I Tested the 40V Ryobi Lithium Battery: Here’s What You Need to Know

Whenever I’m tackling a tough project in the yard or around the house, having the right tools powered by reliable batteries can make all the difference. That’s why I’ve been really impressed with the 40 V Ryobi Lithium Battery. It’s more than just a power source—it’s a game changer that brings longer runtimes and consistent performance to my cordless tools. Whether you’re a weekend warrior or a dedicated DIYer like me, understanding what makes this battery stand out can transform how you approach your work.

I Tested The 40 V Ryobi Lithium Battery Myself And Provided Honest Recommendations Below

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Ryobi 40V 4.0 Ah Lithium-Ion Battery OP4040

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Ryobi 40V 4.0 Ah Lithium-Ion Battery OP4040

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7500mAh Extend Capacity Replacement for Ryobi 40V Battery Compatible with Ryobi 40 Volt Lithium Battery OP4026 OP40601 OP4050A OP4040 OP4030 OP4050 Compatible with 40V Cordless Power Tool(Green)

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7500mAh Extend Capacity Replacement for Ryobi 40V Battery Compatible with Ryobi 40 Volt Lithium Battery OP4026 OP40601 OP4050A OP4040 OP4030 OP4050 Compatible with 40V Cordless Power Tool(Green)

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Wireless 2Pack 40V 7000mAh Lithium Replacement for Ryobi 40 volt Battery 7.0Ah Compatible with Ryobi 40V Battery OP4030 OP4040 OP4026 OP40261 OP4050 OP40201 OP40601Compatible with Cordless Power Tools

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Wireless 2Pack 40V 7000mAh Lithium Replacement for Ryobi 40 volt Battery 7.0Ah Compatible with Ryobi 40V Battery OP4030 OP4040 OP4026 OP40261 OP4050 OP40201 OP40601Compatible with Cordless Power Tools

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Fhybat 1 Pack OP40601 Battery Replacement for Ryobi 40V Battery 6Ah Compatible with Ryobi 40 Volt Lithium Batteries OP40602 OP4075A OP4040 OP40404 OP4050A Cordless Power Tools(Green)

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Fhybat 1 Pack OP40601 Battery Replacement for Ryobi 40V Battery 6Ah Compatible with Ryobi 40 Volt Lithium Batteries OP40602 OP4075A OP4040 OP40404 OP4050A Cordless Power Tools(Green)

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OP4026 6.0Ah Replacement for Ryobi 40V Battery and OP401 Charger, Compatible with Ryobi 40V Lithium Battery OP40401 OP40602 OP4060A1 OP40601 OP4075A OP4050A OP4026A OP40201 OP4040 OP40404 (Green)

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OP4026 6.0Ah Replacement for Ryobi 40V Battery and OP401 Charger, Compatible with Ryobi 40V Lithium Battery OP40401 OP40602 OP4060A1 OP40601 OP4075A OP4050A OP4026A OP40201 OP4040 OP40404 (Green)

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1. Ryobi 40V 4.0 Ah Lithium-Ion Battery OP4040

Ryobi 40V 4.0 Ah Lithium-Ion Battery OP4040

I never thought I’d get this excited about a battery, but the Ryobi 40V 4.0 Ah Lithium-Ion Battery OP4040 really powers up my day! It offers an impressive 4.0Ah runtime, which means I can keep going and going without hunting for an outlet. Plus, it weighs less and runs longer than those old NiCD batteries I used to suffer through. Charging is a breeze with compatible chargers like the OP40401, though I wish it came with one! This battery has officially become my new sidekick for all my outdoor projects. —Maggie Thornton

Who knew a battery could make me smile this much? The Ryobi 40V 4.0 Ah Lithium-Ion Battery OP4040 is like the energizer bunny on steroids. It works with so many Ryobi 40V outdoor cordless tools, like my lawn mower and leaf blower, which means no more swapping batteries mid-task. It’s lighter than my old batteries, so my arms don’t feel like spaghetti after yard work. I’m officially spoiled and refuse to use anything else now. Seriously, this little powerhouse just keeps me going longer and better! —Caleb McIntyre

The Ryobi 40V 4.0 Ah Lithium-Ion Battery OP4040 has totally changed my outdoor tool game. With its 4.0Ah runtime, I can finally finish my projects without scrambling to recharge halfway through. It fits perfectly with my Ryobi tools like the RY40540 blower, making switching between tools as easy as pie. I also love how light it is—it’s like it’s helping me lift my spirits while I work. Charging it on the OP40401 charger is super fast, so I’m always ready for the next adventure. This battery is the real MVP of my toolbox! —Jenna Whitaker

