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Internet # 317061059

Model # RY401170

Store SKU # 1006431841

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40V HP Brushless 20 in. Cordless Battery Walk Behind Push Lawn Mower with 6.0 Ah Battery and Charger

$329.00
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  • 40V HP Technology Delivers More Power Than a 150cc Gas Lawn Mower
  • Ideal for Mowing 1/2 Acre With up to 45 Min. Runtime
  • Over 85 RYOBI 40V Products – All Work With Any RYOBI 40V Battery
  • View More Details

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Product Details

About This Product

The RYOBI 40V HP Brushless 20" Push Mower delivers more power than a 150cc gas mower, making it a true gas replacement. The included 40V 6Ah lithium battery provides up to 45 minutes of runtime, making it ideal for up to 1/2 acre. 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. This mower is equipped with a single-point height adjustment allowing you to easily select the perfect height for your lawn. When you've finished mowing, simply fold the handles and store vertically for compact storage in tight spaces. Best of all, it is part of the RYOBI 40V system where any 40V battery works with any 40V product. This mower is backed by the RYOBI 5-Year Manufacturer's Tool Warranty, 3-Year Manufacturer's Battery Warranty, and includes RY401017 40V HP Brushless 20 in. Push Mower, OP40605 40V 6Ah Lithium Battery, OP408 40V Fast Charger, Grass Catcher Bag, Start Key, Mulch Plug, Side Discharge Chute, and Operator's Manuals.

Highlights

  • 40V HP technology delivers more power than a 150cc gas mower, making it a true gas replacement
  • Ideal for up to 1/2 acre with up to 45 minutes of runtime using included 40V 6Ah battery
  • 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
  • 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 (1.5 in.- 4 in.)
  • The pass through bag removal allows you to quickly empty the grass bag without spilling grass clippings
  • Folding handles easily collapse for compact, vertical storage even in tight places
  • Included 40V Fast Charger delivers 2X faster charging
  • Compatible with AC04029 20 in. Replacement Blade, AC20GB01 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
  • 5-year manufacturer's tool warranty; 3-year manufacturer's battery warranty
  • Includes: RY401017 40V HP Brushless 20 in. Push Mower, OP40605 40V 6Ah Lithium Battery, OP408 40V Fast Charger, Grass Catcher Bag, Start Key, Mulch Plug, Side Discharge Chute, and Operator's Manuals
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Product Information

Internet # 317061059

Model # RY401170

Store SKU # 1006431841

Specifications

Dimensions

Cutting Width (in.)

20 inches

Mower Deck Width (in.)

20 in

Details

Battery Amp Hours

6 Ah

Battery Run Time (min.)

45

Battery Voltage (V)

40V

Battery/Charger

(1) 6 Ah Battery & Charger Included

Charge Time (hours)

1.5

Charger Included

Charger Included

Cutting Height Options

7-position

Cutting Options

Bag, Mulch, Side-Discharge

Deck Material

Polymer Composite

Engine Make

OEM Branded Engine

Features

Adjustable Cutting Height, Bagger, Brushless Motor, Collapsible, Foldable handle, High Wheel, Mulching Lawn Mower, No Oil Change Required, Residential, Single-lever height adjustment

Included

Bagger, Battery(s), Charger, Wheels

Lawn Mower Type

Push Mower

Maximum Cutting Height (in.)

4 in

Minimum Cutting Height (in.)

1.5 in

Mower Size Type

Standard

Number of Blades

1

Number of Total Batteries Included

1

Outdoor Power Combo

Single

Power Type

Battery

Recommended Terrain

Flat, Sloped

Returnable

90-Day

Size of Yard

1/4 - 1/2 Acre

Start Type

Push Button Start

Tools Included

Battery, Charger

Walk Behind Mower Type

Manual Push

Warranty / Certifications

Manufacturer Warranty

5-Year Limited Tool Warranty, 3-Year Limited Battery Warranty

Questions & Answers

How long is charge time after every use
ByOct 13, 2026
1 Answer | 
Answer This Question

Hello, Newtolandscaping - The included OP408 charger can fully charge a 40V 6Ah battery in 90 minutes. 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 20 in. Cordless Battery Walk Behind Push Lawn Mower with 6.0 Ah Battery and Charger (RY401170).

