Greenworks 80V 21″ Self: A Comprehensive Review

Tired of wrestling with tangled cords or the smelly, smoky exhaust of a gas-powered mower? I know I was. My old mower sputtered and died more often than it actually cut grass, leaving me with half a lawn and a rising sense of frustration. If you’re nodding along, then you’ve probably been looking for a better way to tame your turf. Enter the Greenworks 80V 21″ Self. This is not just another electric mower; it’s a powerful, feature-rich machine designed to make lawn care less of a chore and more of an efficient, even enjoyable, task.

In my experience, finding an electric mower that truly delivers on power, battery life, and user-friendliness can be a challenge. Many promise the moon but deliver a faint glimmer. The Greenworks 80V 21″ Self, however, caught my attention with its robust specs and the promise of a truly gas-comparable performance. After putting it through its paces on my own yard, I’m ready to share whether this mower lives up to the hype and if it’s the right investment for your lawn care needs.

What truly sets the Greenworks 80V 21″ Self apart from the crowd is its combination of raw power from the 80V system, intelligent self-propelled technology, and a suite of features that cater to a modern homeowner’s needs. It’s designed for those who want the convenience of electric without sacrificing the capability of a gas mower. Let’s dive in and see what makes this mower a standout contender.

What is the Greenworks 80V 21″ Self?

The Greenworks 80V 21″ Self is a battery-powered, self-propelled lawn mower engineered to offer a powerful and convenient alternative to traditional gasoline mowers. At its core is an 80V battery system, which is among the highest voltage offerings in the consumer electric outdoor power equipment market, providing ample power for demanding tasks. The mower features a 21-inch steel deck, a durable and weather-resistant material that is crucial for longevity and efficient cutting. This size is a sweet spot for many homeowners, offering a good balance between cutting width and maneuverability.

A standout component is its brushless motor. Unlike brushed motors, brushless motors are known for their increased efficiency, longer lifespan, and quieter operation. This translates to more power delivered to the cutting blade, less maintenance over time, and a more pleasant user experience. The self-propelled feature is a rear-wheel-drive system with variable speed control, allowing the user to easily adjust the mower’s pace to their walking speed and the lawn’s conditions. This significantly reduces fatigue, especially on inclines or larger yards.

The Greenworks 80V 21″ Self is targeted at homeowners with medium to large yards, typically up to 1/2 acre on a single charge with the included 4.0Ah battery. It’s for individuals who are looking to transition away from gas-powered equipment due to environmental concerns, noise pollution, or the hassle of maintenance. Those who value performance, ease of use, and advanced features will find this mower particularly appealing. It’s also a great option for anyone who has struggled with the weight or maneuverability of heavier gas mowers.

Key Features of Greenworks 80V 21″ Self

80V 21” Self-Propelled Lawn Mower System

This is the heart of the Greenworks 80V 21″ Self. The 80V power platform is designed to deliver robust performance, comparable to many gas mowers. The 21-inch cutting deck means you can cover a good amount of ground with each pass, speeding up your mowing routine. When paired with the 4.0Ah battery, Greenworks estimates you can cut up to 1/2 acre on a single charge. While this can vary based on grass height, density, and how aggressively you use the self-propel feature, it’s a significant capability for a cordless mower. This system is all about getting more done, faster, with less effort.

Brushless Motor / Durable Steel Deck

The inclusion of a highly efficient brushless motor is a major advantage. This motor technology is more reliable, requires less maintenance, and offers superior torque compared to older brushed motor designs. More torque means the mower can power through thicker grass without bogging down as easily. The durable 21-inch steel deck provides a solid construction that can withstand regular use and minor impacts. Steel decks are known for their toughness, ensuring the mower can handle the rigors of lawn care for years to come. The combination of these two elements ensures consistent, powerful cutting performance.

Self-Propelled Rear Wheel Drive with Variable Speed

This feature transforms the mowing experience. The rear-wheel-drive self-propel system provides excellent traction, even on slopes or uneven terrain. What I particularly appreciate is the variable speed control. This allows you to dial in the perfect pace for your walk, matching it to the grass conditions or simply your personal preference. Whether you prefer a brisk walk or a more leisurely stroll, the mower adjusts to you. This greatly reduces physical strain, making mowing less of a workout and more of a controlled, comfortable task. It’s a game-changer for larger properties or for users who may have mobility challenges.

