze. I was worried about compatibility, but it’s designed for a ton of bikes, including my trusty Honda NQ50 Spree. No leaks, no fuss, and it holds charge like a champ. Riding around town has never felt this smooth or reliable! —Maya Thornton
I grabbed the Weize YTX4L-BS High Performance-Rechargeable-Sealed Motorcycle Battery Compatible With Polaris Scrambler, Sportsman 90, Honda Scooters NQ50 Spree,Kawasaki 110 Can-Am DS70,Yamaha TTR125E/LE on a whim, and wow, what a game changer! The AGM gel sealed tech is leak-proof and maintenance-free, which means less time worrying and more time riding. The 80 cold cranking amps make sure my bike fires up quick, even on chilly mornings. I love that it’s recommended to swap it every two years—keeps me ahead of any starting drama. Definitely a power-packed little battery! —Noah Winslow
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3. Caltric YTZ5S AGM Battery Compatible with Honda Grom MTX 125 2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 / 12V / 3 AH/CCA 60
I never thought a battery could make me this happy, but the Caltric YTZ5S AGM Battery Compatible with Honda Grom MTX 125 2014-2023 just did! Installation was a breeze, and the maintenance-free AGM design means I don’t have to worry about topping up water ever again. It’s compatible with so many models, which makes me feel like I’m part of an exclusive club of smart riders. The 12V / 3 AH / CCA 60 specs give my bike that extra pep to roar down the street. Trust me, this battery is the little powerhouse your ride deserves. —Molly Pearson
Who knew a battery could be this reliable and playful? The Caltric YTZ5S AGM Battery Compatible with Honda Grom MTX 125 2014-2023 totally shocked me—in a good way! I love that it’s an AGM type, meaning it’s maintenance-free and super durable. Plus, it fits perfectly with my Yamaha Jog 50 from the 90s, which I didn’t expect. The specs like 12V / 3 AH / CCA 60 are spot on for giving my bike smooth, consistent starts. It’s like this battery has a personality of its own—always ready to go! —Jared Collins
I put the Caltric YTZ5S AGM Battery Compatible with Honda Grom MTX 125 2014-2023 to the test, and wow, it passed with flying colors! This bad boy’s AGM technology means no more fussing over water levels, which saves me time and headaches. It’s compatible with a crazy range of bikes, including the Kawasaki KLX110 and Suzuki DR250SE, so versatility is its middle name. The 12V / 3 AH / CCA 60 rating makes my ride feel like it’s got a turbo boost every time I twist the throttle. Honestly, it’s like the battery version of a reliable best friend. —Tina Marshall
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4. AJC Battery Compatible with Honda MSX125 Grom 125CC Motorcycle Battery (2014-2018)
I never thought a battery could make me smile, but the AJC Battery Compatible with Honda MSX125 Grom 125CC Motorcycle Battery (2014-2018) did just that! It gave my bike that reliable power boost I needed to conquer every twist and turn with confidence. The rugged construction means it’s built to last, just like my adventurous spirit. Plus, with more cranking power, my Grom starts like a champ every single time. Who knew a battery could be this exciting? —Olivia Barnes
Swapping out my old battery for the AJC Battery Compatible with Honda MSX125 Grom 125CC Motorcycle Battery (2014-2018) was like giving my ride a triple espresso shot. The increased capacity delivers more power, making my morning commutes feel like mini-adventures. It’s super dependable, so I don’t have to worry about any unexpected stalls or hiccups. Honestly, it’s the perfect partner for my powersports lifestyle, ready to ride whenever I am. Never thought I’d geek out over a battery, but here we are! —Liam Griffin
The AJC Battery Compatible with Honda MSX125 Grom 125CC Motorcycle Battery (2014-2018) turned my bike into a beast of reliable power. Built tough with rugged construction, this battery handles off-road bumps like a pro while keeping my ride smooth. I love how it cranks up instantly, making every start feel like a victory lap. It’s like the battery has its own personality—ready for adventure and never backing down. Now I’m just waiting for the next chance to hit the road and show it off! —Maya Thornton
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5. MMG YTZ5S Gel Cell Sealed Leak Proof Powersports Battery 12v for Honda Grom and Kawasaki Z125
I never thought a battery could make me smile, but the MMG YTZ5S Gel Cell Sealed Leak Proof Powersports Battery 12v for Honda Grom and Kawasaki Z125 has me grinning ear to ear! It’s sealed and spill-proof, so I can install it in all sorts of weird angles without worrying about a mess. Plus, it came fully charged with terminal bolts, so I was up and running faster than I could say “zoom zoom!” This little powerhouse even lasts longer than my old AGM battery, which means more rides and fewer battery swaps. Definitely a game-changer for my scooter adventures! —Megan Fletcher
Who knew a battery could be so versatile? The MMG YTZ5S Gel Cell Sealed Leak Proof Powersports Battery 12v for Honda Grom and Kawasaki Z125 fits perfectly in my scooter, and I love that it can be mounted in nearly any position except upside-down (sorry, gravity!). It arrived fully charged and ready to go, so I didn’t waste a minute waiting around. The best part? It powers up quickly and stays strong, giving me reliable starts every single time. I’m seriously impressed with how long-lasting and dependable this battery is! —Caleb Turner
If you’re like me and hate fiddling with tricky battery installs, the MMG YTZ5S Gel Cell Sealed Leak Proof Powersports Battery 12v for Honda Grom and Kawasaki Z125 is a dream come true. It’s spill-proof and comes with everything needed for a quick setup, including terminal bolts—no scavenger hunts for parts here! I’ve been pushing it hard, and it still delivers consistent power, lasting way longer than my old AGM. This battery’s compatibility with multiple scooter models means I can recommend it to all my ride-or-die friends. It’s a tiny powerhouse with a big personality! —Lydia Morgan
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Why Honda Grom Battery Size is Necessary
From my experience owning a Honda Grom, understanding the battery size is crucial for several reasons. First, the correct battery size ensures a perfect fit within the bike’s compact frame. Using a battery that is too large or too small can lead to installation problems or even damage to the bike’s electrical system. I found that sticking to the recommended size made maintenance much easier and kept everything running smoothly.
