#1 Home Improvement Retailer

Internet # 320066230

Model # RY401220

Product Images

Exclusive

40V HP Brushless 21" Whisper Series Cordless Walk-Behind Multi-Blade Push Lawn Mower - (2) 6.0 Ah Batteries & Charger

$749.00
Apply Now
Pay $699 after $50 OFF your total qualifying purchase upon opening a new card. 
Apply for a Home Depot Consumer Card
  • 40V HP Technology Delivers More Power Than a 170cc Gas Lawn Mower
  • Ideal for Mowing 3/4 Acre With up to 70 Min. Runtime
  • Over 85 RYOBI 40V Products – All Work With Any RYOBI 40V Battery
  • View More Details

Free & Easy Returns In Store or Online

Return this item within 90 days of purchase.

Read Return Policy

Ask about this product

Get an answer now with AI

Magic Apron Assistant is an AI virtual assistant. By proceeding, you consent to the recording and use of your information by The Home Depot (and authorized third parties). More information

Product Details

About This Product

The RYOBI 40V HP Brushless 21" Multi-Blade Push Mower delivers more power than a 170cc gas mower. The included (2) 40V 6Ah batteries provide up to 70 minutes of runtime ideal for 3/4 acre or less. Experience the industry's best 3-in-1 cutting performance with the CROSS CUT Multi-Blade System. This allows for less clumping when mulching, further & more even dispersal when side discharging, and when bagging the fine clippings fill from back to front to maximize space for less bag changes. The brushless motor and advanced electronics automatically react to mowing conditions by increasing the blade speed to eliminate bogging down and powering through the toughest cut. As part of our WHISPER SERIES, this mower is among our quietest range of products, engineered to be quieter than gas. It's equipped with a durable 21" deck that is lightweight, resists corrosion, and is covered by a limited lifetime warranty. When the job is done, the handles quickly and easily collapse for compact, vertical storage. Best of all, it is part of the 40V System - any 40V battery works with any 40V product. This 40V HP Brushless 21" Multi-Blade Push Mower is backed by the 5-year manufacturer's tool warranty, 3-year manufacturer's battery warranty, and includes the RY401022 40V HP Brushless 21" Multi-Blade Push Mower, (2) OP40605 40V 6Ah Lithium Batteries, OP406 40V Rapid Charger, Grass Catcher Bag, Start Key, Mulch Plug, Side Discharge Chute, and Operator's Manuals.

Highlights

  • 40V HP technology delivers more power than a 170cc gas mower, making it a true gas replacement
  • Ideal for up to ¾ acre with dual active battery ports and (2) included 40V 6Ah batteries for up to 70 minutes of runtime using both batteries. On-board fuel gauge displays remaining runtime
  • CROSS CUT Multi-Blade System allows for less clumping when mulching, further & more even dispersal when side discharging, and when bagging the fine clippings fill from back to front to maximize space for less bag changes
  • Brushless motor and advanced electronics automatically react to mowing conditions by increasing the blade speed to eliminate bogging down and powering through the toughest cut
  • This WHISPER SERIES mower is engineered to be than gas, and even quieter than other cordless mowers, allowing you to mow any time of day without disturbing others
  • Experience gas performance with just the push of a button. No gas, no maintenance, no hassle.
  • Single-point height adjustment allows you to quickly select the perfect height for your lawn with 7 different positions (1 in.- 4 in.)
  • The pass through bag removal allows you to quickly empty the grass bag without spilling grass clippings
  • The one-touch folding handles quickly and easily collapse for compact, vertical storage even in tight places
  • Each battery recharges in less than 60 minutes with included 40V Rapid Charger
  • An integrated mulch plug switches from bagging to mulching by simply pulling a lever
  • The 11" high wheel design allows you to turn more easily and provides better overall traction and maneuverability
  • 21" durable composite deck is lightweight, resists corrosion, and is covered by a limited lifetime warranty
  • High-intensity LED headlights allow you to mow at dawn or dusk
  • Compatible with AC04031 21" Multi-Blade System Replacements, AC21GB Replacement Grass Bag, AC04020FC Extra Capacity Grass Bag, ACMC02 Mower Cover, ACLS01 Lawn Striper
  • Part of the RYOBI 40V System - Any 40V Battery Works With Any 40V Product
  • Proudly made in the USA with 5-year manufacturer's tool warranty; 3-year manufacturer's battery warranty
  • Includes: RY401022 40V HP Brushless 21" Multi-Blade Push Mower, (2) OP40605 40V 6Ah Lithium Batteries, OP406 40V Rapid Charger, Grass Catcher Bag, Start Key, Mulch Plug, Side Discharge Chute, and Operator's Manuals
  • Click here for more information on Electronic Recycling Programs
  • Return Policy
  • California residents
     see Prop 65 WARNINGS

Product Information

Internet # 320066230

Model # RY401220

Specifications

Dimensions

Cutting Width (in.)

