WORX Nitro 40V 21in Cordless Lawn Mower - Brushless Power for Small

Our review of the WORX Nitro 40V 21in cordless lawn mower finds it best suited for homeowners with small yards up to about 1/2 acre who want a quieter, low-maintenance alternative to gas. The single biggest reason to consider this mower is its combination of brushless Motor 2.0 power and Aerodeck technology, which together produce a clean, consistent cut while reducing deck clogs and improving bag collection compared with earlier models. Batteries and a dual charger are included so it is ready to use out of the box.

Key Features

• Aerodeck Technology: Vented deck design increases air volume to reduce clogs and clumping and improve overall cut quality and bag collection.
• Brushless Motor 2.0: Delivers higher power and longer runtime than first-generation brushless motors for stronger, more reliable cutting.
• Intellicut Technology: Patented sensors automatically raise cutting speed for thick grass and lower it in light areas to conserve battery life.
• PowerShare Compatibility: Includes two 20V 5.0Ah batteries that work across the WORX PowerShare platform for flexible tool use.
• 3-in-1 Functionality: Mulch, bag, or side-discharge quickly with the included mulch plug and discharge chute for different lawn needs.
• Easy Storage and Adjustments: Fully collapsible handle and a single 7-position lever let users change height and store the mower vertically in small spaces.

Who It's For

This mower is ideal for owners of small to medium suburban lots up to roughly 1/2 acre who want the convenience of cordless operation without the noise and upkeep of gas engines. It suits users who value easy storage, simple height adjustment, and a tool battery ecosystem that can power multiple devices around the yard and workshop.

Those with very large properties, lawns with extremely tall, damp grass that require extended runtime, or users who need heavy commercial duty performance should consider a larger battery platform or a dedicated gas model instead, since runtime varies with grass conditions and two 5.0Ah batteries are optimized for lighter to moderate workloads.

Pros & Cons

Pros

• Strong, efficient cutting from the brushless Motor 2.0 and Aerodeck design for improved bag collection.
• Intellicut sensors help balance power and runtime across varying grass density.
• Includes two batteries and a dual 4A charger so it is ready to run after assembly.
• Lightweight, easy to maneuver and collapses for compact vertical storage.

Cons

• Battery life is mixed in user reports and can limit continuous mowing time on larger or heavy-thatch lawns.

Specifications

Cutting width	21in
Battery	(2) 20V 5.0Ah PowerShare Pro batteries included
Charger	4A dual charger included
Height adjustment	7-position lever, 1.5in - 4in
Motor	Brushless Motor 2.0 with Intellicut
Functions	Mulch, bag, rear side-discharge
Recommended yard size	Up to 1/2 acre

Our Verdict

The WORX Nitro 40V 21in is a well-rounded cordless push mower for small yards that delivers cleaner cuts and reduced deck clogs thanks to Aerodeck and a more powerful brushless motor. It is good value for homeowners who want cordless convenience, included batteries and charger, and interchangeable PowerShare batteries, but those needing longer uninterrupted runtime should be aware of battery limits.

Frequently Asked Questions

How long will the batteries run on a single charge?
Runtime varies with grass height and density; customers report runs around 45 minutes in moderate conditions but heavy grass will reduce that time.

Does it include a bag and mulch plug?
Yes, the mower includes a collection bag, a mulch plug, and a rear side-discharge chute so you can switch functions easily.

Is the handle easy to store?
Yes, the handle is fully collapsible for vertical, space-saving storage and quick transport.