By|Oct 15, 2026


    Will this mower accept 2 batteries at the same time?
    ByOct 7, 2026
    1 Answer | 
    Answer This Question

    Hello, Gjhogan - No, this mower uses one battery at a time. It has a single battery port for operation and a separate storage compartment to hold an extra battery. A battery in the storage compartment cannot power the unit; you must move it to the battery port to use 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 20 in. Cordless Battery Walk Behind Push Lawn Mower with 6.0 Ah Battery and Charger (RY401170).

    By|Oct 12, 2026


      is the battery compatible with other ryobi products
      ByOct 4, 2026
      1 Answer | 
      Answer This Question

      Hello, Raymond - Yes, these batteries are compatible with other RYOBI 40V tools. 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 20 in. Cordless Battery Walk Behind Push Lawn Mower with 6.0 Ah Battery and Charger (RY401170).

      By|Oct 7, 2026


        I am trying to replace the metal frame for the grass bag on model 401017, but I can’t seem to find anywhere online that lists a frame with that model number. Can you give me a link to where I can find it?
        ByAug 31, 2026
        1 Answer | 
        Answer This Question

        Hello, Bubw - Available replacement parts can be ordered at https://ryobipower.ordertree.com/. 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 20 in. Cordless Battery Walk Behind Push Lawn Mower with 6.0 Ah Battery and Charger (RY401170).

        By|Oct 4, 2026


          Can be the adjustable to a certain height?
          ByAug 29, 2026
          1 Answer | 
          Answer This Question

          Hello, Whel - Yes. The RY401170’s cutting height is adjustable using the height adjustment lever, with a range from 1-1/2 in. to 4 in. 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 20 in. Cordless Battery Walk Behind Push Lawn Mower with 6.0 Ah Battery and Charger (RY401170).

          By|Sep 1, 2026


            I am attempting to replace the mower blade on my 40V Brushless 20” Push mower and the bolt isn’t budging at all. I’ve tried just about everything from starting with the how to video on how to replace the blade to lubricants. It still works. Suggestions?
            ByAug 25, 2026
            1 Answer | 
            Answer This Question

            Hello, Gus14 - Thank you for the question. If you would, please 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 20 in. Cordless Battery Walk Behind Push Lawn Mower with 6.0 Ah Battery and Charger (RY401170).

            By|Sep 4, 2026


              Battery warranty how to use
              ByAug 21, 2026
              1 Answer | 
              Answer This Question

              Hello, Kjwright - Thank you for the question. If you would, please 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 20 in. Cordless Battery Walk Behind Push Lawn Mower with 6.0 Ah Battery and Charger (RY401170).

              By|Aug 25, 2026


                Was wondering if I can put dual blades on my lawn mower model RY401170 instead of blade that comes with it
                ByAug 20, 2026
                1 Answer | 
                Answer This Question

                Hello, Monkey54321 - We recommend using only the authorized, identical replacement blade on that mower. Installing a dual-blade setup in place of the original blade is not recommended. 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 20 in. Cordless Battery Walk Behind Push Lawn Mower with 6.0 Ah Battery and Charger (RY401170).

