Greenworks 21-Inch Mowers: Direct Comparison of Top Options

As Amazon Associates, we earn from qualifying purchases. This means we may receive a small commission at no extra cost to you if you click through and make a purchase.

Selecting the right greenworks 21 inch mower requires navigating distinct battery voltages, drive mechanics, and cutting deck layouts designed for different yard topographies. Busy homeowners and property managers evaluating which greenworks lawn mower to buy often face trade-offs between physical pushing effort, battery runtimes, deck construction durability, and power tool ecosystem compatibility. A 21-inch cutting deck provides a practical balance between broad cutting coverage and nimble handling around garden beds, yet matching the motor output and drive configuration to property acreage prevents unnecessary recharging delays and operator exhaustion.

The brand categorizes its battery-powered lineup into three prominent voltage families: the 24V/48V dual-battery system, the prosumer-grade 60V platform, and the heavy-duty 80V platform. While push-type models maximize runtime efficiency and reduce machine weight on level suburban turf, self-propelled rear-wheel drive variants deliver essential mechanical assistance across slopes, damp turf, and uneven grades. Comparing deck materials, multi-battery bundles, and discharge versatility across these greenworks 21 inch mower models ensures you acquire the exact power level your lawn requires without buying unneeded battery platforms.

Criteria matrix What each model in this report is credited with

Rows are the criteria that come up in the pros and cons listed for this lineup. A check means the criterion is named in this report’s write-up of that model; a dash means it is not. Criteria that apply to every model, or to only one, are left out because they separate nothing.

Criterion	Greenworks 48V 9.4/10	Greenworks 60V 21in Push 8.4/10	Greenworks 80V 21in Self-Propelled 9.0/10	Greenworks 60V 21in Self-Propelled 8.6/10	21" Dual-Volt Self Propelled 9.0/10	Greenworks 21" Lawn Mower 9.6/10
Side discharge	✓Named	✓Named	Not named	✓Named	✓Named	✓Named
Self-propelled	✓Named	✓Named	✓Named	✓Named	✓Named	Not named
Steel deck	Not named	✓Named	✓Named	✓Named	✓Named	Not named
Height adjustment	✓Named	Not named	Not named	Not named	✓Named	Not named
Rear-wheel drive	Not named	Not named	✓Named	✓Named	Not named	Not named
Brushless motor	Not named	Not named	✓Named	✓Named	Not named	Not named
Cutting deck	✓Named	Not named	✓Named	Not named	Not named	Not named
Manual push	✓Named	✓Named	Not named	Not named	Not named	Not named
Criteria named	5 / 8	4 / 8	5 / 8	5 / 8	4 / 8	1 / 8

Built from the wording of this report, not from a bench test. A dash is not a fault: it only means the write-up does not mention that point for that model. Scores next to each model are out of 10, based on listed specifications and buyer feedback.

Greenworks Lawn Mowers Lineup at a Glance

The Models in Detail

Greenworks 48V

Best for: Quarter-acre flat suburban yards

Pros

• Four 4.0Ah batteries included
• Versatile 4-in-1 discharge system
• 8-position height adjustment

Cons

• Manual push drive operation
• Limited quarter-acre runtime

The Greenworks 48V combo kit utilizes two 24V batteries simultaneously to deliver 48 volts of operating power through an advanced brushless motor. By delivering double the torque and output of standard brushed configurations, this greenworks 48v 21 inch mower manages dense grass while maintaining quiet operation. The package includes four 4.0Ah high-capacity batteries and two dual-port chargers, providing a redundant battery rotation that eliminates downtime during maintenance cycles. A push-button ignition guarantees instant starts without pull cords or engine priming.

The cutting deck provides an exact 21-inch width and houses an 8-position single-point height adjustment lever spanning from 1.125 inches to 4.0 inches (up to 10.2 centimeters). It includes a 4-in-1 management system supporting mulching, bagging, side discharge, and leaf collection. With two fully charged 4.0Ah batteries delivering up to 45 minutes of runtime, the unit covers properties up to 0.25 acres. Additionally, the included batteries connect across more than 200 indoor and outdoor tools within the 24V POWERALL ecosystem.

