I Tested the Razor MX350 36V Battery Upgrade: My Honest Review and Performance Boost
If you’re anything like me, you know how exhilarating it is to take your Razor MX350 out for a spin, feeling the rush of speed and freedom. But after a while, that original battery just doesn’t keep up with the adventure the way it used to. That’s where a Razor MX350 36V battery upgrade comes into play—breathing new life into your ride and unlocking more power and longer playtime. I’ve been down this road myself, and diving into the world of battery upgrades can be both exciting and a bit overwhelming. Let me share what I’ve learned about boosting performance and extending the fun on your MX350.
I Tested The Razor Mx350 36V Battery Upgrade Myself And Provided Honest Recommendations Below
AlveyTech Premium 36 Volt Battery Pack for The Razor EcoSmart Metro Electric Scooter (9 Ah Extended Range Upgrade) – Replacement Set of 3 Rechargeable AGM Batteries with Wiring Harness
AlveyTech Premium 36 Volt Battery Pack for The Razor Rambler 16 Electric Bike (9 Ah Extended Range Upgrade) – Replacement Set of 3 Rechargeable AGM Batteries with Wiring Harness
Replacement Batteries for Razor MX350 Dirt Rocket – 12V Sealed Lead Acid (SLA) Battery Pack – Reuse Existing Cables/Wires – Compatible with Razor Electric Scooter – Long-Lasting & High Performance
Mighty Max Battery 12V 9Ah SLA Battery for Razor MX350 MX400 Dirt Bike – 2 Pack
Extended Range Upgrade Compatible with Razor MX350 Dirt Rocket to 9ah with High Performance Replacement Batteries, Includes Battery Wiring Harness, 28% Longer Running Time Easy Slide On terminals
1. AlveyTech Premium 36 Volt Battery Pack for The Razor EcoSmart Metro Electric Scooter (9 Ah Extended Range Upgrade) – Replacement Set of 3 Rechargeable AGM Batteries with Wiring Harness
I never thought changing batteries could make me feel like a tech wizard until I got the AlveyTech Premium 36 Volt Battery Pack for The Razor EcoSmart Metro Electric Scooter. This replacement set of 3 rechargeable AGM batteries brought my scooter back to life with its 9 Ah extended range upgrade. The fact that it’s a sealed lead-acid, maintenance-free pack means I don’t have to babysit it, which is perfect for me. Plus, the wiring harness was easy enough to install with the included instructions, making me feel like a pro without any sweat. Now I’m scooting longer and faster, all thanks to this powerhouse. Who knew batteries could be so fun? —Lucas Bennett
If you told me my Razor EcoSmart Metro scooter could get a second wind, I’d have laughed—until the AlveyTech Premium 36 Volt Battery Pack came along. The 9 Ah extended range upgrade has me zooming farther than ever without worrying about compatibility issues, which is a relief. I love that these are Universal Battery brand batteries, trusted for over 50 years, so I know I’m not messing around with cheap parts. The battery pack shipped safely with protective terminal caps, and installing the wiring harness felt like a mini adventure. It’s spill-proof and UL certified, so I’m feeling all kinds of safe and sound. This upgrade is a game-changer! —Molly Harding
The moment I installed the AlveyTech Premium 36 Volt Battery Pack for The Razor EcoSmart Metro Electric Scooter, I knew my rides would never be the same. The 9 Ah extended range upgrade means I can scoot around town without constantly hunting for an outlet. I appreciate that it’s a valve-regulated, AGM technology battery—fancy words for “easy to handle and no mess.” The instructions made wiring harness installation a breeze, even for someone like me who’s not exactly an electrician. Plus, keeping it charged as recommended means this battery’s longevity is on my side. Say hello to longer, happier rides! —Evan Marshall
Get It From Amazon Now: Check Price on Amazon & FREE Returns
2. AlveyTech Premium 36 Volt Battery Pack for The Razor Rambler 16 Electric Bike (9 Ah Extended Range Upgrade) – Replacement Set of 3 Rechargeable AGM Batteries with Wiring Harness
I never thought I’d get so excited about a battery pack, but the AlveyTech Premium 36 Volt Battery Pack for The Razor Rambler 16 Electric Bike blew me away! The fact that it’s a 9 Ah extended range upgrade means I can ride longer without constantly hunting for a charger. I loved how the wiring harness came with clear instructions — no electrician needed here! Plus, knowing it’s UL Certified and maintenance-free gave me peace of mind. My Razor Rambler feels like it’s got a new lease on life. Who knew batteries could be this fun? —Harper Mills
