Greenworks 40V Self-Propelled Lawn Mower Review: Cutting Edge Performance

Greenworks 40V 21" Deck Review

When it comes to keeping your lawn looking sharp and tidy without the noise, fuss, and fumes of gas-powered mowers, the Greenworks 40V 21″ Brushless Lawn Mower steps up to the challenge with impressive gusto. Designed for homeowners who want excellent cutting performance and user-friendly features, this mower promises to make your grass-cutting chores less of a grind and more of a breeze. Featuring a 21″ poly deck and powered by a 5.0Ah battery, it touts a brushless motor and a thoughtful 3-in-1 design to bag, mulch or side discharge your clippings. But is it the cordless lawn mower hero you’ve been waiting for? Let’s dig into the blade and battery details to find out.

Greenworks 40V 21" Brushless Cordless (Self-Propelled) Lawn Mower
$479.99
Buy Now
We earn a commission if you make a purchase, at no additional cost to you.
09/23/2025 09:15 am GMT

Key Features that Make Greenworks 40V Mower Stand Out

The Greenworks 40V mower impresses right out of the box with its array of features designed to upgrade your lawn care experience:

  • 21” Poly Deck: At 21 inches wide, the cutting deck strikes a balance between covering good ground quickly and maneuvering easily around tight spaces.
  • 3-In-1 Design for Mulching and Bagging: You’re in control of how you handle grass clippings. Want to mulch them back into the soil for a natural fertilizer effect or collect them for composting or easy disposal? The mower lets you switch effortlessly.
  • Dual Battery Ports With Automatic Switchover: This is one of the most convenient aspects—a second battery slot ensures continuous operation without downtime. When the first battery runs low, the mower automatically switches to the second. This feature is a boon for larger yards or extended mowing sessions.
  • Adjustable Blade height: Customize your cut height easily with a single handle spanning multiple positions, allowing you to adapt to different grass types and conditions.
  • Push Button Start & Self-Propelled Drive: No more yanking starter cords; just press the button and the mower is ready to go. The self-propelled feature makes traversing slopes and uneven terrain much more manageable, reducing fatigue.
  • Warranty: A solid 3-year tool & battery warranty indicate Greenworks’ confidence in its build quality and durability.

Cutting Performance & Battery Life: The Good, The Bad, and The Blade

Cutting Grass: It Handles Slopes and Saint Augustine Grass Like a Pro

Owners of the Greenworks 40V mower consistently praise its cutting ability. Multiple users report that the mower excels on sloped yards where maneuverability and self-propelling power really come into play. Those with Saint Augustine grass, known for its coarse texture, note that the mower delivers an impressively even cut without missing spots or leaving ragged edges.

Customers also love the ease of switching between mulching and bagging—two vital options for different lawn care goals. The adjustable blade height adjustment helps users tune the cut precisely to their preference, accommodating various grass heights and conditions seamlessly.

Battery Life: A Mixed Bag of Power and Patience

Battery-powered tools often face scrutiny over juice duration, and the Greenworks 40V mower is no exception. Feedback on battery life varies, painting a picture of both strengths and weaknesses:

  • Positive Feedback: Some users report that the 5.0Ah battery comfortably powers through their entire mowing job on a single charge. The ability to swap in a second battery seamlessly means less stopping and starting, which is highly appreciated. Also, a recharge time of about two hours is considered reasonable for many.
  • Critical Feedback: On the flip side, certain customers experience shorter run times, with batteries lasting only about 40 minutes in some cases. A few report frustrating charging quirks such as the battery not accepting a charge immediately after mowing, which could delay use. This variability might depend on grass conditions, terrain, or battery age.

The automatic dual battery port system aims to alleviate battery-life anxiety, but some users caution that having just one battery may limit the mower’s utility for larger lawns.

Greenworks 40V 21" Brushless Cordless (Self-Propelled) Lawn Mower
$479.99
Buy Now
We earn a commission if you make a purchase, at no additional cost to you.
09/23/2025 09:15 am GMT

Pros & Cons

Pros:

  • Powerful self-propelled drive that handles slopes and thick grass with ease.
  • Enjoyable cutting performance, especially on Saint Augustine grass.
  • Lightweight and compact design saves space in your garage or shed.
  • Dual battery ports reduce downtime via automatic switchover.
  • Simple push-button start eliminates recoil hassles.
  • Versatile 3-in-1 deck for mulching, bagging or side discharge.
  • Good warranty coverage underscores product reliability.
  • Positive value-for-money ratings from many users.

Cons:

  • Battery life consistency varies, with some reporting shorter-than-expected runtimes.
  • Occasional issues with batteries not charging immediately after use.
  • The self-propelled feature requires user familiarity to maximize smooth operation.

Who Is It For?

This mower is perfect for homeowners with small to medium-sized yards who appreciate cordless convenience and a manageable yet effective cutting width. If your lawn has slopes or uneven terrain, you’ll benefit from the power and control of the self-propelled drive. Owners of Saint Augustine or similar grass types will find this mower adept at delivering a clean cut.

Those who value versatility in handling clippings—deciding between mulching and bagging—will enjoy the 2-in-1 design. But if you have a very large property, consider having a second battery on hand or assessing if the runtime meets your needs.

This mower is also well suited to anyone who prefers a lightweight tool that saves storage space yet feels substantial and sturdy when mowing.


Final Thoughts

The Greenworks 40V Brushless Lawn Mower hits many of the right notes that modern cordless mowers aim for—power, ease of use, versatility, and a respectable warranty. Its cutting prowess on slope-heavy yards and tougher grass varieties wins over many users. The self-propelled feature makes lawn work less taxing, especially for those who dread the push-and-pull ritual with manual mowers.

Battery life remains a divisive topic: some users report no trouble mowing from start to finish, while others encounter frustrating shortfalls and charge delays. This inconsistency means prospective buyers should consider their yard size and be ready with a backup battery or charging plan if needed.

Overall, if you’re looking for a well-balanced cordless mower that merges strong cutting ability with lightweight, nimble handling and modern conveniences, the Greenworks 40V mower deserves a serious look. It delivers solid value and thoughtful features that can turn lawn mowing from drudgery into a surprisingly smooth, even fun, experience.

So, if you want a cordless mower that’s got the cutting edge — both literally and figuratively — the Greenworks 40V might just be your new lawn’s best friend!

Purchase the Greenworks 40V Lawn Mower

Greenworks 40V 21" Brushless Cordless (Self-Propelled) Lawn Mower
$479.99
Buy Now
We earn a commission if you make a purchase, at no additional cost to you.
09/23/2025 09:15 am GMT

Tekkbyte.com participates in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for sites to earn advertising fees by advertising and linking to Amazon.com