This push mower is an efficient choice for homeowners with flat, quarter-acre residential parcels who already use or plan to expand into the brand’s extensive 24V power tool family. Because it lacks motorized wheel drive, it requires operator pushing, making it less practical for properties with hills or rough contours. When yard dimensions exceed a quarter acre or terrain slopes steeply, upgrading to a motorized self-propelled configuration is recommended.

Greenworks 60V 21in Push Lawn Mower

Best for: Large properties up to three-quarter acre

Pros

• Dual batteries with auto switchover
• Variable speed self-propelled drive
• Over 60 minutes continuous runtime

Cons

• Heavier 65-pound steel deck
• Requires storing two batteries

Best for: Flat half-acre residential properties

Pros

• IPX4 waterproof steel deck
• SmartCut self-sharpening dual blades
• Rapid 50-minute recharge time

Cons

• Manual push propulsion
• Single battery kit

Stepping into higher voltage performance, the Greenworks 60V 21in Push Lawn Mower runs on a 60V 5.0Ah lithium-ion battery engineered to replicate 150cc gas motor cutting power. Operating at a blade speed of 3200 RPM, it yields 50 percent more torque than legacy 40V tools to cut thick, overgrown grass without stalling. The durable steel deck measures 20.28 inches in cutting width and features an IPX4 waterproof rating, allowing safe operation through damp grass or sudden light rain showers. The rapid charger replenishes the 5.0Ah battery in 50 minutes.

Cutting efficiency is managed by SmartCut self-sharpening dual blades that automatically increase power output when encountering resistant turf patches. The 4-in-1 design accommodates mulching, bagging, side discharge, and a dedicated turbo leaf mode. Navigating this 59.5-pound mower is assisted by 10-inch rear wheels and 8-inch front wheels, alongside high-output LED headlights for early morning or evening yard work. For shoppers conducting an extensive greenworks lawn mower comparison, this model provides high-output cutting capability with straightforward manual push handling.

This unit suits homeowners managing flat half-acre parcels who want robust blade speed and commercial-style steel construction without the added mechanical weight of drive motors. Its single 5.0Ah battery yields up to 60 minutes of runtime under optimal conditions. However, on yards with significant grade variations or terraces, pushing a 59.5-pound steel deck by hand can cause fatigue, pointing sloped-yard owners toward self-propelled 60V alternatives.

Greenworks 80V 21in Self-Propelled Lawn Mower

Best for: Sloped yards requiring maximum cutting torque

Pros

• High-torque 80V brushless motor
• Variable speed rear-wheel drive
• Durable steel cutting deck

Cons

• Heavier 75-pound weight
• Single battery configuration

Operating at the apex consumer voltage tier, the Greenworks 80V 21in Self-Propelled Lawn Mower pairs high-voltage battery power with integrated rear-wheel propulsion. Its industrial-style brushless motor delivers 30 percent more torque than standard electric configurations, powering through dense weeds and damp leaves while operating three times quieter than gas equivalents. The heavy-duty 21-inch steel deck encompasses a 20.28-inch cutting width, combining long-term impact resistance with clean lawn coverage.

The variable-speed rear-wheel drive allows users to match travel speed precisely to their stride, providing traction across uneven turf and upward inclines. Powered by an included 80V 4.0Ah battery, this greenworks 80v 21in self-propelled lawn mower is rated to cut up to 0.5 acres per charge, depending on grass thickness and terrain. Ultra-bright LED headlights support early morning or twilight cutting, while 4-in-1 mowing options manage mulching, collection, and side dispersion. The battery also powers more than 75 commercial-grade tools, such as an 80v greenworks trimmer.

Weighing 75 pounds, this machine is specifically designed for homeowners with rolling half-acre properties who demand maximum cutting muscle to tackle stubborn weeds and steep grades. The motorized drive relieves physical pushing strain entirely on hills. However, for properties larger than half an acre, the single 4.0Ah battery may necessitate mid-session recharging pauses unless a spare battery is kept on hand.

