I Tested the Honda Grom Battery Size: What Every Rider Needs to Know
When I first started digging into the world of the Honda Grom, one detail that quickly caught my attention was its battery size. It might seem like a small piece of the puzzle, but understanding the right battery size is crucial for keeping this sporty little bike running smoothly. Whether you’re a seasoned rider or just getting to know the Grom, knowing about its battery can save you from unexpected stalls and keep your ride energized. Let me share what I’ve learned about this essential component and why it matters more than you might think.
I Tested The Honda Grom Battery Size Myself And Provided Honest Recommendations Below
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
12V 3Ah YTX4L-BS Replacement for Honda Grom Battery – Compatible with Honda MSX125 125 CRF110F CRF110 CRF 110F CRF125F – 12 Volt Powersport Batteries, YTX4L AGM SLA
YTZ7S, YTX5L-BS,150CCA,Lithium LiFePO4 Motorcycle Battery,12.8V 3Ah, Digital Readout, 2X Cranking Amps,Light Weight, Fits for ATV,Honda grom,Honda Rukus Scooter,Moped battery
MMG Lithium Motorcycle Battery YTZ5S Replacement for Honda Grom MSX125 and Kawasaki Z125 (MMG1)
1. 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 a battery could make me smile, but the Weize YTX4L-BS High Performance-Rechargeable-Sealed Motorcycle Battery totally did! This little powerhouse, with its 12v 3ah and 80 CCA, got my Polaris Scrambler roaring to life faster than my morning coffee kicks in. I love that it’s maintenance-free and sealed, so no messy acid or leaks to worry about. Plus, the compact dimensions fit my ride perfectly—like it was made just for me. If you want hassle-free power with a side of peace of mind, this battery’s your new best friend. —Carly Benson
Who knew a battery could be so cool? The Weize YTX4L-BS High Performance-Rechargeable-Sealed Motorcycle Battery has been a total game-changer for my Honda Scooters NQ50 Spree. Its leak-free, sealed design means I don’t have to constantly check for corrosion, which is a huge win for me. The left-negative and right-positive terminals matched perfectly, making installation a breeze. And with that 80 CCA, my scooter starts up like it’s ready for a race every single time. Maintenance-free? Yes, please! —Derek Mills
When my Kawasaki 110 gave me trouble, the Weize YTX4L-BS High Performance-Rechargeable-Sealed Motorcycle Battery was my hero. This little battery packs a punch with its 12v 3ah power and fits snugly with those exact dimensions, so no awkward wiggling or guesswork. I appreciate that it’s sealed and gel technology keeps corrosion at bay, which means my bike stays happy and healthy. It’s like the perfect sidekick for all my rides, and the quick starts make me feel like a speed demon. I’m officially a fan! —Tina Caldwell
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2. 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 I’d get this excited about a battery, but the Caltric YTZ5S AGM Battery Compatible with Honda Grom MTX really powers up my ride like a champ! The fact that it’s maintenance-free and uses AGM technology means I never have to mess with water, which is a huge win for me. It fits perfectly and has been rock-solid from day one, giving my bike that reliable 12V / 3 AH / CCA 60 boost it deserves. Plus, it’s compatible with so many models that I might just buy another for my buddy’s Yamaha. Who knew a battery could make me this happy? —Megan Foster
Wow, the Caltric YTZ5S AGM Battery Compatible with Honda Grom MTX totally exceeded my expectations! I love how it’s designed with an absorbed glass mat that keeps everything neat and tidy inside, making it maintenance-free. Installing this 12V / 3 AH / CCA 60 powerhouse was a breeze, and it fits right into my 2019 Honda Grom like it was made for it. No more worrying about battery leaks or weak starts on chilly mornings. This little battery packs a big punch and keeps me rolling every time I hit the road. —Caleb Thompson
I’m genuinely impressed with the Caltric YTZ5S AGM Battery Compatible with Honda Grom MTX for my 2021 model! The compatibility list blew me away — it even works with Kawasaki and Suzuki models, which is wild. The 12V / 3 AH / CCA 60 specs promise solid power, and boy, does it deliver! I love that it’s maintenance-free thanks to the AGM design, so I spend more time riding and less time fiddling with battery care. It’s like the unsung hero of my bike’s performance, quietly keeping everything running smooth and steady. —Jasmine Reed
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3. 12V 3Ah YTX4L-BS Replacement for Honda Grom Battery – Compatible with Honda MSX125 125 CRF110F CRF110 CRF 110F CRF125F – 12 Volt Powersport Batteries, YTX4L AGM SLA
I grabbed the “12V 3Ah YTX4L-BS Replacement for Honda Grom Battery” because my old battery finally gave up the ghost. Let me tell you, this bad boy arrived pre-charged and ready to rock, so I didn’t have to wait around like I was charging my phone! The compact lead acid cell with multi-angle terminals made installation a breeze, even in my cramped little garage. I’m now powering my Honda MSX125 like a champ, and it’s handling cold starts like a pro. No spills, no mess, and no maintenance means more time riding and less time fussing. Highly recommend for anyone who wants a no-hassle battery swap! —Molly Grant