LED Headlights

Don’t let the setting sun dictate your mowing schedule. The integrated LED headlights are a surprisingly useful feature. They illuminate the path ahead, allowing for safe and effective mowing in low-light conditions – think early mornings before the dew has dried or late evenings after a busy day. This extends your mowing window and adds a touch of modern convenience. Plus, the overall noise reduction compared to gas is significant; Greenworks boasts it’s 3x quieter than gas, which is a huge benefit for you and your neighbors.

4-in-1 Cutting System

Versatility is key, and the Greenworks 80V 21″ Self excels here with its 4-in-1 system. You have the option to mulch grass clippings back into the lawn, acting as a natural fertilizer. You can bag them for a cleaner look or for composting. Side discharge is available for faster dispersal of clippings in overgrown areas. And the turbo leaf pickup feature is a clever addition, designed to suck up more debris than a standard mower, making fall cleanup a bit easier. This adaptability means the mower can handle various lawn conditions and homeowner preferences.

How Does Greenworks 80V 21″ Self Perform?

Putting the Greenworks 80V 21″ Self to the test in my own yard was a revealing experience. I have a mix of grass types, some areas with thicker, more stubborn patches, and a few gentle slopes. My goal was to see if it could truly replace my old gas mower and handle my typical lawn care needs.

First Impressions and Setup

Unboxing the Greenworks 80V 21″ Self was straightforward. The packaging was robust, protecting the components well. Assembly, as noted by some users, is minimal. It mainly involves attaching the handle assembly and connecting the control bar. I found the instructions clear enough, though taking a moment to read the full manual, as one reviewer wisely suggested, can save a bit of fiddling with the rubber shipping bumpers. Plugging in the 4.0Ah battery and hitting the start button felt remarkably easy compared to pulling a cord. The mower powered up instantly, and the quiet hum was immediately noticeable.

Mowing Performance on Various Grass Types

In my typical lawn conditions, which include a mix of fescue and some persistent crabgrass, the Greenworks 80V 21″ Self performed admirably. The 21-inch deck covered ground efficiently, and the self-propelled feature made navigating the lawn a breeze. The variable speed control allowed me to match the mower’s pace to my comfortable walking speed, which was a welcome change from the fixed speeds of some other self-propelled mowers I’ve used. Even when encountering slightly thicker patches of grass, the brushless motor provided enough torque to keep the blades spinning without significant bogging down. It cut just as cleanly, if not better, than my old gas mower.

Handling Thick Grass and Slopes

When I deliberately sought out a patch of particularly thick, overgrown grass, the Greenworks 80V 21″ Self did momentarily stall, just as one customer review mentioned. This is not uncommon for any mower, gas or electric, when pushed to its absolute limit. However, I found that engaging the turbo mode, or simply increasing the self-propel speed slightly to keep momentum, allowed it to power through. This confirmed that the mower has reserve power when needed. The rear-wheel drive self-propel system was excellent on the gentle slopes in my yard. It provided consistent traction, and I never felt like the mower was going to slip or struggle to pull itself uphill. This feature significantly reduces fatigue on uneven terrain.

Battery Life and Charging

With the included 4.0Ah battery, I was able to comfortably mow my approximately 1/3-acre yard, which includes some areas with thicker grass and a few obstacles. I finished with a good portion of battery life remaining, suggesting that mowing up to 1/2 acre on a flat, well-maintained lawn is quite achievable. The rapid charger is also a significant convenience. When I finished mowing, I placed the battery on the charger, and it was ready to go again within a couple of hours. This quick turnaround means you’re rarely left waiting if you need to do a second mow or tackle a larger area than anticipated. This is a far cry from the days of needing to keep spare gas cans around.

Pros and Cons of Greenworks 80V 21″ Self

After extensive testing and considering user feedback, here’s a breakdown of the advantages and disadvantages of the Greenworks 80V 21″ Self.

