40V Nitro Power Share 5.0Ah 20" Cordless Lawn Mower

40V Nitro Power Share 5.0Ah 20" Cordless Lawn Mower is rated 4.8 out of 5 by 24.
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5 Year Warranty
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  • Gas-like power—Worx Nitro outdoor tools are engineered to provide gas-like power, performance, and runtime.
  • 3-in-1 functionality—Mulch / Bag / Side-Discharge.
  • 40V lawn mower with high-capacity 5.0Ah Power Share PRO batteries.
  • Durable, 20 in. (50.8 cm) steel cutting-deck w/ Nutricut™ dual-stage mulching capabilities.
  • 7-position, single-lever cutting height adjustment.
  • Charge-level indicator provides a quick reference to the remaining runtime.
  • Fully collapsible handle for compact, stand-up storage.
  • Run longer with high-capacity batteries—Worx Power Share PRO intelligent batteries deliver extended run times, plus heat and impact protection. Compatible with all Worx 20V and 40V tools, outdoor power and lifestyle products.
  • Use Power Share PRO Batteries—Batteries and Charger sold separately. For optimal runtime and performance, use Power Share PRO Batteries: WA3012 (4.0Ah) and WA3571 (5.0Ah).
40V MAX (2x20V)
2x5.0Ah PRO
Deck Size
20 in. (50.8 cm)| Metal
Blade Cut Width
19 in. (48.26 cm)
Cutting Height
1.5 in. – 4.25 in. (3.81 - 10.79 cm) | 7-Position
Bag Capacity
1.4 Bushels (49.33 L)
Wheel Size
Front: 7 in. (17.78 cm)| Rear: 10 in. (25.4 cm)
Unit Weight
53.6 lbs. | 50.7 lbs. (bare) (24.31 | 22.99 kg)
(1) - Lawn Mower
(1) - Collection Bag
(1) - Mulch Plug
(1) - Side Discharge Chute
(2) - 5.0Ah Batteries
(1) - Charger

This lawn mower is not self-propelled, but is still agile and easy to work with.

The deck width is 20 in. (50.8 cm) and the cutting width is 19 in. (48.26 cm) to deliver great cutting efficiency.

Yes, this lawn mower has a sturdy, metal cutting deck.

You can adjust the cutting height of this Lawn Mower to give you exactly the cut you want. Switch between multiple different cutting height positions with an easy-to-use single-lever adjustment.

The collection bag fill level can be checked by lifting the flap covering the opening. With over 1 bushel of fill capacity, emptying is easy and convenient.

This lawn mower can be used with or without the collection bag. If you’d rather not collect your clippings, you can use the rear discharge or mulching feature to feed the trimmings back into your yard to nourish it naturally.

Yes, this lawn mower has a side discharge outlet. With the lawn mower off and batteries removed, you can easily attach the direcitonal outlet to the side of the lawn mower with no tools required. This mower also comes with Nutricut® for premium mulching capability.

While your lawn mower is powerful enough to handle wet grass, we don’t recommend mowing wet grass. Wet grass can inhibit cutting performance, form clumps that interfere with the mulching action and/or reduce runtime. For best performance, wait until the grass dries before cutting.

Since this lawn mower is designed for easy, compact storage when not in use, it’s shipped to you in a similar configuration to save you on shipping. There is some minor assembly required, but will take less than 5 minutes and will not require any tools.

Changing blades on this lawn mower is easy! You’ll need protective hand gloves and a spanner wrench to remove the blade. For detailed instructions and illustrations, review the owner’s manual.

Replacement lawn mowing blades can be found under Lawn Mower Accessories.

Storing the mower outside is not ideal and is not recommended. Worx lawn mowers fold into a compact shape to make storage in your garage or shed easy. For more information about folding down the mower for storage, review your owner’s manual.

Our lithium-ion (Li-Ion) tools and nickel-cadmium (Ni-Cad) tools are separate battery platforms and are not interchangeable. Li-Ion batteries offer our customers maintenance-free technology without the hassle of managing the memory effect inherent in Ni-Cad batteries.

The POWERSHARE PRO series of WORX high-capacity batteries are designed for optimal performance and come standard with the WORX NITRO product offering. These batteries utilize an intelligent battery management system that monitors each cell to enhance, power, performance, and runtime.

Innovative, thermoplastic material encases each cell to pull heat away and maximize the cell’s performance, resulting in longer runtime.
360° cell protection provides increased security against vibration, drops, and water intrusion. This full-wrap design limits the influence that a compromised cell can have over the rest of the battery pack.

No. The WORX POWERSHARE PRO batteries can be used on all existing WORX 20V MAX chargers (WA3742, WA3881, WA3764, WA3770, WA3884, WA3835).

No.  The batteries require the same amount of charge-time as the standard WORX POWERSHARE batteries.  However, due to the Cell-Cooling Technology in the POWERSHARE PRO batteries, they stay cooler, longer.  As a result, less wait-time is needed before a battery can start charging, due to high temperature.

California Proposition 65 Warning 

Warning: This product can expose you to chemicals including lead and Di(2-ethylhexyl)phthalate (DEHP) which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.

ADVERTENCIA: Este producto puede exponerle a químicos incluyendo lead and Di(2-ethylhexyl)phthalate (DEHP), que son conocidos por el Estado de California como causantes de cáncer y defectos de nacimiento u otros daños reproductivos. Para mayor información, visite www.P65Warnings.ca.gov.

AVERTISSEMENT: Ce produit peut vous exposer à des agents chimiques, y compris lead and Di(2-ethylhexyl)phthalate (DEHP), identifiés par l'État de Californie comme pouvant causer le cancer et des malformations congénitales ou autres effets nocifs sur la reproduction.  Pour de plus amples informations, prière de consulter www.P65Warnings.ca.gov.

orange, black and white logo for Worx NITRO toolsorange, black and white logo for Worx NITRO tools

The Power to Outperform

The power and advanced technology to expertly handle any level project with Worx NITRO cordless tools and accessories. Do more, finish faster and deliver real results with every charge.

Worx Nitro™ 40V 20" Cordless Push Lawn Mower

The Power to Outperform Gas Mowers

3-in-1 Functionality

Quickly switch between modes: mulch when you want to return nutrients to the soil, bag when you want a cleaner-looking lawn, or use the side-discharge feature when you want a little of both.

Power Share™ PRO Batteries

For gas-like power, performance, and runtime, this push lawn mower runs on high-capacity 5.0Ah batteries. And it runs quieter, cleaner, and less-expensively than a gas mower.

Durable 20" Steel Deck

The innovative Nutricut dual-edge mulching blade of this 20 in. push mower provides superior lawn fertilization. And the premium steel deck is perfect for lawns with tough terrain.

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Advanced Enginnering

Efficiency and advanced engineering powered by cutting-edge research and innovation produces professional grade cordless tools.

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Enhanced Power

Increased RPMs, max torque, & cutting/drilling capacity beyond your typical cordless tools.

power share 20v pro batterypower share 20v pro battery

Compatible with Power Share™ Pro

Power Share™ PRO is a next level Lithium-Ion battery that offers upgrades like greater amp hours for extended run times, heat and impact protection, and longer lifespan so you can do more on every charge.

orange, black and white logo for Worx NITRO toolsorange, black and white logo for Worx NITRO tools

The Power to Outperform

The power and technology to do more, finish faster and deliver real results with every charge.