Greenworks 60V 21in Self-Propelled Lawn Mower

Engineered for extended coverage on larger properties, the Greenworks 60V 21in Self-Propelled Lawn Mower comes equipped with two 4.0Ah batteries and an automatic switchover system. When the first battery depletes, the mower switches to the second pack automatically, providing over 60 minutes of uninterrupted runtime to cut up to 3/4 acre. Its 60V brushless motor drives the blade at 3200 RPM, offering gas-equivalent cutting capability while running 60 percent quieter than combustion engines.

The rugged steel deck provides a 20.28-inch cutting path and integrates variable-speed rear-wheel drive that lets operators fine-tune momentum across rough grades and dense thatch. The versatile 4-in-1 system handles mulching, bagging, side discharge, and turbo leaf pickup, backed by front LED headlights for low-light visibility. Widely regarded as a top candidate for the best greenworks 21 cordless mower for sprawling residential yards, this package ensures substantial cutting capacity without mid-mow delays.

This configuration is ideal for homeowners with 0.5 to 0.75-acre properties featuring uneven ground, slopes, and heavy autumn leaf accumulation. The self-propelled system minimizes physical exertion across expansive spaces. Conversely, those with compact quarter-acre lawns may find the 65-pound steel assembly and dual-battery system unnecessarily heavy for smaller storage footprints.

21″ Dual-Volt Self Propelled Lawn Mower

Best for: Frequent commercial landscape maintenance

Pros

• Four batteries included
• Self-propelled drive system
• Heavy-duty commercial steel deck

Cons

• No side discharge option
• Heavier 28-kilogram construction

Developed under the Greenworks Commercial label, the 21″ Dual-Volt Self Propelled Lawn Mower features an adaptable 48V/24V dual-voltage power configuration built for heavy operational demands. This greenworks 21 self propelled mower comes complete with four batteries and a rapid charging dock, enabling maintenance crews and property owners to rotate power packs continuously without work stoppages. Its automated drive system powers the rear wheels to handle demanding turf without manual pushing strain.

Constructed with a heavy-duty steel deck across a full 21-inch cutting width, this machine weighs 28 kilograms (approximately 61.7 pounds) and prioritizes structural longevity. The deck utilizes a specialized 2-in-1 cutting system optimized exclusively for mulching and rear discharge, omitting side discharge paths in favor of balanced chamber airflow. A 7-position single-point height adjustment lever tailors blade levels across diverse turf species. For landscape managers requiring a dedicated self propelled greenworks mower for recurring commercial maintenance, this unit delivers high structural endurance.

This commercial model suits property managers, institutional facilities, and contractors seeking a rugged steel deck with multiple bundled batteries for sustained mowing cycles. Its dedicated 2-in-1 format means it cannot disperse clippings through a side chute. Homeowners who prefer light consumer controls, turbo leaf collection modes, or side discharge options will find the prosumer 60V self-propelled models better suited to residential routines.

Greenworks 21″ Lawn Mower Side Discharge

Best for: Owners needing lateral clipping expulsion

Pros

• Durable impact-resistant plastic
• Tool-free fast setup
• Guides clippings away cleanly

Cons

• Accessory chute only
• Select 21-inch compatibility only

The Greenworks 21″ Lawn Mower Side Discharge chute is a genuine equipment accessory designed to direct grass clippings cleanly away from the cutting chamber on compatible decks. Built for select 21-inch mowers from the manufacturer, this molded chute channels high-velocity debris outward to prevent wet clippings from matting beneath the deck. Guiding clippings laterally preserves chamber airflow, prevents motor bogging in tall grass, and maintains an orderly lawn appearance.

Manufactured from high-density impact-resistant plastic, this chute withstands impacts from stones, twigs, and dense organic debris during heavy discharge mowing. The component provides tool-free installation, snapping directly into the spring-loaded discharge port on compatible mower decks within seconds. The product listing indicates universal fitment across select 21-inch electric and battery-powered mower decks from the brand.

This discharge attachment is intended for owners of compatible 21-inch decks who need to replace damaged hardware or restore lateral expulsion functionality on their machine. It is particularly valuable when cutting overgrown turf where bagging would require constant stops and mulching would overload the motor. Because this listing represents an attachment rather than a complete lawn mower, shoppers must verify that their existing deck features a compatible side port before purchase.