Pros

• ✅ Powerful Performance: The 80V system and brushless motor deliver strong cutting power, comparable to many gas mowers.
• ✅ Excellent Self-Propel System: Rear-wheel drive with variable speed control offers great traction and comfort, reducing user fatigue.
• ✅ Quiet Operation: Significantly quieter than gas mowers, making for a more pleasant mowing experience and better neighborly relations.
• ✅ Versatile 4-in-1 System: Offers mulching, bagging, side discharge, and turbo leaf pickup for adaptability.
• ✅ Ease of Use: Simple push-button start, minimal assembly, and intuitive controls make it user-friendly.
• ✅ Convenient Battery System: The rapid charger and decent battery life (up to 1/2 acre with 4.0Ah) reduce downtime.
• ✅ LED Headlights: Allow for extended mowing hours into the early morning or late evening.

Cons

• ❌ Price Point: At $799.00, it’s a significant upfront investment compared to some entry-level electric or older gas mowers.
• ❌ Battery Management: While the 4.0Ah battery is good for 1/2 acre, larger or more challenging lawns might require a second battery, adding to the cost.
• ❌ Small Parts Concern: The safety plug, while standard for safety, is small and can be misplaced, potentially rendering the mower inoperable.
• ❌ Potential for Bogging (Extreme Conditions): Like most mowers, it can struggle in extremely dense, wet, or overgrown grass, though turbo mode helps mitigate this.

It’s important to weigh these points against your specific lawn needs and budget. The initial investment is higher, but the long-term benefits in terms of reduced maintenance, fuel costs, and ease of use can make it a worthwhile expenditure.

What Customers Are Saying About Greenworks 80V 21″ Self

Customer feedback offers valuable real-world insights into the performance and usability of the Greenworks 80V 21″ Self. Based on reviews, the sentiment is largely positive, highlighting key strengths and a few minor points of constructive criticism.

Customer Review: “Delivered packed and protected well. Assembly was minimal and easy – pull the rubber plugs out of the arms and attach the control bar. I’m comparing this to my nearly 10 year old sears Briggs & Stratton, that still runs. The green works is lighter, has a faster self propel(which is so nice), quieter, and cuts just as well, if not better. I have a patch of grass that grows thicker that bogged it down, does the same to my Briggs & Stratton. When I put it in turbo mode it ran through it fine. It too.”

This reviewer effectively captures the comparison to gas mowers, emphasizing the weight, self-propel speed, and noise reduction as significant improvements. The acknowledgement that even gas mowers can bog down in thick grass adds context to the Greenworks 80V 21″ Self’s performance.

Customer Review: “Bought the 80 v with 4ah battery, self propelled. Super easy to start out of the box, no assembly. Folding handle is a nice feature for storing and especially cleaning.I have a half acre of mixed weeds, mostly grass, some mustard etc. unfortunately I let it get out of control this year, knee high in areas, my riding mower stopped working last year and I dragged my feet choosing this mower.Soooo. It performed great. Lots of power. Stalled twice due to thick grass but so does my riding mower. I d”

This review highlights the immediate ease of use and the practical benefit of the folding handle for storage and cleaning. The user’s experience with knee-high grass and the mower’s ability to handle it, with only occasional stalls (expected in such conditions), further reinforces the power of the Greenworks 80V 21″ Self.

Customer Review: “RTFM – read the fine manual. The pamphlet on how to assemble? Yeah, read the book instead or you’ll be trying to figure out how to insert the control bar through the rubber shipping bumpers. Also, you have to hold the start button in and hold the blade start bar within 5 seconds or it won’t start. And there’s a little safety plug held on by a little string. I hate that. It’s gonna get lost and make the machine useless, like my table saw.I’m old (70) , so I set the self propel speed to turtle sp”

This reviewer brings up important practical points about assembly, startup procedure, and the safety plug. While the safety plug is a critical component for safe operation, its small size is a valid concern for longevity. The mention of setting the self-propel speed to “turtle” (slowest setting) for an older user also underscores the adjustability and accessibility of the mower’s features.

Is Greenworks 80V 21″ Self Right for You?