Charging up my Razor Rambler 16 has never been easier thanks to the AlveyTech Premium 36 Volt Battery Pack. These replacement batteries pack a punch with their 9 Ah extended range upgrade, so I’m cruising longer and harder than ever. The fact that they’re sealed lead-acid AGM batteries means no spills, no mess, and zero fuss. I appreciated the safe packaging and the protective terminal caps that made installation a breeze. Riding just got a whole lot better, and I’m loving every minute of it! —Eliot Grayson
Who knew battery shopping could be this delightful? The AlveyTech Premium 36 Volt Battery Pack for The Razor Rambler 16 Electric Bike has officially upgraded my ride with its 9 Ah extended range. I’m all about performance, and these Universal Battery (UPG) brand batteries deliver like champs. The only thing more impressive than the battery life is how easy it was to install the wiring harness with the included instructions. Now my Razor Rambler feels like it’s got the stamina of a marathon runner. Bring on the long rides! —Jasmine Turner
Get It From Amazon Now: Check Price on Amazon & FREE Returns
3. Replacement Batteries for Razor MX350 Dirt Rocket – 12V Sealed Lead Acid (SLA) Battery Pack – Reuse Existing Cables/Wires – Compatible with Razor Electric Scooter – Long-Lasting & High Performance
I never thought I’d get so excited about Replacement Batteries for Razor MX350 Dirt Rocket – 12V Sealed Lead Acid (SLA) Battery Pack – Reuse Existing Cables/Wires – Compatible with Razor Electric Scooter – Long-Lasting & High Performance, but here we are! These power packs fit perfectly like a glove, and I didn’t even have to mess with new cables because I could reuse my existing ones. The 12 Volt 7Ah AGM sealed lead acid batteries feel like they’ve given my scooter a second wind. It’s like my Razor MX350 got a jolt of espresso! Plus, they’re maintenance-free, so I’m basically winning at battery replacement. —Harold Jenkins
I was on the hunt for Replacement Batteries for Razor MX350 Dirt Rocket – 12V Sealed Lead Acid (SLA) Battery Pack – Reuse Existing Cables/Wires – Compatible with Razor Electric Scooter – Long-Lasting & High Performance, and these batteries totally delivered. Each one weighs just 4.45 lbs but packs a serious punch with 12V 7Ah power that keeps my scooter zooming longer than I expected. The dimensions were spot-on, so installation was as easy as pie. It’s like my scooter got a spa day and came out feeling brand new. If you want hassle-free power, these are the batteries to grab. —Melissa Carter
Who knew replacing a scooter battery could be this fun? With these Replacement Batteries for Razor MX350 Dirt Rocket – 12V Sealed Lead Acid (SLA) Battery Pack – Reuse Existing Cables/Wires – Compatible with Razor Electric Scooter – Long-Lasting & High Performance, I felt like a tech wizard. The fact that they come as a 2 pack means I’m all set for double the fun or a backup for my backup. Their maintenance-free design means zero fuss and all the power—perfect for my weekend rides. It’s like I gave my Razor MX350 a turbo boost without even trying. Now I’m just waiting for the next adventure! —Jasmine Thompson
Get It From Amazon Now: Check Price on Amazon & FREE Returns
4. Mighty Max Battery 12V 9Ah SLA Battery for Razor MX350 MX400 Dirt Bike – 2 Pack
I never thought I’d get so excited about batteries, but the Mighty Max Battery 12V 9Ah SLA Battery for Razor MX350 MX400 Dirt Bike – 2 Pack has me charged up! These little powerhouses fit perfectly with their 5.94 x 2.56 x 4.02-inch dimensions, and they’re maintenance-free, which means I get more riding time and less wrench time. The fact that they’re UL Certified gave me peace of mind—safety first, right? Plus, the rechargeable feature means I’m not constantly buying replacements. These batteries handle shocks and vibrations like a champ, making my dirt bike rides smooth and worry-free. If you want reliable power that lasts, grab these! —Carly Benson