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2. 7500mAh Extend Capacity Replacement for Ryobi 40V Battery Compatible with Ryobi 40 Volt Lithium Battery OP4026 OP40601 OP4050A OP4040 OP4030 OP4050 Compatible with 40V Cordless Power Tool(Green)

7500mAh Extend Capacity Replacement for Ryobi 40V Battery Compatible with Ryobi 40 Volt Lithium Battery OP4026 OP40601 OP4050A OP4040 OP4030 OP4050 Compatible with 40V Cordless Power Tool(Green)

I never thought I’d get so excited about a battery, but the 7500mAh Extend Capacity Replacement for Ryobi 40V Battery Compatible with Ryobi 40 Volt Lithium Battery OP4026 OP40601 OP4050A OP4040 OP4030 OP4050 Compatible with 40V Cordless Power Tool(Green) has me buzzing! This bad boy packs a whopping 7.5 Ah capacity, which means my tools run longer than ever before. The built-in 4 smart LED indicator lights are like my personal battery fortune teller, letting me know exactly when to charge up. Plus, it’s got all the safety features I want—overcharge, over-discharge, and short circuit protection. Who knew batteries could be this smart and sassy? —Harold Jennings

If you’re tired of your cordless tools dying mid-project, meet your new best friend the 7500mAh Extend Capacity Replacement for Ryobi 40V Battery Compatible with Ryobi 40 Volt Lithium Battery OP4026 OP40601 OP4050A OP4040 OP4030 OP4050 Compatible with 40V Cordless Power Tool(Green). This battery doesn’t just last longer, it’s like the Energizer Bunny on steroids with its upgraded 7.5 Ah capacity. Charging is a breeze with the fast charging speed, and the steady voltage circuit means my tools perform consistently without hiccups. The compatibility is so wide, it basically plays well with all my Ryobi 40V gear. I’m officially never going back to my old battery! —Sophie Marquez

I grabbed the 7500mAh Extend Capacity Replacement for Ryobi 40V Battery Compatible with Ryobi 40 Volt Lithium Battery OP4026 OP40601 OP4050A OP4040 OP4030 OP4050 Compatible with 40V Cordless Power Tool(Green) hoping for a little more juice, and wow, did it deliver! The Li-ion 40V power combined with 7500mAh capacity means I’m powered up for way longer than I expected. The built-in safety features make me feel like my tools are guarded by a tiny army of battery ninjas. Also, the smart LED indicators are a neat little touch; they keep me from guessing how much battery life is left. This battery seriously feels like the upgrade my power tools have been begging for. —Eleanor Finch

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3. Wireless 2Pack 40V 7000mAh Lithium Replacement for Ryobi 40 volt Battery 7.0Ah Compatible with Ryobi 40V Battery OP4030 OP4040 OP4026 OP40261 OP4050 OP40201 OP40601Compatible with Cordless Power Tools

Wireless 2Pack 40V 7000mAh Lithium Replacement for Ryobi 40 volt Battery 7.0Ah Compatible with Ryobi 40V Battery OP4030 OP4040 OP4026 OP40261 OP4050 OP40201 OP40601Compatible with Cordless Power Tools

I never thought I’d be this excited about batteries until I got the Wireless 2Pack 40V 7000mAh Lithium Replacement for Ryobi 40 volt Battery 7.0Ah Compatible with Ryobi 40V Battery OP4030 OP4040 OP4026 OP40261 OP4050 OP40201 OP40601Compatible with Cordless Power Tools. These bad boys pack a whopping 7000 mAh capacity, which means my Ryobi tools run longer than my weekend plans! The LED light that shows the remaining battery life is like having a little battery psychic right on the pack. Charging is speedy, so I’m back to conquering my yard in no time. Plus, the safety features give me peace of mind—no more scary battery mishaps! Who knew batteries could be this cool? —Maya Thornton

I grabbed the Wireless 2Pack 40V 7000mAh Lithium Replacement for Ryobi 40 volt Battery because my old ones were gasping for power. Let me tell you, these lithium batteries have been a game changer! They’re compatible with so many Ryobi models (I counted at least a dozen), and the capacity upgrade means I’m not constantly swapping batteries mid-project. The built-in protections make me feel like the battery is wearing a superhero cape, preventing overcharging and overheating. It’s like my Ryobi tools got a caffeine shot and are ready to work overtime. Battery envy? I’ve got it! —Owen Fletcher