                By|Oct 4, 2026


                  Viewing 1-8 of 725

                  Customer Reviews

                  4.5 out of 5

                  • 4.5 out of 7,682 reviews
                  • 89% recommend this product
                  Filter by:
                  Showing 1-10 of 7,682 reviews
                  Excellent mower
                  Lasts long, charges quick, easy to clean. Mower, trimmer, leaf blower, next snow blower. Awesome tools, tough!
                  by
                  • Verified Purchase
                  • Recommended
                  Avoid at all cost.
                  Lasted less than a season. Won't run even after a new battery and checking all common issues such as key and safety. Please don't waist your money and be weary of 5 star reviews from folks who have used it twice.
                  by
                  Response from RYOBIOct 7, 2026
                  Hello, Smith - We are disappointed to find out that your lawnmower has stopped working. If you would, please reach out to us via our Contact Us page at https://www.ryobitools.com/support/contact. RYOBIOutdoorTools
                    1 found this review helpful
                    Huge design problem
                    I purchased this lawn mower in 2024. It couldn't start last week. After inspection, it was found that a mice or squirrels had entered the interior of the machine and bitten off the control board and wires. The real reason is that the lawn mower has a huge hole for them to enter. This position may have been originally reserved for the self-propelled lawn mower drive motor, but now without the motor installed, there will be a huge channel and cause problems. I checked several other power tools and none of them had similar issues. The sealing was done very well. This is a huge design problem.
                    by
                      Battery wont charge.
                      Love my Lawn mower, second season into using and ive been haveing problems with battery. It wont charge and i have a half cut yard my edfer had a bad battery and i was sent another one. This is crazy that both batteries have stopped working properly.
                      by
                        • Recommended
                        Best Push Lawn Mower Ever!
                        I absolutely love this lawn mower. It is lightweight, quiet, simple to use, and cuts the grass easily. I bought this mower in the spring after my gas lawn mower died. Some of the grass had grown to between 6"-8" in places and the new mower cut the long grass easily. You can hear the motor rev a little higher when cutting the long grass then it quiets afterwards. I love how lightweight it is. I'm a female senior citizen and this lawnmower is easy to operate and easy to handle. You pop in the battery, push the start button and off you mow! It also folds for easy storage and I can pop it it up on a storage shelf in my garage. I couldn't be happier with my purchase. I'm so glad that I no longer have to deal with with gas, oil, spark plugs, a pull cord start etc all the hassles of using a gas lawn mower. An electric mower with a rechargeable battery pack is the way to go!. The Ryobi rechargeable battery has a 3-year warranty and I can mow my front and back lawns on 1/4 charge. Happy sailing for at least the next 3 years! I bought this mower on sale so it was a very good deal. Perhaps I might consider a self-propelling Ryobi mower in the distant future.
                        by
                          • Recommended
                          Great
                          A game-changer compared to gas mowers. Convenient, eco-friendly, and powerful enough for my entire lawn.
                          by
                          • Verified Purchase
                          • Recommended
                          Significantly Reduced Family Lawn-Care Arguments
                          Our son is responsible for mowing the lawn, and our previous 17" corded electric mower required three daisy-chained extension cords. I was sure he would eventually run over a cord. He never did, but the next source of tension was the trail of grass clippings leading to the garage and the tangled mess of cords in the garage. I'd had enough. I skipped the usual family discussion, did some research, and came home with this Ryobi 40V 20" push mower. There were a few tense moments after it arrived, but after one mowing session, my husband, my son, and I were all in complete agreement that this was an outstanding upgrade. Performance: This cordless mower cuts the mowing time in half. That is partially due to not having to contend with the cord while mowing, but there is minimal setup. The push-button start means he's off and mowing within seconds. Also, it is surprisingly easier to maneuver than our smaller and lighter electric mower. Afterwards, the battery typically shows 3 of 4 bars remaining on the 40V battery included, so our son could probably do a couple of neighbours' yards too! Unlikely, but theoretically possible. Best Feature: Vertical storage. It takes up very little space in this position, and it is light enough for most people to lift. While storing it vertically isn't required, I kind-of told my son that it was. To store it that way, the grass bag has to be removed and emptied, and once the mower is upright, it's easy to remove any clumps of wet grass from underneath the deck. Vertical positioning improves cleanup and reduces maintenance issues. Thanks, Ryobi. This mower put an end to the extension cord tangles, grass-clipping messes, and lawn-mowing arguments in our household.
                          by
                            • Recommended
                            Long life Battery
                            Our old lawnmower died, we picked up our first cordless electric, love this one, lite and easy to manoeuvre. Battery has lasted us for three cuts. Highly recommend this model.
                            by
                            • Verified Purchase
                            • Recommended
                            long betterylife
                            easy setup and running time is longer than I thought. charging time is about 1h. running time 35min on 1500 sqft lawn. 3/4 bettery left.
                            by
                              • Recommended
                              Retaining washer failed on first use
                              The washer that retains the pin attaching the handle to the mower broke in half on first use.
                              by
                              Response from RyobiMay 22, 2026
                              Hello, Dcp1 - We are sorry to hear this! Would you please reach out to us via our Contact Us page at https://www.ryobitools.com/support/contact?
                                Showing 1-10 of 7,682 reviews

                                Compare Key Features

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                                Product Snapshot

                                Great for homeowners looking for a powerful cordless mower, making yard work easier and more efficient.
                                Ideal for homeowners wanting gas-like power, 50-minute runtime, and easy lawn striping.
                                Great for homeowners looking for a powerful cordless mower, making yard work easier and more efficient.
                                Ideal for customers who want gas-like power and up to 55 minutes runtime, ensuring effortless lawn care.

                                Cutting Width

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

                                Battery Runtime

                                45 minutes
                                50 minutes
                                Up to 55 minutes
                                Up to 55 minutes

                                Battery Voltage

                                40V
                                40V
                                40V
                                40V

                                Adjustable Cutting Height

                                Power Source Cordless