21 inches

Mower Deck Width (in.)

23 in

Details

Battery Amp Hours

6 Ah

Battery Run Time (min.)

70

Battery Voltage (V)

40V

Battery/Charger

(2) 6 Ah Batteries & Charger Included

Charge Time (hours)

1

Charger Included

Charger Included

Cutting Height Options

7-position

Cutting Options

Bag, Mulch, Side-Discharge

Deck Material

Polymer Composite

Engine Make

Ryobi Engine

Features

Adjustable Cutting Height, Adjustable Handlebar, Assembly Required, Bagger, Blade Brake, Brushless Motor, Collapsible, Foldable handle, Headlights, High Wheel, Mulching Lawn Mower, No Oil Change Required, Residential, Rust resistant deck, Single-lever height adjustment

Included

Bagger, Battery(s), Charger

Lawn Mower Type

Push Mower

Maximum Cutting Height (in.)

4 in

Minimum Cutting Height (in.)

1 in

Mower Size Type

Standard

Number of Blades

2

Number of Total Batteries Included

2

Outdoor Power Combo

Single

Power Type

Battery

Recommended Terrain

Flat, Sloped

Returnable

90-Day

Size of Yard

1/2 - 1 Acre

Start Type

Keyed Start, Push Button Start

Walk Behind Mower Type

Manual Push

Warranty / Certifications

Manufacturer Warranty

5 year limited tool warranty

Questions & Answers

What is the ground speed of this unit
ByApr 21, 2026
1 Answer | 
Answer This Question

Hello, Oakley - This is a push mower, not a self-propelled mower, so the speed will depend on how fast you are pushing it. If you need further support, then feel free to ask another question. You can also contact us by phone at 1.800.525.2579, Monday - Friday from 9am to 6pm (EST), or via email when you visit us at https://www.ryobitools.com/support/contact. This question is from RYOBI 40V HP Brushless 21" Whisper Series Cordless Walk-Behind Multi-Blade Push Lawn Mower - (2) 6.0 Ah Batteries & Charger (RY401220).

By|Apr 23, 2026


    how much does the 401220 weigh? how much does each battery weigh? what is the difference between 401220 & 401210? does a catcher bag come with the 401220 along with two batterys and charger? what is the difference between push and walk behind mower?
    ByMar 1, 2026
    1 Answer | 
    Answer This Question

    Hello, Charolyn - This lawnmower weighs 68 pounds. Each battery weighs about 4 pounds. The RY401210 is self-propelled, and this RY401220 is not. A grass catcher bag is included. "Push" means that a lawnmower is not self-propelled. "Walk-Behind" means that a lawnmower is not a riding mower. If you need further support, then feel free to ask another question. You can also contact us by phone at 1.800.525.2579, Monday - Friday from 9am to 5pm (EST), or via email when you visit us at https://www.ryobitools.com/support/contact. This question is from RYOBI 40V HP Brushless 21" Whisper Series Cordless Walk-Behind Multi-Blade Push Lawn Mower - (2) 6.0 Ah Batteries & Charger (RY401220).

    By|Mar 2, 2026


      Our yard has thick grass and is uneven due to tree roots. Will this model do a good job of cutting the grass.
      ByOct 2, 2025
      1 Answer | 
      Answer This Question

      Hello, Yardlover - This mower should be able to do a good job of cutting your lawn. If you need further support, then feel free to ask another question. You can also contact us by phone or text at 1.800.525.2579, Monday - Friday from 9 am to 5 pm (EST), or via email when you visit us at https://www.ryobitools.com/support/contact. This question is from RYOBI 40V HP Brushless 21" Whisper Series Cordless Walk-Behind Multi-Blade Push Lawn Mower - (2) 6.0 Ah Batteries & Charger (RY401220).