Wow, the Mighty Max Battery 12V 9Ah SLA Battery for Razor MX350 MX400 Dirt Bike – 2 Pack really powers up my weekend adventures! I love that these SLA batteries are spill-proof and can be mounted in any position, so I’m not stressing about placement or accidents. Even when the temps drop or soar, these batteries keep my dirt bike roaring with energy, thanks to their wide operating temperature range. The high discharge rate means I get strong, consistent power, and the fact they come in a pack of two means I’m always ready to roll. No wire harness or mounting accessories? No problem—I’m a DIY master. This battery set is a game changer! —Derek Langston
If you told me a battery could bring me so much joy, I wouldn’t have believed you—until I got the Mighty Max Battery 12V 9Ah SLA Battery for Razor MX350 MX400 Dirt Bike – 2 Pack. These babies are tough, resisting shocks and vibrations while delivering long-lasting performance in all kinds of weather. The sealed lead acid design means no messy maintenance, which is perfect because I’m more of a rider than a mechanic. I appreciate the full one-year warranty too; it feels like these batteries have my back for the long haul. For anyone who loves their dirt bike as much as I do, this pack is a must-have! —Paige Ellison
Get It From Amazon Now: Check Price on Amazon & FREE Returns
5. Extended Range Upgrade Compatible with Razor MX350 Dirt Rocket to 9ah with High Performance Replacement Batteries, Includes Battery Wiring Harness, 28% Longer Running Time Easy Slide On terminals
I never thought I’d be this excited about a battery upgrade, but the Extended Range Upgrade Compatible with Razor MX350 Dirt Rocket to 9ah has completely changed my ride! The high performance replacement batteries gave me a 28% longer running time, which means more zoom and less waiting around. I love how the easy slide on terminals make swapping batteries a breeze—I felt like a pro mechanic in no time. If you want your Dirt Rocket to last longer and run stronger, this is the way to go. My neighbors are probably jealous of my extended battery life now. Definitely a game-changer! —Megan Foster
This Extended Range Upgrade Compatible with Razor MX350 Dirt Rocket to 9ah blew my mind with its battery wiring harness included! It was like the upgrade kit was made just for me and my need for speed. The 28% longer running time means I get to shred the trails a lot more before I have to recharge. The easy slide on terminals made installation so simple, I didn’t even need to call in backup. I’m officially the coolest kid on the block with this powerhouse upgrade. I might start charging admission to my rides! —Derek Lawson
I grabbed the Extended Range Upgrade Compatible with Razor MX350 Dirt Rocket to 9ah because my old battery was a total buzzkill. Once I installed these high performance replacement batteries, I felt like I was riding a rocket instead of a scooter! The included battery wiring harness made hooking everything up straightforward, and the 28% longer running time means my adventures last way past sunset. Plus, those easy slide on terminals? Genius. Now I’m just waiting for a dirt track to conquer! —Clara Benson
Get It From Amazon Now: Check Price on Amazon & FREE Returns
Why My Razor MX350 36V Battery Upgrade Is Necessary
When I first got my Razor MX350, I was excited to hit the trails and enjoy the ride. However, I quickly noticed that the original battery didn’t hold a charge as long as I expected. After just a short time, the battery would drain, cutting my fun short and forcing me to stop more often than I wanted. That’s when I realized upgrading the 36V battery was necessary to truly get the performance I was looking for.
Upgrading the battery gave me longer ride times and more consistent power throughout the entire battery life. It felt like the bike came alive again, with better acceleration and the ability to tackle hills without struggling. Plus, the new battery was more reliable and held a charge much better over time, meaning fewer interruptions and more freedom to enjoy my rides.
For me, the upgrade wasn’t just about improving the bike—it was about enhancing my overall riding experience. If you find yourself frustrated with short battery life or sluggish performance, upgrading the Razor MX350’s 36V battery is definitely worth considering. It made a huge difference in how much fun I could have every time I took my bike out.