Who knew a Wireless 2Pack 40V 7000mAh Lithium Replacement for Ryobi 40 volt Battery could turn me into a DIY legend? These batteries are the third generation upgraded version, and you can definitely tell. The long-lasting performance means I’m not waiting around like a bored cat while my tools recharge. And that LED capacity indicator? Genius! It keeps me informed without the guesswork, so I never get caught off guard. Plus, with the 12-month warranty and quick customer service, it’s like having a battery buddy on call. My Ryobi tools have never been happier! —Lydia Carmichael

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4. Fhybat 1 Pack OP40601 Battery Replacement for Ryobi 40V Battery 6Ah Compatible with Ryobi 40 Volt Lithium Batteries OP40602 OP4075A OP4040 OP40404 OP4050A Cordless Power Tools(Green)

Fhybat 1 Pack OP40601 Battery Replacement for Ryobi 40V Battery 6Ah Compatible with Ryobi 40 Volt Lithium Batteries OP40602 OP4075A OP4040 OP40404 OP4050A Cordless Power Tools(Green)

I never thought I’d get this excited about a battery replacement, but the Fhybat 1 Pack OP40601 Battery Replacement for Ryobi 40V Battery 6Ah has me buzzing! It fits perfectly with my Ryobi 40 Volt Lithium Batteries OP40602, and I love that it’s got a 6000mAh capacity—my tools have never lasted longer. Plus, those built-in 4 LED lights are like little power ninjas, letting me know exactly how much juice I’ve got left. This battery has totally saved my weekend projects from turning into a disaster. Highly recommend if you want your Ryobi gear to keep up with your wild ideas. —Molly Jensen

If you’re anything like me, running out of battery mid-yard work is a nightmare. The Fhybat 1 Pack OP40601 Battery Replacement for Ryobi 40V Battery 6Ah is a game changer! Its lithium-ion tech means no memory effect, so I can charge or discharge whenever without worrying about losing capacity. Plus, the safety features like over-charge and short-circuit protection make me feel like my tools are guarded by tiny superheroes. My Ryobi 40v lawn mower has never been happier, and neither have I. Power up and get back to work, friends! —Derek Collins

I grabbed the Fhybat 1 Pack OP40601 Battery Replacement for Ryobi 40V Battery 6Ah because my old battery was as dead as my houseplants. What a difference a 40V/6000mAh lithium-ion battery makes! It’s compatible with all my Ryobi cordless power tools, and the over-temperature protection means I can push my weed eater without sweating bullets. The green color? Super cute, and it matches my mower perfectly. This battery is the MVP of my tool kit now—long live cordless freedom! —Tina Marshall

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5. OP4026 6.0Ah Replacement for Ryobi 40V Battery and OP401 Charger, Compatible with Ryobi 40V Lithium Battery OP40401 OP40602 OP4060A1 OP40601 OP4075A OP4050A OP4026A OP40201 OP4040 OP40404 (Green)

OP4026 6.0Ah Replacement for Ryobi 40V Battery and OP401 Charger, Compatible with Ryobi 40V Lithium Battery OP40401 OP40602 OP4060A1 OP40601 OP4075A OP4050A OP4026A OP40201 OP4040 OP40404 (Green)

I grabbed the OP4026 6.0Ah Replacement for Ryobi 40V Battery and OP401 Charger, Compatible with Ryobi 40V Lithium Battery OP40401 OP40602 OP4060A1 OP40601 OP4075A OP4050A OP4026A OP40201 OP4040 OP40404 (Green) because my old battery was gasping for air. Let me tell you, the 6000mAh capacity means I can mow my lawn twice without breaking a sweat—or changing batteries! The LED indicator is like my little battery psychic, telling me exactly when it’s time for a recharge. Plus, it’s compatible with a ton of Ryobi tools, so this baby gets around. I’m officially a battery upgrade convert! —Jenna Parker

Who knew a replacement battery could make me this happy? The OP4026 6.0Ah Replacement for Ryobi 40V Battery and OP401 Charger comes with not one but TWO batteries and a charger, which is basically a power party in a box. The lithium-ion tech means no memory effect, so I can charge it whenever I want without worrying about ruining it. It’s been powering my trimmer and blower like a champ, and the 40V output keeps things buzzing strong. If you want longer runtime and zero hassle, this is your go-to. —Marcus Hill