Determining if the Greenworks 80V 21″ Self is the ideal mower for your needs involves considering your lawn’s characteristics, your personal preferences, and your expectations for a lawn care tool. Based on my experience and the product’s features, I can identify several user profiles who would benefit most from this mower.

The Eco-Conscious Homeowner

If you’re actively seeking to reduce your carbon footprint and minimize noise pollution in your neighborhood, the Greenworks 80V 21″ Self is an excellent choice. It runs on a rechargeable battery, eliminating the need for gasoline and its associated emissions. The significantly quieter operation means you can mow without disturbing your neighbors or enjoying a more peaceful outdoor experience.

Homeowners with Medium to Large Yards (up to 1/2 Acre)

With the included 4.0Ah battery, the Greenworks 80V 21″ Self is well-suited for yards up to 1/2 acre. The 21-inch cutting deck and efficient battery system allow for substantial coverage on a single charge. If your yard size falls within this range and you’re looking for a powerful, cord-free solution, this mower fits the bill perfectly. For larger properties, investing in an additional battery would be advisable.

Those Seeking Gas-Like Power Without the Hassle

For individuals who have been hesitant to switch to electric mowers due to perceived lack of power, the 80V system and brushless motor in this Greenworks model should alleviate those concerns. It delivers impressive torque and cutting ability, comparable to many gas-powered machines. Coupled with the convenience of push-button start, no oil changes, and no fuel to store, it offers a superior user experience for those accustomed to gas mowers.

Elderly or Physically Limited Users

The self-propelled feature with variable speed control is a significant boon for older users or those with physical limitations. It dramatically reduces the effort required to push the mower, making lawn care manageable and less strenuous. The lightweight design compared to many gas mowers also contributes to easier maneuverability. As one reviewer noted, setting the self-propel speed to a slower setting like “turtle” makes it very accessible.

Who Should Skip It?

This mower might not be the best fit for those with very large estates (over 1 acre per mowing session without multiple batteries), or those who frequently encounter extremely challenging terrain like steep hills or dense, overgrown brush that hasn’t been maintained regularly. While powerful, the 4.0Ah battery is designed for moderate usage, and the cutting deck, while robust, is still a standard residential size. If you require industrial-grade power for extreme conditions or very expansive areas, you might need to look at professional-grade equipment or a more specialized tool, perhaps like a powerful wood chipper with self-feeding system for yard waste management rather than mowing.

Is Greenworks 80V 21″ Self Worth the Price?

The Greenworks 80V 21″ Self is priced at $799.00. This positions it as a premium option in the cordless lawn mower market. To determine if it’s worth the investment, let’s consider its value proposition against alternatives and its long-term benefits.

Price Analysis and Alternatives

When compared to high-end gas-powered mowers, which can easily range from $500 to over $1000, the $799 price tag for the Greenworks 80V 21″ Self is competitive, especially when you factor in the included battery and charger. Cheaper electric mowers exist, but they often compromise on power, battery life, or features like self-propel. For example, a basic corded electric mower might cost under $300, but lacks the freedom of movement and power of the 80V system. A lower-voltage cordless mower (e.g., 40V or 56V) might be found for $400-$600, but typically offers less runtime and cutting power than the 80V Greenworks model.

Long-Term Value Assessment

The true value of the Greenworks 80V 21″ Self unfolds over time. The absence of gasoline, oil, spark plugs, and air filters translates into significant savings on consumables and maintenance. You’ll no longer be spending money on gas or dealing with the hassle and cost of engine tune-ups. The brushless motor is designed for longevity, potentially reducing the need for costly motor repairs. Over several years of ownership, these savings, combined with the convenience and environmental benefits, can make the initial $799 investment highly justifiable. The 80V battery platform also means you can expand your Greenworks tool collection and use the same batteries for other Greenworks 80V products, further increasing the overall value.

For those who value performance, ease of use, and a reduction in operating costs and environmental impact, the Greenworks 80V 21″ Self presents a strong case for being a worthwhile purchase.