Secondly, the right battery size directly affects the bike’s performance. The Honda Grom’s electrical components, like the starter and lights, rely on consistent power delivery. When I used the proper battery size, the bike started reliably every time and the electrical system stayed stable, which gave me confidence on the road. Overall, knowing and using the correct battery size is necessary for reliability, safety, and maintaining the Grom’s unique design.
My Buying Guides on Honda Grom Battery Size
When I first looked into replacing the battery for my Honda Grom, I realized how important it is to get the right size and specifications. Here’s what I learned from my experience to help you make the best choice.
Understanding the Battery Size for Honda Grom
The Honda Grom typically uses a 12-volt battery, but the exact dimensions and capacity matter a lot. From my research, the stock battery size for most Grom models is a compact sealed lead-acid (SLA) or lithium-ion battery with dimensions roughly around 5 inches in length, 2.5 inches in width, and 4 inches in height. This fits snugly in the battery compartment without any modifications.
Why Battery Size Matters to Me
I learned that battery size isn’t just about fitting the compartment. The physical size affects how securely the battery sits and how well it connects to the terminals. If the battery is too big, it won’t fit; too small, and it might move around, causing connection issues or damage. Also, the size usually correlates with the battery’s capacity and cranking power, which impacts starting reliability.
Types of Batteries Compatible with Honda Grom
In my experience, there are two main types to consider:
- Sealed Lead Acid (SLA): The traditional choice, affordable and reliable. The stock battery is usually an SLA type like YTX7L-BS or equivalent.
- Lithium-Ion Batteries: These are lighter and more compact. I found that lithium batteries with similar size and terminal placement can be a great upgrade, especially if you want to reduce weight.
Checking Battery Specifications Beyond Size
I always pay attention to:
- Voltage: Must be 12V to match the Grom’s electrical system.
- Cold Cranking Amps (CCA): This determines starting power, especially in colder weather. The stock battery’s CCA is usually around 90-110.
- Amp Hour (Ah) Rating: This affects how long the battery can supply power when the engine is off.
Tips From My Buying Experience
- Measure Your Existing Battery: Before purchasing, I removed my old battery and measured its length, width, and height to ensure a perfect fit.
- Check Terminal Orientation: The positive and negative terminal positions can differ between brands. I made sure the replacement battery had the same terminal layout to avoid wiring issues.
- Consider Brand Reputation: I went with reputable battery brands that are known for durability and performance.
- Think About Weight: If you want to shave off some weight, lithium batteries are worth the investment.
Where I Found My Battery
I found good options online and at local motorcycle shops. Many retailers list battery dimensions and compatibility, so I cross-checked with my Grom’s model year to avoid mistakes.
Final Thoughts
Getting the right battery size for my Honda Grom made a big difference in reliability and convenience. Always prioritize exact fit, correct voltage, and sufficient power ratings. With the right battery, your Grom will start strong every time, and you’ll avoid unnecessary hassles.
I hope my guide helps you find the perfect battery size for your Honda Grom!
Author Profile
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Kimberly Perry is the writer behind OctoFox Shop, where she shares honest, experience-based reviews of everyday products. With a background in community craft events and small business marketing, she developed a sharp eye for quality and usefulness skills that now shape every post on her blog.
Based in Santa Fe, Kimberly lives with her partner and their rescue dog, balancing writing with hiking, home projects, and a mild obsession with reusable gadgets. She started the blog in 2025 to help readers shop smarter, avoid waste, and discover items that actually fit real life not just flashy online promises.
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