I never thought switching to a battery-powered mower would change the way I feel about yard work—but it did. I’ve used the 40V 20″ Cordless Battery Dual Blade Push Lawn Mower for over a year now in Charlotte, North Carolina, where the grass grows fast and thick. What I found was surprisingly smooth, quiet, and powerful. After years of dragging cords and wrestling with gas engines, this felt like mowing in easy mode. If you’ve got a small yard and thick grass like I do, this might be the shift you didn’t know you needed. Let me walk you through what makes this mower a solid pick—and where it might fall short.
My Real Life Experience: 40V 20″ Cordless Battery Dual Blade Push Lawn Mower Review
I live in Charlotte, North Carolina, where the grass grows thick and fast—especially in summer. So I’ve put this mower through some serious real-world tests. I’ve used it in dry heat, after rain, on short grass, tall grass, and even uneven ground. Below is a point-by-point breakdown of my hands-on experience so you can get a clear, honest picture.
Battery Test
- With the 4.0Ah and 2.0Ah batteries combined, I usually get 50 to 55 minutes of runtime.
- On thicker or damp grass, it drops closer to 40 minutes.
- The auto battery switch is seamless—you don’t even notice when it changes over.
- Charge time is a bit slow (2 hours for the big one, 1 hour for the small), so plan ahead.
Battery Rating: 8/10
(Strong runtime and smooth switch-over, but slower charging holds it back a bit.)
RPM (Blade Speed) Test
- The mower has Smart Cut tech, which ramps up blade speed when it senses tougher grass.
- I didn’t measure RPM manually, but I could hear and feel the change in power during mowing.
- The dual blade system cuts clean and even, leaving behind a fine mulch and smooth finish.
Blade Speed Rating: 8.5/10
(Smart response and clean cuts—just wish there were more user feedback or display.)
Noise Level Test
- It’s way quieter than any gas mower I’ve owned.
- I checked with a mobile app and got around 74–78 dB while mowing.
- The sound is steady and low—not annoying or high-pitched, and great for early morning use.
Noise Level Rating: 9.5/10
(Quiet, calm, and backyard-friendly. One of its best features.)
Speed & Maneuverability Test
- It’s lightweight, so pushing it is easy—even uphill or around garden beds.
- The 10″ rear wheels and 7″ front wheels offer great balance and control.
- It’s not self-propelled, but unless your yard has a lot of slopes, you won’t miss it.
Maneuverability Rating: 8/10
(Easy to handle and steer, though it loses a point for not being self-propelled.)
Brand Insights & Experience
- Greenworks is clearly aiming to be the go-to brand for clean, battery-powered lawn care.
- Their 40V platform powers over 75 tools—so you can trim, blow, and edge with the same battery.
- In my experience, their batteries last long and cut clean, though charge times could be faster.
- The deck is plastic, which keeps it light, but may show wear over time if you’re rough with it.
Brand & Build Quality Rating: 8.5/10
(Reliable battery platform and strong brand mission. A few durability trade-offs for lightness.)
What I Struggled With
Switching from gas to electric felt like trading in a truck for a bicycle—lighter and easier, but not without its limits. My biggest struggle was the battery charge time. If I forgot to charge the night before, I had to wait around. The mower isn’t self-propelled either, so while it’s light, it still takes a bit more effort on slopes. And while the plastic deck keeps it light, I worry about long-term durability if you’re rough on tools.
What’s Good
This mower is refreshingly quiet and easy to use. The dual blade system really does make a difference in cut quality—I noticed fewer missed spots and less clumping, even in tall grass. The automatic battery switchover is a game-changer. You mow until the job’s done without stopping to swap anything. It folds down nicely, which is perfect if your garage space is tight like mine. And honestly, not smelling like gas after mowing? Huge win.
What’s Not So Great
It’s not made for large or hilly yards. If your lawn takes more than an hour or includes steep slopes, you might feel the limits. Also, while the runtime is decent, it’s not unlimited—you’ll either need a backup battery or a bit of patience. The deck, though strong enough for regular use, is plastic. It does the job, but metal would’ve added extra confidence.
What to Expect
Expect a quiet, clean, low-maintenance mowing experience that’s perfect for small to mid-sized lawns. It won’t roar like a gas mower, but it gets the job done with a quiet determination. Think of it like a smart hybrid car—it’s not built for raw power, but it’s efficient, reliable, and surprisingly capable. Expect to fall in love with the simplicity.
How It Could Be Better
Faster battery charging would make this mower nearly perfect. A self-propel feature would help on uneven yards. And upgrading the deck from plastic to lightweight metal could improve durability without sacrificing weight. Still, for the price and convenience, it holds up well.
