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Internet # 315114456

Model # P1109BTL

Store SKU # 1005885493

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ONE+ HP 18V Brushless 16 in. Cordless Battery Walk Behind Push Lawn Mower (Tool Only)

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  • ONE+ HP Technology Delivers the Power to Tackle Medium Yards
  • Ideal for Mowing 1/3 Acre With up to 40 Min. Runtime
  • Over 300 ONE+ Products – All Work With Any RYOBI ONE+ 18V Battery
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Product Details

About This Product

The RYOBI 18V ONE+ HP Brushless 16" Push Mower delivers the power to tackle medium sized yards with ease. It's ideal for up to 1/3 acre and runs for up to 40 minutes using (2) 18V. ONE+ 4Ah batteries. 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. Experience exceptional performance with just the push of a button, without the hassle of gas or cords. For your utmost convenience, adjust the height of your cut with the 7-position single point height adjustment. With its easy lift bag removal and included mulch plug, switching between bagging and mulching is a breeze. When you are finished mowing, easily fold the handles and store vertically for compact storage. Best of all, it is part of the RYOBI 18V ONE+ system where any 18V ONE+ battery works with any 18V ONE+ product. This 18V ONE+ HP Brushless 16" Push Lawn Mower is backed by the RYOBI 3-Year Manufacturer's Warranty and includes the P1109 18V ONE+ HP Brushless 16" Lawn Mower, Grass Catcher Bag, Mulch Plug, Start Key, and Operator's Manual. Batteries & charger not included.

Highlights

  • ONE+ HP Technology delivers the power to tackle medium sized yards with ease
  • Ideal for up to 1/3 acre and up to 40 minutes of runtime using (2) 18V. ONE+ 4Ah batteries (batteries not included)
  • 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 exceptional performance with just the pull of a trigger, without the hassle of gas or cords
  • 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
  • Easily switch from bagging to mulching with an included mulch plug
  • Folding handles collapse for compact, vertical storage even in tight places
  • Durable composite deck is lightweight & resists corrosion
  • Compatible with AC18160 16" Replacement Blade, ACMC01 Mower Cover
  • Part of the RYOBI ONE+ system - Any 18V ONE+ battery works with any 18V ONE+ product
  • 3-year manufacturer's warranty
  • Includes: P1109 18V ONE+ HP Brushless 16" Mower, Grass Catcher Bag, Mulch Plug, Start Key, and Operator's Manual
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Product Information

Internet # 315114456

Model # P1109BTL

Store SKU # 1005885493

Specifications

Dimensions

Cutting Width (in.)

16 inches

Mower Deck Width (in.)

17 in

Details

Battery Amp Hours

No Battery

Battery Run Time (min.)

40

Battery Voltage (V)

18V

Battery/Charger

Tool Only

Charge Time (hours)

0

Charger Included

Charger Not Included

Cutting Height Options

7-position

Cutting Options

Bag, Mulch

Deck Material

ABS Plastic

Engine Make

Ryobi Engine

Features

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

Included

Bagger

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

0

Outdoor Power Combo

Single

Power Type

Battery

Recommended Terrain

Flat, Sloped

Returnable

90-Day

Size of Yard

1/4 Acre or Less

Start Type

Push Button Start

Walk Behind Mower Type

Manual Push

Warranty / Certifications

Manufacturer Warranty

3 Year Limited Warranty

Questions & Answers

Is it self propelled
ByOct 28, 2026
1 Answer | 
Answer This Question

Hello, Jeff - 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 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 ONE+ HP 18V Brushless 16 in. Cordless Battery Walk Behind Push Lawn Mower with (2) 4.0 Ah Batteries and (1) Charger (P1190).

By|Nov 1, 2026


    The flap underneath seems to want to lay toward the blade but I think it’s supposed to lay the opposite way? If I backup mower, it slips toward blades.
    ByOct 16, 2026
    1 Answer | 
    Answer This Question

    Hello, Wendy - We recommend only pulling the mower backward when absolutely necessary. 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 ONE+ HP 18V Brushless 16 in. Cordless Battery Walk Behind Push Lawn Mower with (2) 4.0 Ah Batteries and (1) Charger (P1190).

    By|Oct 23, 2026


      Can you use a 18v 12.0ah on this?
      ByOct 4, 2026
      1 Answer | 
      Answer This Question

      Hello, Khrjfj - Yes, the 18V 12 Ah battery will fit in the P1109. 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 ONE+ HP 18V Brushless 16 in. Cordless Battery Walk Behind Push Lawn Mower with (2) 4.0 Ah Batteries and (1) Charger (P1190).

      By|Oct 7, 2026


        Where can I get replacement for lost lower handle lock on 1109BTL 116in push mower?
        BySep 23, 2026
        1 Answer | 
        Answer This Question

        Hello, Sirge - 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 ONE+ HP 18V Brushless 16 in. Cordless Battery Walk Behind Push Lawn Mower (Tool Only) (P1109BTL).