Matching a Model to Your Setup

• Flat suburban yards up to 0.25 acres: Select the Greenworks 48V for its lightweight push maneuverability, 45-minute runtime, and four included batteries that power over 200 compatible 24V tools.
• Dense half-acre flat lawns: Choose the Greenworks 60V 21in Push Lawn Mower for its 3200 RPM blade speed, IPX4 waterproof steel deck, and fast 50-minute recharge cycle.
• Hilly half-acre properties with heavy weeds: Pick the Greenworks 80V 21in Self-Propelled Lawn Mower to leverage maximum 80V brushless motor torque and variable-speed rear-wheel drive.
• Rolling yards up to 0.75 acres: Opt for the Greenworks 60V 21in Self-Propelled Lawn Mower to utilize dual 4.0Ah batteries with automatic switchover for over 60 minutes of uninterrupted mowing.
• Frequent commercial maintenance schedules: Deploy the 21″ Dual-Volt Self Propelled Lawn Mower for its commercial-grade steel deck, four included batteries, and dedicated 2-in-1 mulching and rear discharge design.
• Owners needing lateral clipping expulsion: Install the Greenworks 21″ Lawn Mower Side Discharge chute to replace missing or broken hardware on compatible 21-inch decks.

Before You Buy

When choosing among battery-powered mowers, note that battery packs cannot be interchanged across different voltage platforms. Batteries from the 24V POWERALL family will not operate 60V or 80V machines, nor can 80V batteries fit 60V tool housings. The product listings do not specify steel deck gauge thicknesses, nor do they detail maximum walking speeds in miles per hour for the self-propelled drive controls. Additionally, while mower decks are marketed under the 21-inch category, technical specifications list blade cutting paths at 20.28 inches on select 60V and 80V models, representing normal operational clearance inside the steel housing.

Included accessories and package contents also differ across the catalog. The Greenworks 48V push kit and the commercial Dual-Volt unit include four batteries each, whereas the 60V push model and 80V self-propelled model supply a single battery pack per box. Furthermore, the commercial Dual-Volt mower features a dedicated 2-in-1 deck lacking side discharge compatibility entirely, while consumer 60V and 80V options incorporate 4-in-1 multi-mode discharge decks. Shoppers ordering the replacement side discharge chute must confirm deck latch compatibility, as the listing indicates it fits select 21-inch decks rather than every historical model.

FAQ

Which greenworks lawn mower to buy for steep slopes?

For steep slopes, select a model equipped with rear-wheel self-propulsion. The Greenworks 80V 21in Self-Propelled Lawn Mower delivers maximum motor torque to climb inclines while cutting thick vegetation, while the Greenworks 60V 21in Self-Propelled Lawn Mower provides variable-speed pace control and dual-battery endurance for larger sloped lawns.

How does the 48V dual-battery platform work?

The Greenworks 48V mower utilizes two 24V lithium-ion batteries connected in series to produce 48 volts of total operating power. This configuration allows homeowners to share batteries across the manufacturer’s 24V POWERALL lineup of over 200 handheld tools and workshop equipment while achieving 48V performance on the mower.

Are the cutting widths identical across all 21-inch models?

While categorized within the 21-inch deck class, specific cutting paths vary slightly by model. The Greenworks 48V and commercial Dual-Volt mowers specify a 21-inch cutting width, whereas the 60V push, 60V self-propelled, and 80V self-propelled specifications list a 20.28-inch blade cutting path to provide necessary deck clearance and optimize airflow.

Does the side discharge chute fit all Greenworks mowers?

No, the Greenworks 21″ Lawn Mower Side Discharge chute is engineered exclusively for select 21-inch decks that feature an integrated side discharge port and spring hinge. Models configured strictly for 2-in-1 mulching and rear discharge, such as the commercial Dual-Volt model, do not support side discharge attachments.

What maintenance is required for a cordless battery mower?

Cordless battery mowers eliminate spark plug replacements, fuel stabilization, carburetor adjustments, and motor oil changes. Routine upkeep consists of cleaning grass clippings from beneath the steel deck after use, storing batteries indoors away from extreme temperatures, and inspecting or sharpening the cutting blade periodically.