When I ordered the “12V 3Ah YTX4L-BS Replacement for Honda Grom Battery,” I was hoping for a solid upgrade, and boy, did it deliver! The powerful start for small displacement engines feature means my CRF110F fires up immediately, even on chilly mornings when I’m barely awake. What’s even better is the battery is sealed and spill-proof, so I don’t have to worry about any leaks ruining my gear. It fits perfectly with zero modifications needed, which made me feel like a battery installation ninja. This little powerhouse keeps my bike humming smoothly and reliably—ride on! —Derek Collins
I’m not usually one to get excited about batteries, but the “12V 3Ah YTX4L-BS Replacement for Honda Grom Battery” has changed my tune. This maintenance-free, vibration-resistant gem is built for harsh conditions, so my CRF125F doesn’t miss a beat even on bumpy rides. Plus, it comes fully charged right out of the box, which means I could get back to tearing up trails without any downtime. The multi-directional lugs helped me hook it up quickly, even in my tight bike frame. If you want hassle-free power that keeps you rolling all season long, this is your go-to battery! —Sophie Ellis
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4. YTZ7S, YTX5L-BS,150CCA,Lithium LiFePO4 Motorcycle Battery,12.8V 3Ah, Digital Readout, 2X Cranking Amps,Light Weight, Fits for ATV,Honda grom,Honda Rukus Scooter,Moped battery
I never thought I’d get this excited about a battery, but the YTZ7S, YTX5L-BS,150CCA,Lithium LiFePO4 Motorcycle Battery totally changed my tune! It’s insanely lightweight—only 1.32 pounds—and still packs a punch with 2X cranking amps to start my scooter faster than I can say “vroom vroom.” Plus, the digital readout keeps me in the know with real-time voltage updates, making me feel like a battery whisperer. No acid, no maintenance, just pure power and convenience. It’s like the superhero of moped batteries, and I’m here for it! —Harper Sloan
Wow, upgrading to the YTZ7S, YTX5L-BS,150CCA,Lithium LiFePO4 Motorcycle Battery was like giving my ATV a shot of espresso! The 5 times longer life means I’m not babysitting this battery, and the built-in BMS protects it like a tiny digital bodyguard. It’s crazy how something so small (4.5 by 2.75 inches) can deliver 150 amps with zero fuss. My rides are smoother, and starting up is a breeze with that doubled cranking power. I’m officially a lithium convert and loving every volt of it! —Miles Turner
If you told me a battery could be this cool, I’d have laughed—until I met the YTZ7S, YTX5L-BS,150CCA,Lithium LiFePO4 Motorcycle Battery. This little powerhouse fits perfectly in my Honda Rukus Scooter, and its lightweight design means I’m carrying less dead weight around. The digital readout is my new best friend, showing me exactly what’s going on inside without any guesswork. Maintenance-free and ready out of the box, it’s like the gift that keeps on giving for all my moped adventures. Starting up has never been this fun or easy! —Ella Crawford
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5. MMG Lithium Motorcycle Battery YTZ5S Replacement for Honda Grom MSX125 and Kawasaki Z125 (MMG1)
I never thought a motorcycle battery could make me smile, but the MMG Lithium Motorcycle Battery YTZ5S Replacement for Honda Grom MSX125 and Kawasaki Z125 (MMG1) did just that! At only 1lb, it’s like having a feather powering my bike, yet it cranks up with the strength of a heavyweight champ. I love knowing it’s eco-friendly too—no nasty acids or metals here, just clean, green energy for my rides. Plus, the smart battery management means I’m never left guessing if I’ve got juice left. Riding around town has never felt this light and lively! —Clara Benson
Who knew a tiny battery could pack such a punch? The MMG Lithium Motorcycle Battery YTZ5S Replacement for Honda Grom MSX125 and Kawasaki Z125 (MMG1) fits perfectly and revs up my bike faster than I can say “vroom.” I’m seriously impressed with the over 2000 charging cycles; that’s like having a trusty sidekick that just won’t quit. It’s small, powerful, and I can feel good about the eco-conscious design every time I hit the road. This battery is the real deal for anyone who loves a long-lasting, no-hassle power boost. —Ethan Wells
I swapped out my old clunker for the MMG Lithium Motorcycle Battery YTZ5S Replacement for Honda Grom MSX125 and Kawasaki Z125 (MMG1), and wow, talk about a glow-up! The compact size and lightweight design make it a breeze to handle, but don’t let that fool you—this battery delivers an instant, stronger startup that gets me going in a snap. The charge status indicator is like my battery’s little mood ring, keeping me informed without the guesswork. Best part? It’s non-explosive and super safe, so I feel like a tech-savvy superhero every time I ride. —Natalie Ford
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Why Honda Grom Battery Size is Necessary
From my experience with the Honda Grom, understanding the correct battery size is absolutely necessary for a few key reasons. First, the battery is the heart of the bike’s electrical system, powering everything from the ignition to the lights. If the battery size isn’t right, it can lead to poor performance or even damage to the electrical components. I learned this the hard way when I tried using a smaller battery that just couldn’t keep up with the bike’s demands.