What I Like About This
I love how quiet it is—no need for earplugs. The push-button start feels like starting a laptop, not a lawn mower. It’s clean, green, and doesn’t leave you smelling like oil. I also like that the same battery fits other Greenworks tools. I use the same pack for my trimmer and blower, and that’s super convenient. It’s like having one fuel source for all your yard work.
Alternative Option: RYOBI 40V HP Brushless 20″ Push Mower Review
I’ve been using battery-powered mowers for years. I’ve tested many brands across different lawns, weather, and grass types. Though Greenworks is my go-to at home in Charlotte, I also tried the RYOBI 40V HP Brushless 20″ Push Mower. I used it on a few weekend cuts at my cousin’s place. It gave me a good feel for how it performs and how it compares to my Greenworks.
Battery Powered RYOBI Push Mower
I used this RYOBI mower on a small suburban yard. It had thick spots, dry areas, and some rough edges. The battery lasted well and cut clean. It ran quietly and was easy to move. Greenworks and RYOBI are both good picks, but they work a bit differently.
Battery Comparison
| Feature | Greenworks 40V Dual Blade | RYOBI 40V HP Brushless |
| Runtime | Around 55 minutes | Around 45–50 minutes |
| Battery Switch | Automatic | Manual |
| Charge Time | 1–2 hours | About 1.5 hours |
| Tool Compatibility | Yes (75+ tools) | Yes (50+ tools) |
| Battery Indicator | On mower and battery | On battery only |
Quick Note: Greenworks lasts longer and swaps batteries on its own. RYOBI needs you to do it by hand. Both are great for small yards.
RYOBI HP Brushless Mower Features
The RYOBI mower felt strong. It handled thick grass without slowing down. The brushless motor helps it push through rough patches. I noticed it cut fast, but it did eat up the battery a bit quicker. For dense grass, that power is helpful.
Build & Features Comparison
| Feature | Greenworks 40V Dual Blade | RYOBI 40V HP Brushless |
| Motor | Standard Brush Motor | High-Performance Brushless |
| Blades | Two blades | One blade |
| Cutting Width | 20 inches | 20 inches |
| Height Adjustment | 5-position lever | 7-position lever |
| Handle | Folds for storage | Folds and adjusts |
| Deck Material | Plastic | Plastic with metal edges |
Quick Note: RYOBI is a bit more powerful, while Greenworks cuts smoother with two blades. RYOBI shines on tough spots, but Greenworks gives a cleaner finish.
Quiet Electric Lawn Mower RYOBI
Both mowers are quiet. That’s one reason I like them. I used the RYOBI early in the day. It didn’t wake anyone. The sound changed a bit in thick grass, but never got too loud. Greenworks was a little smoother, but not by much.
Noise & Comfort Comparison
| Feature | Greenworks 40V Dual Blade | RYOBI 40V HP Brushless |
| Average Noise Level | 74–78 dB | 75–80 dB |
| Vibration | Low | Low to Medium |
| Starting | Push-button | Push-button |
| Weight | About 42.5 lbs | About 52 lbs |
| Handling | Easy | Smooth but heavier |
Quick Note: Both are quiet. Greenworks feels lighter. RYOBI is a bit louder when it hits thick grass, but still way better than gas.
FAQ Section
Q1: What makes the 40V 20″ Cordless Battery Dual Blade Push Lawn Mower different?
This mower uses dual blades for a cleaner cut and runs quietly on battery power. Learn more about its features and benefits.
Q2: How long does the battery last on this mower?
The included batteries offer about 50 to 55 minutes of runtime, depending on grass thickness. Find out how it performs in real use.
Q3: Is the 40V 20″ Cordless Battery Dual Blade Push Lawn Mower good for small yards?
Yes, it’s ideal for yards up to 1/3 acre, offering easy handling and solid cutting power. Explore if it suits your lawn size.
Q4: How noisy is this cordless dual blade mower?
It runs much quieter than gas mowers, around 74–78 decibels, making early morning mowing neighbor-friendly.
Q5: Does this mower need a lot of maintenance?
No gas or oil changes are needed, and the battery system simplifies upkeep. Learn more about care tips for longer use.
My Final Thoughts on Greenworks
If you’re someone who loves a quiet, lightweight mower that’s easy to start and simple to store, this could be a great fit. But if you need raw power for steep slopes or oversized lawns, you might want to explore heavier-duty options. For small to mid-sized yards like mine in Charlotte, the 40V 20″ Cordless Battery Dual Blade Push Lawn Mower has been a real stress-saver. It’s not perfect, but it made mowing feel less like a chore—and more like checking something off the list with ease.
Read More: My Honest Review of the 40V 21″ Cordless Battery Lawn Mower (Tested 30+ Times)