        By|Sep 28, 2026


          Mower worked one time and hasn't since it with not start. Have fully charged batteries and even tried a new one still will not start. How do I get it started
          BySep 20, 2026
          1 Answer | 
          Answer This Question

          Hello, Midnightjoe - We recommend these checks to get your P1190 mower started again: - Verify that the start key is inserted. The mower requires the start key to be inserted before it can start. - Make sure the handle is fully in position and both upper and lower handle locks are locked; the lower handle should be seated in the grooves and the lock knobs tightened. - If it still will not start, a low or overheated battery can prevent starting. Charge the battery, try a different battery pack, or allow the battery pack to cool. - If these solutions do not solve the problem, please reach out to us. 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 ONE+ HP 18V Brushless 16 in. Cordless Battery Walk Behind Push Lawn Mower with (2) 4.0 Ah Batteries and (1) Charger (P1190).

          By|Sep 22, 2026


            Can an 18 v 1.5 battery work with this mower
            BySep 19, 2026
            1 Answer | 
            Answer This Question

            Hello, Nancy - The 18V 1.5Ah battery is compatible with this mower, but it will not provide enough power or runtime. We recommend using at least a 4Ah battery with this 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 6pm (EST), or via email when you visit us at https://www.ryobitools.com/support/contact. This question is from RYOBI ONE+ HP 18V Brushless 16 in. Cordless Battery Walk Behind Push Lawn Mower (Tool Only) (P1109BTL).

            By|Sep 22, 2026


              Is this too heavy for a 76 year old woman to use
              BySep 12, 2026
              1 Answer | 
              Answer This Question

              Hello, Katie - This lawnmower weighs about 35 pounds, and each battery weighs about 2 pounds. 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 ONE+ HP 18V Brushless 16 in. Cordless Battery Walk Behind Push Lawn Mower with (2) 4.0 Ah Batteries and (1) Charger (P1190).

              By|Sep 15, 2026


                Can the battery (18V, 4aH) be used with other Ryobi appliance such as blower and string trimmer?
                ByAug 10, 2026
                1 Answer | 
                Answer This Question

                Hello, Sirjml - If your blower and string trimmer use 18V batteries, then you can use these batteries with them. 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 ONE+ HP 18V Brushless 16 in. Cordless Battery Walk Behind Push Lawn Mower with (2) 4.0 Ah Batteries and (1) Charger (P1190).