      By|Oct 2, 2025


        How torn on led lights of my law mower
        ByAug 20, 2025
        2 Answers | 
        Answer This Question

        Hello, Marco - The lights will operate continuously whenever the motor is running. If you need further support, then feel free to ask another question. You can also contact us by phone or text at 1.800.525.2579, Monday - Friday from 9 am to 5 pm (EST), or via email when you visit us at https://www.ryobitools.com/support/contact. This question is from RYOBI 40V HP Brushless 21" Whisper Series Cordless Walk-Behind Multi-Blade Push Lawn Mower - (2) 6.0 Ah Batteries & Charger (RY401220).

        By|Aug 20, 2025

          Translation, please?

          By|Mar 30, 2026


            Does it have the speed controll?
            ByAug 9, 2025
            1 Answer | 
            Answer This Question

            Hello, Mohammad - This is a push mower, not a self-propelled mower, so there is no speed control. If you need further support, then feel free to ask another question. You can also contact us by phone or text at 1.800.525.2579, Monday - Friday from 9 am to 5 pm (EST), or via email when you visit us at https://www.ryobitools.com/support/contact. This question is from RYOBI 40V HP Brushless 21" Whisper Series Cordless Walk-Behind Multi-Blade Push Lawn Mower - (2) 6.0 Ah Batteries & Charger (RY401220).

            By|Aug 11, 2025


              Does ryobi make a leaf mulching blade for this mower
              ByAug 8, 2025
              1 Answer | 
              Answer This Question

              Hello, Jddd - The included blades are suitable for mulching. If you need further support, then feel free to ask another question. You can also contact us by phone or text at 1.800.525.2579, Monday - Friday from 9 am to 5 pm (EST), or via email when you visit us at https://www.ryobitools.com/support/contact. This question is from RYOBI 40V HP Brushless 21" Whisper Series Cordless Walk-Behind Multi-Blade Push Lawn Mower - (2) 6.0 Ah Batteries & Charger (RY401220).

              By|Aug 11, 2025


                is this model self propelled?
                ByJul 13, 2025
                2 Answers | 
                Answer This Question

                Hello, Jose - No, this model is not self-propelled. If you need further support, then feel free to ask another question. You can also contact us by phone or text at 1.800.525.2579, Monday - Friday from 9 am to 5 pm (EST), or via email when you visit us at https://www.ryobitools.com/support/contact. This question is from RYOBI 40V HP Brushless 21" Whisper Series Cordless Walk-Behind Multi-Blade Push Lawn Mower - (2) 6.0 Ah Batteries & Charger (RY401220).

                By|Aug 11, 2025

                  (1)

                  It will only run 3 hours then the blade controller will fail, but its self propelled no problem till the battery run down but its just wont cut the grass

                  By|May 2, 2026


                    Does this mower have the turbo mode push button?
                    ByJul 7, 2025
                    2 Answers | 
                    Answer This Question

                    Hello, Craig - No, this model does not have a turbo mode button. The mower's brushless motor and advanced electronics automatically react to mowing conditions by increasing the blade speed to eliminate bogging down and power through the toughest cut. If you need further support, then feel free to ask another question. You can also contact us by phone or text at 1.800.525.2579, Monday - Friday from 9 am to 5 pm (EST), or via email when you visit us at https://www.ryobitools.com/support/contact. This question is from RYOBI 40V HP Brushless 21" Whisper Series Cordless Walk-Behind Multi-Blade Push Lawn Mower - (2) 6.0 Ah Batteries & Charger (RY401220).