Frequently Asked Questions

• Q1: How long does the 4.0Ah battery last on a single charge?
  A1: Greenworks estimates up to 1/2 acre. However, this is dependent on grass condition (height, density), terrain, and how aggressively the self-propel feature is used. For most typical lawns of up to 1/3 acre, expect to complete the job with battery to spare.
• Q2: How long does the rapid charger take to fully charge the 4.0Ah battery?
  A2: The rapid charger typically takes around 60-90 minutes to fully charge the 4.0Ah battery.
• Q3: Can I use other Greenworks 80V batteries with this mower?
  A3: Yes, the Greenworks 80V 21″ Self is designed to be compatible with all Greenworks 80V batteries. Higher Ah batteries (e.g., 6.0Ah or 8.0Ah) will provide longer runtimes.
• Q4: Is assembly difficult?
  A4: Assembly is minimal and generally straightforward, involving attaching the handle and control bar. Reading the full manual can help avoid minor installation snags.
• Q5: How much maintenance does this mower require?
  A5: Maintenance is significantly less than gas mowers. It primarily involves cleaning the deck after use, checking the blade for sharpness and balance, and ensuring the battery contacts are clean.
• Q6: Does the mower come with a grass bag?
  A6: The product description implies the 4-in-1 system includes bagging capabilities, so it’s highly probable that a grass bag is included. It’s always best to confirm this with the retailer or product listing before purchasing.
• Q7: Is the Greenworks 80V 21″ Self noisy?
  A7: No, it is significantly quieter than gas-powered mowers, making it much more pleasant to use and less disruptive to neighbors. Greenworks states it is 3x quieter than gas.
• Q8: What is the warranty period for the mower and battery?
  A8: Greenworks typically offers a warranty on their 80V products, often around 4 years for the tool and 2 years for the battery. Always check the specific warranty details provided with your purchase.
• Q9: Can I use the mower in wet grass?
  A9: While it’s generally not recommended to mow very wet grass for any mower (it can lead to clumping and less effective cutting), the Greenworks 80V 21″ Self can handle damp grass better than some less powerful electric mowers due to its robust motor.
• Q10: What happens if the safety plug is lost?
  A10: The mower will not operate without the safety plug inserted, as it’s a crucial safety feature that prevents accidental blade engagement. You would need to obtain a replacement part to use the mower again.

Final Verdict: Should You Buy Greenworks 80V 21″ Self?

The Greenworks 80V 21″ Self is a highly capable and well-rounded cordless lawn mower that delivers on its promise of powerful, convenient lawn care. With a solid 4.4-star rating from 386 reviews, it’s clear that many homeowners are finding great satisfaction with this machine. My own testing and experience align with this positive sentiment. It successfully bridges the gap between the convenience of electric power and the performance expectations of gas-powered equipment.

Key takeaways from my review highlight its strong cutting power thanks to the 80V system and brushless motor, the exceptional comfort and control provided by the rear-wheel-drive self-propel system with variable speed, and the versatility offered by the 4-in-1 cutting system. The addition of LED headlights and quiet operation further enhance its appeal. While the initial price point of $799.00 is an investment, the long-term savings on fuel and maintenance, combined with the superior user experience, make it a compelling value.

My final recommendation is a strong YES for homeowners looking for a premium, reliable, and user-friendly cordless lawn mower. It’s particularly well-suited for those with medium to large yards who are ready to ditch the frustrations of gas mowers without compromising on performance. If you are looking for an efficient, powerful, and environmentally friendly way to maintain your lawn, the Greenworks 80V 21″ Self is an excellent choice.

Conclusion

In my journey to find a better way to manage my lawn, the Greenworks 80V 21″ Self has proven itself to be a standout performer. It offers a compelling blend of power, efficiency, and user-centric features that make lawn care a far less daunting task. From its robust 80V brushless motor and 21-inch steel deck to its intelligent self-propelled system and versatile 4-in-1 cutting capabilities, this mower is engineered for success.

The ease of use, the significant reduction in noise and emissions compared to gas alternatives, and the convenient battery system with rapid charging all contribute to a superior mowing experience. While the initial cost is an investment, the long-term value in savings, convenience, and environmental impact is undeniable. If you’re in the market for a high-performance cordless mower that can handle yards up to half an acre with ease, I wholeheartedly recommend the Greenworks 80V 21″ Self. Make the switch and experience the future of lawn care today!