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Ryobi
Ryobi 40V HP Brushless 21 in. Self-Propelled Cordless Lawn Mower

Ryobi 40V HP Brushless 21 in. Self-Propelled Cordless Lawn Mower

4.5(2,172 ratings)

Best price now

$599.99at directtoolsoutlet.comChecked 40 min ago

Compared across 4 stores. Prices are checked against each store and labelled with when.

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Price facts

  • Lowest price today: $599.99 at directtoolsoutlet.com (checked Nov 11, 2026).
  • Checked at 4 stores.

Our take on the Ryobi 40V HP Brushless 21 in. Self-Propelled Cordless Lawn Mower

The Ryobi 40V HP Brushless 21" Self-Propelled Mower is a battery-powered walk-behind mower with a 20-inch cutting deck, rear-wheel drive, and variable speed self-propulsion. It comes with two 40V 6Ah batteries that provide up to 80 minutes of runtime, enough for about 3/4 acre. The brushless motor and smart electronics adjust blade speed to power through thick grass, and the Cut Command Center lets you monitor runtime and adjust settings. Owners praise its quiet operation and lack of gas hassle, but some note it is heavy and the batteries take time to recharge.

Best forHomeowners with up to 3/4 acre of lawnThose wanting to replace a gas mower without gas smell or pull cordsPeople who value quiet operation and low maintenanceUsers already invested in the Ryobi 40V battery system
Pros
  • Two 6Ah batteries included for extended runtime
  • Self-propelled rear-wheel drive with variable speed and cruise control
  • Brushless motor with turbo mode for tough grass
  • 7-position cutting height adjustment from 1.5 to 4 inches
  • 3-in-1 capability: bagging, mulching, and side discharge
  • Folds and stores vertically to save space
Cons
  • Heavy and bulky to maneuver in tight spots
  • Batteries take a couple of hours to recharge
  • Runtime may be shorter in tall or wet grass
  • Plastic deck may feel less durable than steel

Ryobi 40V HP Brushless 21 in. Self-Propelled Cordless Lawn Mower prices at every store

  • Home DepotNew

    In stock

    $639.00Free shippingChecked 40 min ago
    Visit Home Depot
  • Ryobi ToolsNew

    In stock

    $639.00Checked 40 min ago
    Visit Ryobi Tools
  • directtoolsoutlet.comNew

    Availability unknown

    $599.99+ $14.99 shippingChecked 40 min ago
    Visit directtoolsoutlet.com
  • eBayNew

    Availability unknownSold by kaazim.enterprise

    $899.99Checked 40 min ago
    Visit eBay

Store links may earn us a commission.

Ryobi 40V HP Brushless 21 in. Self-Propelled Cordless Lawn Mower price history

Lowest price we've seen: $599.99 on Nov 11 at directtoolsoutlet.com. Tracked across 4 stores since Nov 11.

What reviewers say

  • 4.5 / 52,172 ratings

Reviewers give the Ryobi 40V HP mower high marks for its power and convenience, often comparing it favorably to gas mowers. Many appreciate the quiet operation and lack of maintenance, though some find it heavy and note that runtime can be limited in demanding conditions.

What people mention
  • NoisePraisedOwners say it is much quieter than a gas mower, making early morning mowing less bothersome.
  • WeightCriticisedSome find the mower heavy and difficult to maneuver, especially in tight areas.
  • Battery lifeMixedWhile the included batteries handle typical lawns, runtime can fall short in tall or wet grass.
  • Self-propulsionPraisedThe rear-wheel drive and variable speed are often highlighted as making mowing effortless.
  • Build qualityMixedThe plastic deck is lightweight and rust-proof, but some users question its long-term durability.

About the Ryobi 40V HP Brushless 21 in. Self-Propelled Cordless Lawn Mower

This is a 40V cordless walk-behind lawn mower with a brushless motor and rotary cutting. The motor and electronics respond to mowing conditions by raising blade speed so the mower doesn't bog down in thick grass. A turbo mode adds extra power for tough grass.

The mower is self-propelled with rear wheel drive. It has variable speed and cruise control. The Cut Command Center lets the user monitor runtime and blade life, turn on turbo mode and lights, and adjust self-propelled speed. The mower starts with a push button and a start key.

The 21-inch composite deck is lightweight and resists corrosion. It can bag, mulch or discharge clippings to the side. The handles fold so the mower can be stored upright. It belongs to the Ryobi 40V system, where any 40V battery works with any 40V product.

Power
40V battery, brushless motor
Battery
40V, 6 Ah
Drive
Self-propelled, rear wheel drive, variable speed, cruise control
Deck
21 in. polymer composite
Cutting heights
7 positions, 1.5 in. to 4 in.
Cutting modes
Bagging, mulching, side discharge
Start
Push button with start key
Storage
Handles fold for vertical storage
Warranty
5-year tool, 3-year battery, lifetime deck

Specifications

Mower Type
Walk Behind
Power Source
Battery
Start Type
Push Button Start
Cutting Width
20"
Bagging
Yes
Cutting Height Options
7-position
Maximum Cutting Height
4"

Questions and answers

How long does the battery last on a full charge?
With the two included 6Ah batteries, you can get up to 80 minutes of runtime, depending on grass conditions and use of self-propel and turbo mode.
Does it come with batteries and a charger?
Yes, the kit includes two 40V 6Ah batteries and a rapid charger.
Can I use other Ryobi 40V batteries with this mower?
Yes, any Ryobi 40V battery works with this mower, though runtime will vary with capacity.
What is the cutting width and height range?
It has a 20-inch cutting deck and a 7-position height adjustment from 1.5 to 4 inches.
Is it easy to store?
Yes, the handles fold and the mower can be stored vertically to save space.
Does it mulch and bag?
Yes, it offers mulching, bagging, and side discharge options.
Where is the Ryobi 40V HP Brushless 21 in. Self-Propelled Cordless Lawn Mower cheapest?
At directtoolsoutlet.com, for $599.99, as of our latest check.
What do buyers say about the Ryobi 40V HP Brushless 21 in. Self-Propelled Cordless Lawn Mower?
Rated 4.5 out of 5 from 2,172 ratings.
Where can I buy the Ryobi 40V HP Brushless 21 in. Self-Propelled Cordless Lawn Mower?
4 stores we checked sell it, including directtoolsoutlet.com, Home Depot, Ryobi Tools, eBay.

Stores we've priced the Ryobi 40V HP Brushless 21 in. Self-Propelled Cordless Lawn Mower at

  • Home Depot deals and prices

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Minimum Cutting Height
1.5"
Mulching
Yes
Cutting Method
Rotary
Side Discharge
Yes
Drive Type
Self-Propelled Rear Wheel Drive
Self Propelled
Yes
Variable Speed
Yes
Cruise Control
Yes
Transmission Type
Rear wheel drive
Battery Included
Yes
Battery Amp Hour
6 Ah
Battery Voltage
40V
Number Of Batteries Included
1
Deck Material
Polymer Composite
Deck Size
20"
Engine Type
Brushless
Coverage Area
1/2 Acre
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