                    By|Jul 7, 2025

                      If you press the start button it will give a turbo boost

                      By|Mar 29, 2026


                        Viewing 1-8 of 109

                        Customer Reviews

                        4.3 out of 5

                        • 4.3 out of 711 reviews
                        • 85% recommend this product
                        Filter by:
                        Showing 1-10 of 711 reviews
                        Good power and simple
                        I purchase the Ryobi whisper series 21 inch cross cut push mower. I liked this one over some of the newer models because it looked a bit simpler. Just a bail, start button any go. I did my small back yard and it bagged well enough. Much easier than my old Ariens 911 series self propel mower👍
                        by
                          1 found this review helpful
                          Excelente so far so good 👍
                          [This review was collected as part of a promotion.] I just purchased my 20" Brushless Push Lawn Mower. So far so good. It worked just right and very stealth and nice. Assembly was super easy. Thanks
                          by
                            The mower works great. The cut is sharp and clean, and the adjustments and functions are as expected. The 7.5 Ah battery lasts about 40 minutes compared to the advertised 50, and covered about 1/6 acre. Since there are several trees and planting beds to work around, this was not out of line. Also, the occasional automatic Blade Speed increases would also use more power. Fortunately I purchased a second (6Ah) battery which lasts long enough to just about finish the other half of our lot. This also allows the first battery to recharge to about 1/2+ so it is available if needed - like when the grass is heavier. Delivery to the house was nice except for the fact that there was damage (crack) to the battery cover-see photo. Fortunately it is pretty much cosmetic, and the wonderful Home Depot customer service Rep. gave me a charge card credit that more than covered the cost of a replacement part. She offered to replace the mower but I just wanted to start using it, so I took the money. Overall I would say this is a good mower if you like the exercise, and are committed to the Ryobi 40V System. This is our 4th 40V Tool.
                            by
                            • Verified Purchase
                            Amazing
                            [This review was collected as part of a promotion.] I bought this just today it was on sale! Amazing fast charger and great warranty!
                            by
                              • Recommended
                              Smooth cut
                              [This review was collected as part of a promotion.] I love this mower so easy and light to use. I have used it only twice so far but I am very pleased with it. I will be buying more yard accessories from ryobi for sure.
                              by
                                • Recommended
                                Damaged box & apart of handle inside was bent
                                Received item on Thursday April 26th. I'm 62 and needed help getting it out of the box. So we took it out of the torn box on Tuesday April 30th. First thing we did was to put the battery to charge then we took lawnmower out if box. long story short the handle on the right side towards the bottom is bent so it doesn't click in so we can't use it and the bottom flap where you put the bag in is all scratched up. So my lawn is getting taller and we don't have anyway of cutting it.over $500 & nothing
                                by
                                Response from RYOBIMay 1, 2024
                                Hello, Unhappy - We are very disappointed to find out that your lawnmower arrived damaged! To get assistance, please contact Home Depot's Customer Support by texting “Support” to 38698, 24 hours a day, 7 days a week, or by calling 1-800-430-3376, 7 days a week, 6 a.m. - 2 a.m. ET. We hope this helps! And if we can be of any assistance in the future, please let us know at Reviews@RYOBItools.com. RYOBIOutdoorTools
                                  3 found this review helpful
                                  Works great!
                                  [This review was collected as part of a promotion.] Love this lawn mower. It is so quiet but also works just as good as any gas powered without the stink!! Highly recommend. It folds up nicely for ease of putting away.
                                  by
                                    • Recommended
                                    Great mower! Especially if you have a hill
                                    [This review was collected as part of a promotion.] I'm thrilled with the self propelled feature of this mower! I've got a back injury and this feature helps me a lot! It's like it's walking me. Easy to handle, easy to control, and gets the job done fast! When you hit a thick patch of grass, weeds, or sod it speeds up the blade and cuts right through it. Ryobi out did themselves with this one!
                                    by
                                      • Recommended
                                      Great tool
                                      [This review was collected as part of a promotion.] We got this a couple days ago, I was using it and it’s easy to use, lighter then I thought
                                      by
                                        Best Lawnmower I’ve Owned
                                        [This review was collected as part of a promotion.] Having a self-propelling lawn mower has made it easier to cut the grass. Also, I love that it’s completely electric.
                                        by
                                          • Recommended
                                          Showing 1-10 of 711 reviews

                                          40V HP Brushless 21" Whisper Series Cordless Walk-Behind Multi-Blade Push Lawn Mower - (2) 6.0 Ah Batteries & Charger

                                          thumbnail
                                          Replace cross cut blades
                                          How to replace cross cut blades

                                          Compare Key Features

                                          current item

                                          Product Snapshot

                                          Great for homeowners looking for a powerful and quiet mowing experience, making yard work easier. This mower is designed for effortless use, with a brushless motor and a durable 21 in.
                                          Ideal for homeowners wanting gas power without the hassle, with multi-blade cutting and long runtime.
                                          Ideal for customers who want gas-like power, ensuring effortless mowing and blowing for up to 3/4 acre.
                                          Ideal for homeowners wanting gas-like power, 80-minute runtime, and quiet operation.

                                          Cutting Width

                                          21 in.
                                          20 in.
                                          21 in.
                                          20 in.

                                          Battery Runtime

                                          70 minutes
                                          Up to 80 minutes
                                          80 minutes
                                          Up to 80 minutes

                                          Battery Voltage

                                          40V
                                          40V
                                          40V
                                          40V

                                          Adjustable Cutting Height

                                          Power Source Cordless