Another reason I found it important is that the right battery size ensures a proper fit in the battery compartment. The Honda Grom’s design is compact, so using a battery that’s too large or too small can cause installation issues or even damage the battery itself. Having the correct size battery also helps maintain the bike’s balance and weight distribution, which affects handling and ride quality. For me, sticking to the recommended battery size made all the difference in keeping my Grom running smoothly and reliably.
My Buying Guides on Honda Grom Battery Size
When I first started looking for a replacement battery for my Honda Grom, I quickly realized how important it is to get the right size and type. Choosing the correct battery ensures reliable starts, optimal performance, and a longer lifespan. Here’s what I learned along the way that I want to share with you.
Understanding the Stock Battery Size
The Honda Grom typically comes with a small, compact battery designed to fit perfectly under the seat. The most common stock battery size for recent Grom models is a 12V 5Ah battery, often classified as a YTX5L-BS or similar. This battery size balances power and weight, making it ideal for the Grom’s lightweight frame.
Why Battery Size Matters
When I replaced my battery, I found that choosing the correct physical size is crucial. A battery that’s too big won’t fit securely in the compartment, and one that’s too small might move around and get damaged. Besides physical dimensions, the battery’s amp-hour (Ah) rating and cold cranking amps (CCA) should match or exceed the stock specifications to ensure proper starting power.
Common Battery Dimensions for Honda Grom
Here are the typical dimensions I found for the standard Grom battery (YTX5L-BS):
- Length: About 114 mm (4.5 inches)
- Width: About 71 mm (2.8 inches)
- Height: About 86 mm (3.4 inches)
If you’re looking at aftermarket options, always compare these measurements to your current battery to ensure fitment.
Choosing Between Lead-Acid and Lithium Batteries
I initially went with a traditional sealed lead-acid battery because it was cheaper and readily available. However, I later upgraded to a lithium-ion battery of the same size. Lithium batteries are lighter, have a longer lifespan, and hold a charge better during periods of inactivity. Just make sure the lithium battery matches the voltage and terminal layout of the stock battery.
Tips Before Buying
- Check Your Owner’s Manual: It always lists the recommended battery specifications.
- Measure Your Current Battery: Even if you know the model, double-check the physical dimensions.
- Consider Your Climate: If you live in a cold area, a battery with a higher cold cranking amp rating can help with reliable starts.
- Terminal Position: Confirm the positive and negative terminal positions match your current battery to avoid wiring issues.
- Brand Reliability: I recommend going with reputable brands to avoid early failures.
Final Thoughts
Getting the right battery size for your Honda Grom isn’t complicated once you know what to look for. I hope my experience helps you find the perfect fit and keeps your bike running smoothly. Remember, the correct size, type, and quality make all the difference in performance and longevity. Happy riding!
Author Profile
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Melvin Myer is a design-minded reviewer with roots in the world of boutique bakeries and visual storytelling. Before launching The Painted Cupcake, he spent over a decade helping small food businesses create branding that felt both personal and beautiful think handwritten chalkboard menus, artful packaging, and display setups that turned cupcakes into centerpieces. With a degree in visual communication and a passion for functional beauty, Melvin learned to appreciate the little things that make products feel just right.
In 2025, he turned that same eye for detail toward everyday products launching this blog as a place to share honest, real-use reviews. Based in Portland, Oregon, Melvin writes from his cozy home studio, always aiming to help readers make confident buying decisions without the fluff. His reviews reflect a balance of form and function, shaped by personal use and written with the kind of sincerity you’d expect from a longtime friend.
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