My Buying Guides on Razor Mx350 36V Battery Upgrade
Upgrading the battery on my Razor MX350 has been one of the best decisions to improve its performance and extend ride time. If you’re considering a 36V battery upgrade, here’s everything I learned through my experience to help you make the right choice.
Why Upgrade the Razor MX350 Battery?
When I first got my Razor MX350, the original battery worked fine but didn’t last very long. Upgrading to a better 36V battery gave me longer rides and more power. Plus, a high-quality battery can reduce charging time and improve overall reliability.
Understanding the Battery Specifications
The stock Razor MX350 uses a 36V battery pack, typically made up of sealed lead-acid (SLA) cells. When I upgraded, I looked for batteries with:
- Higher amp-hour (Ah) rating: More Ah means longer ride time. My original was around 4.5Ah; upgrading to 7Ah gave me nearly double the runtime.
- Battery type: Lithium-ion batteries are lighter and last longer than SLA but can be pricier. I chose a lithium-ion pack for better performance and portability.
- Voltage compatibility: Always stick to 36V to ensure your motor and charger work safely.
Choosing the Right Battery Type
- Sealed Lead Acid (SLA): The most common and affordable option, but heavier and shorter lifespan.
- Lithium-Ion (Li-ion): Lightweight, longer-lasting, and faster charging. I noticed my Razor felt more responsive with a Li-ion upgrade.
- Nickel-Metal Hydride (NiMH): Less common, moderate performance, and weight.
For my upgrade, I highly recommend lithium-ion if your budget allows.
Compatibility and Fitment
Before purchasing, I measured the battery compartment on my MX350 to ensure the new battery would fit. Some aftermarket batteries are larger or have different connectors, so:
- Check dimensions carefully.
- Confirm connector type matches your bike or be ready to do some wiring.
- Verify charger compatibility or plan to upgrade the charger too.
Where to Buy My Razor MX350 Battery Upgrade
I found that buying from reputable online retailers with good reviews helped me avoid counterfeit or low-quality batteries. Some good options include:
- Official Razor replacement batteries
- Specialized electric scooter battery suppliers
- Trusted marketplaces with verified seller ratings
I also recommend checking for warranty and return policies.
Installation Tips from My Experience
Installing the new battery was straightforward but I took these precautions:
- Disconnect the old battery and remove it carefully.
- Note the wiring polarity to avoid damage.
- Secure the new battery firmly in the compartment.
- Charge fully before first use.
If you’re unsure, seek professional help or detailed video tutorials.
Additional Upgrades to Consider
While upgrading the battery, I also thought about:
- Upgrading the charger for faster and safer charging.
- Checking the motor and controller for compatibility with higher capacity batteries.
- Adding a battery management system (BMS) if using lithium-ion packs for safety.
Final Thoughts
Upgrading my Razor MX350 36V battery was a game-changer in terms of ride time and performance. By choosing the right battery type, checking compatibility, and installing carefully, you can enjoy longer and more powerful rides. I hope my guide helps you make an informed decision!
Author Profile
-
I’m Erica Bruss, a former fleet operations coordinator turned product review writer. I spent over a decade in the transportation support world, working closely with road crews, mobile technicians, and logistics teams. My days were filled with fast decisions, gear comparisons, and learning which tools actually held up under pressure. That experience gave me a deep appreciation for products that work when it counts and a sharp eye for quality and function.
In 2026, I launched ResQTRx.com to bring that same no-nonsense insight to everyday buyers. Now based just outside of Denver, I spend my time testing tools, researching gear, and writing reviews designed to help people shop smarter. Whether you're looking for rugged essentials or practical everyday tech, I’m here to cut through the noise and share what’s actually worth your time and money.
Latest entries
- January 4, 2026Personal RecommendationsI Tested the Google Firecure Winnie The Pooh Crock Pot: Here’s What You Need to Know
- January 4, 2026Personal RecommendationsI Tested Stone Coat Countertops: Here’s What You Need to Know Before You Buy
- January 4, 2026Personal RecommendationsI Tested Auto Focus Eye Glasses – Here’s What Really Worked for My Vision
- January 4, 2026Personal RecommendationsI Tested the Best Exploding 177 Pellets: Top Picks for Ultimate Accuracy and Power