WORX Nitro 40V 21″ Push Lawn Mower Review 2025

A well-maintained lawn adds curb appeal and makes outdoor spaces more enjoyable. The WORX Nitro 40V 21″ Push Lawn Mower is designed for homeowners who want a reliable, battery-powered mower that balances power, efficiency, and convenience. With Aerodeck Technology for improved airflow, IntelliCut Technology for automatic power adjustments, and a brushless motor that extends runtime, this mower is built to handle up to ½ acre of lawn. It also features three-in-one functionality, allowing users to mulch, bag, or use side discharge for grass clippings.

This mower runs on two 20V 5.0Ah PowerShare Pro batteries, which are compatible with over 140 WORX tools. It also offers a 7-position height adjustment for a customizable cut. With its collapsible handle for compact storage, this mower is a practical choice for those who need efficiency without sacrificing power.

Why You Should Consider the WORX Nitro 40V 21″ Push Lawn Mower

Battery-powered lawn mowers have advanced significantly, and the WORX Nitro 40V 21″ Push Lawn Mower is proof of that. Its brushless motor 2.0 delivers 40% more power than older models while extending the runtime by 10%. The IntelliCut Technology ensures the mower only uses extra power when needed, preventing unnecessary battery drain.

With its 21-inch cutting width, this mower covers more ground in fewer passes, reducing the time spent mowing. The Aerodeck Technology enhances airflow, preventing clogs and improving bag collection efficiency. Plus, the 3-in-1 design allows you to choose between mulching, bagging, or using side discharge, offering flexibility based on your lawn’s needs.

The 7-position height adjustment lets users set the blade height anywhere between 1.5 inches to 4 inches, making it adaptable for different grass types and seasonal changes. If you need a mower that delivers power, efficiency, and convenience, this model is worth considering.

Features and Benefits

Quality of the Product

Last update on 2025-06-20 / Affiliate links / Images from Amazon Product Advertising API

The WORX Nitro 40V mower is built with durable polypropylene, making it lightweight yet sturdy. The brushless motor 2.0 enhances longevity by reducing wear and tear compared to traditional motors. Its foldable handle makes it easy to store in compact spaces, and the quick-adjust lever ensures smooth height changes.

Battery Efficiency

This mower runs on two 20V 5.0Ah PowerShare Pro batteries, providing 40V total power. These batteries work with over 140 WORX tools, offering a cost-effective way to expand your toolset. The included 4A dual charger ensures fast recharging, so you can get back to mowing quickly.

IntelliCut Technology

The IntelliCut Technology adjusts the mower’s power output based on grass thickness. It increases power when cutting through dense grass and reduces it for lighter areas, extending battery life and ensuring consistent performance.

Aerodeck Technology

The Aerodeck Technology enhances airflow within the cutting deck, reducing clumping and improving bagging efficiency. This feature ensures a clean, even cut and minimizes clogging, reducing the need for frequent stops to empty the bag.

What Is It Used For?

The WORX Nitro 40V 21″ Push Lawn Mower is designed for maintaining lawns efficiently while offering the flexibility of three different cutting methods.

Home Lawn Maintenance

This mower is ideal for yards up to ½ acre, providing enough battery power to complete most mowing tasks in one charge. Its 7-position height adjustment lets you customize the cut based on your grass type and season.

Mulching Capabilities

With the included mulch plug, this mower finely chops grass clippings and distributes them back onto the lawn. This process helps return nutrients to the soil, promoting healthier grass growth.

Bagging Grass Clippings

For those who prefer a clean lawn without clippings, the collection bag efficiently gathers grass for easy disposal. The Aerodeck Technology improves airflow, preventing clogging and maximizing bagging efficiency.

Side Discharge Option

If you prefer to avoid bagging or mulching, the rear side-discharge chute allows grass clippings to be expelled to the side, making it easier to mow large areas quickly.

Product Specifications

Feature	Specification
Brand	WORX
Power Source	Battery Powered
Material	Polypropylene
Color	Black and Orange
Style	21″ 40V Mower w/(2) 5.0Ah Batteries
Item Weight	55.6 Pounds
Cutting Width	20 Inches
Number of Positions	7
Operation Mode	Manual
Product Dimensions	60″D x 22″W x 40.9″H

Who Is the WORX Nitro 40V 21″ Push Lawn Mower Best For?

Reasons to Buy

• Cordless convenience – No need to deal with gas, oil, or tangled cords.
• Efficient cutting power – The IntelliCut Technology automatically adjusts power levels for different grass thicknesses.
• 3-in-1 versatility – Offers mulching, bagging, and side discharge options.
• Compact storage – The collapsible handle allows for vertical storage, saving space in garages or sheds.

Concerns

• Not self-propelled – Requires manual pushing, which may be challenging for some users.
• Battery runtime – While sufficient for most yards, larger lawns may require battery swaps or recharges.

Frequently Asked Questions

How long does the battery last on a full charge?

The two 20V 5.0Ah batteries provide enough runtime to cover up to ½ acre, depending on grass conditions and cutting height settings.

Can I use other WORX PowerShare batteries with this mower?

Yes, any WORX PowerShare battery is compatible, but higher capacity batteries (like 5.0Ah) offer better performance and longer runtime.

Does it work well on thick grass?

Yes, the IntelliCut Technology increases power automatically when cutting through thick or dense grass, ensuring a smooth and even cut.

Is assembly required?

Minimal assembly is needed—attaching the handle and battery pack is straightforward and takes just a few minutes.

Wrapping Things Up

The WORX Nitro 40V 21″ Push Lawn Mower is a powerful and convenient option for homeowners who want a cordless, battery-powered solution. With IntelliCut Technology, Aerodeck airflow improvements, and three cutting modes, this mower provides a well-rounded mowing experience. Its collapsible handle for vertical storage, 7-position height adjustment, and efficient brushless motor make it a reliable choice for those maintaining yards up to ½ acre.

If you’re looking for a low-maintenance, eco-friendly alternative to gas-powered mowers, this model is worth considering.

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Last update on 2025-05-22 / Affiliate links / Images from Amazon Product Advertising API