                By|Aug 12, 2026


                  Viewing 1-8 of 280

                  Customer Reviews

                  4 out of 5

                  • 4 out of 4,000 reviews
                  • 72% recommend this product
                  Filter by:
                  Showing 1-10 of 4,000 reviews
                  Small, Lightweight, Easy to Run, Quiet.
                  Bought this product last week, and so far it's been great. I used a 6ah battery and it was plenty for the area I was mowing. I used the Mulch attachment that was provided and it did a Great Job. A very Clean Cut. I didn't have any Bogging issues and I mowed a very thick area of newly seeded rye grass. I also like how the machine is Quiet, Very Quiet. I was able to have a conversation on my head set without a problem while mowing, and even talk to some people while mowing. It's a tiny mower, easy to store, small width of cut. I can pick it up with one hand easily. Overall, I'm very pleased so far with this mower.
                  by
                    • Recommended
                    This mower worked as advertised. The battery life is a little embellished, as I figured it would be but ordered this one because I already owned one+ tools with many batteries to fit it. It is light weight and my wife can use it with ease. Also bought the trimmer edger that matches as well. All in all I give them a 5 star
                    by
                    Disappointed With This New Ryobi Mower – Feels Like a Step Down
                    I bought this mower because I already have many RYOBI power tools and wanted to continue using my existing 18V batteries. I purchased it to replace my previous 16-inch RYOBI mower, and I expected this model to have the same quality and performance. Unfortunately, I am very disappointed. My previous model had two battery slots, while this one only has one. This feels like a cheaper, step-down design, even though the price is not cheaper. The grass catcher bag was also much harder to assemble and install. With my previous mower, the bag came fully assembled and was ready to use. With this model, getting the bag assembled and properly in place was unnecessarily difficult. The biggest problem is the cutting performance. The mower does not give me a clean, even cut. The mower leaves behind uncut or missed blades of grass, even after going over the same area multiple times. I think the blade is not even sharpen. The motor is also noticeably louder than my previous RYOBI mower. The battery life is another major disappointment. The battery only lasts about 20 minutes of actual cutting, and I can't even finish half of my small front lawn before the battery runs out and it could be because it run on one battery instead of 2. With my previous 16-inch RYOBI mower, I could finish at least the entire front lawn. Overall, I am very disappointed with this model. I expected the newer mower to be at least as good as my previous one, but instead, it feels like RYOBI made several design and performance compromises while keeping the price from getting any cheaper. The shorter battery life, poor cutting performance, louder motor, single battery slot, and difficult bag assembly all make this feel like a significant downgrade from my previous mower.
                    by
                    Response from RYOBIAug 10, 2026
                    Hello, Sai_07607 - We're sorry to see that you're disappointed with this mower. This mower's kit includes two batteries, providing up to 40 minutes of runtime. Would you please reach out to us via our Contact Us page at https://www.ryobitools.com/support/contact? RYOBIOutdoorTools
                      4 found this review helpful
                      Buyer’s beware -
                      A complete piece of junk - it broke - called RYOBI the warranty repair place is 1 hour from my house called them to find out that they have too many RYOBI to repair and not taking anymore. Called RYOBI to relay this info- their next suggested warranty repair was 2 hours from my home. They promised to call between 8 and 10 for a video conference call to see if they can diagnose the problem- I waited, I had to leave at 1030 - they called around 1115 while I was on the road and not near the electric lawnmower. Called around to local repair places and all said that they do not repair RYOBI - they informed me that break again and again and not worth it. I’m literally cutting my front yard with a scissors since I have no money to buy another lawn mower. Buyers beware!!!
                      by
                      Response from RYOBIJul 1, 2026
                      Hello, Frustrated - We are very sorry to hear about this! Please feel free to contact us directly at Reviews@RYOBItools.com so we can get this matter resolved for you as soon as possible. RYOBIOutdoorTools
                        3 found this review helpful
                        Terrible… Better off buying a weed wacker
                        I have no idea how this mower has any higher than 1 star. I was excited to replace my cumbersome gas mower with this lighter weight mower to more efficiently deal with the small hilled area behind my gate and I love all of my other Ryobi One+ tools so this seemed like a good fit. Sure it’s a few more passes with only a 15 in cutting area, but it should be more manageable especially because it’s only about 300sqft in total…. It took more than 4 fully charged 4Ah batteries (like the ones included) to cut my grass and it could only effectively cut 4 to 6 inches of material at a time if you didn’t want the mower to stall out. It works slightly better than a weed wacker (although I’m pretty sure the weed wacker would run through less battery) I cannot wait to get this trash mower back in the box and back to the store.
                        by
                        Response from RYOBIJun 26, 2026
                        Hello, Mike z - We're sorry to see that you haven't had the best experience with your lawnmower. Would you please reach out to us via our Contact Us page at https://www.ryobitools.com/support/contact? RYOBIOutdoorTools
                          3 found this review helpful
                          Strong little mower
                          [This review was collected as part of a promotion.] I've had this mower for a few years and it's still going strong. I haven't babied this thing in the slightest either. I've used it to cut grass almost taller than it's handle and it's done it. I do have to go back and forth a few times when the grass is super tall, but the mower takes care of it. I only wish it had an attachment to discharge the clippings instead of just bagging or mulching.
                          by
                            • Recommended
                            This 16-inch mower is a perfect size. It is not too tough to cut grass that is about 3 inch tall. The mower is not heavy at all. A fully charged 4Ah battery drained to about 50% after about 20 minutes of running. I am very satisfied with the Ryobi 18V ONE+ products, which I can share battery packs with different 18V ONE+ tools.
                            by
                            Seems to work well, the included batteries last about 30 minutes which is fine. Manually pushing the unit is not hard. The unknown is the longevity of the unit as it has a lot of plastic parts, but it appears with careful use, it should last many years. I would expect the blade needs to be sharpened every year or two, just like gas mowers.
                            by
                            1 found this review helpful
                            Actually I purchased two the first one was short parts and Homedepot.com makes you refund it and order another one instead of trying to get you the parts you are missing. Which is a shame so my product rating was lowered as the open box and retaped shut should have been checked before it was shipped
                            by
                            • Verified Purchase
                            3 found this review helpful
                            Not so great!
                            I bought this as I have lots of RYOBI powertools and wanted to use existing batteries. I used it for one season and the deck broke on the first use on the next. My yard is not filled with rocks and I didn’t hear any loud noise that I should have been concerned off. I guess the plastic deck is not reinforced as it is supposed to. This is shameful that I have to buy another one coz the deck cannot withstand any impact.
                            by
                            Response from RYOBIApr 23, 2026
                            Hello, Raj21 - We are sorry to hear that your mower deck broke on the first use. If you would, please reach out to us via our Contact Us page at https://www.ryobitools.com/support/contact. RYOBIOutdoorTools
                              5 found this review helpful
                              Showing 1-10 of 4,000 reviews

                              Compare Key Features

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                              Product Snapshot

                              Great for homeowners looking for a cordless mower, making yard work easier and more efficient.
                              Great for homeowners looking for a lightweight and maneuverable electric mower , making lawn care easier . This corded mower features a comfortable grip and 6 height adjustments for a customized cut ..
                              Ideal for customers who want cordless power and versatility, ensuring easy mowing for medium yards.
                              Great for homeowners looking for a powerful cordless mower, making yard work easier and more efficient.

                              Cutting Width

                              16 in.
                              15 inches
                              16 in.
                              21 in.

                              Battery Runtime

                              40 minutes
                              40 minutes
                              Up to 55 minutes

                              Battery Voltage

                              18V
                              18V
                              40V

                              Adjustable Cutting Height

                              Power Source Cordless