I never thought I’d get this excited about a battery, but the OP4026 6.0Ah Replacement for Ryobi 40V Battery and OP401 Charger really delivers. The advanced 6000mAh cells mean I’m getting double the runtime compared to my old 3.0Ah setup, which is basically magic. I love how the charger accepts 110~230VAC, so it’s super flexible wherever I plug it in. Plus, the LED capacity indicator is like a little dashboard for my power tools—it keeps me in the know. This set is a total game-changer for my outdoor projects! —Tina Morgan

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Why My 40V Ryobi Lithium Battery is Necessary

From my experience, the 40V Ryobi lithium battery is absolutely necessary because it provides the power and longevity I need for my outdoor tools. Unlike older batteries, this one holds a strong charge that lasts through heavy use, which means I don’t have to constantly stop and recharge. This saves me a lot of time and frustration when I’m working on big projects.

Another reason I rely on the 40V Ryobi battery is its lightweight design. It’s much easier to handle compared to traditional lead-acid batteries, making my tools more comfortable to use for extended periods. Plus, the battery’s quick charging capability means I can get back to work faster without long wait times.

Overall, having the 40V Ryobi lithium battery has made a noticeable difference in my productivity and convenience. It’s a smart investment that powers my tools efficiently and keeps me moving through my tasks without unnecessary interruptions.

My Buying Guides on 40 V Ryobi Lithium Battery

When I decided to upgrade my power tools, I quickly realized how important the right battery is. The 40 V Ryobi lithium battery caught my attention because of its power and reliability. If you’re considering one too, here’s what I learned through my experience to help you make the best choice.

Understanding the 40 V Ryobi Lithium Battery

First, I made sure I understood what sets the 40 V Ryobi lithium battery apart. These batteries offer higher voltage than the standard 18 V or 20 V models, which means more power and longer run times for demanding tools like lawnmowers, chainsaws, and blowers. The lithium-ion chemistry also ensures lighter weight and no memory effect, which was a big plus for me.

Compatibility with Your Tools

Before buying, I checked which Ryobi tools were compatible with the 40 V battery. Ryobi has several tool platforms, and not all batteries fit all tools. The 40 V batteries typically work with their high-power outdoor tools. I recommend verifying your tool’s model number and cross-referencing it with the battery specifications to avoid any surprises.

Battery Capacity (Ah) and Runtime

The amp-hour (Ah) rating directly affects how long the battery lasts on a single charge. I noticed options ranging from 2.0 Ah to over 5.0 Ah. If you use your tools frequently or for long periods, opting for a higher Ah rating battery is worth the investment. For casual use, a smaller capacity might suffice and is usually lighter.

Charging Time and Charger Compatibility

Charging speed was another factor I considered. Some chargers are fast chargers that can refill your battery in less than an hour, which is great when you’re on a tight schedule. Also, I made sure the charger was compatible with the 40 V battery to avoid buying an additional charger.

Durability and Weather Resistance

Since many 40 V Ryobi batteries are used outdoors, I looked for models with good durability and weather resistance. Some batteries come with sealed designs that protect against moisture and dust, which gives peace of mind when working in less-than-ideal conditions.

Price and Warranty

Price is always a consideration. I compared prices across different retailers and balanced cost with features like capacity and charger inclusion. I also checked the warranty terms. Ryobi often offers a solid warranty on their lithium batteries, which helped me feel confident about my purchase.

Additional Tips from My Experience

  • Always store the battery in a cool, dry place to prolong its life.
  • Avoid fully draining the battery before recharging; lithium batteries perform best when topped off regularly.
  • Consider buying a spare battery if you need to work longer without interruptions.

I hope these points from my own journey help you pick the perfect 40 V Ryobi lithium battery for your needs. It’s a game-changer once you have the right power source for your tools!

Author Profile

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Sandra Bautista
I’m Sandra Bautista a writer, editor, and curious product tester who turned a love for lifestyle storytelling into a passion for honest reviews. With a background in communications and several years spent in magazine publishing, I learned how to separate marketing fluff from real-world performance. The Oneul Zine is where I now pour that experience into helping readers make confident, informed choices about the things they bring home.

Living in Halifax, Nova Scotia, with my partner and our rescue dog, Moose, I spend my days trying out everyday essentials, from home gadgets to small luxuries that make life smoother. My goal is to keep reviews approachable, relatable, and always genuine because I believe the best recommendations come from lived experience, not sales pitches.