40V HP Brushless 21" Self-Propelled Mower

Model: #RY401140

4.7 | 851 Reviews
  • 40V HP Technology delivers GAS-LIKE POWER™
  • 3-in-1 Mulching, Bagging, and Side Discharge
  • Variable Speed Self-Propelled
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More Power. Longer Runtime. Longer Motor Life.


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*Tool Warranty

All RYOBI 40V tools are covered by a 5-year limited warranty.

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* Battery Warranty

All RYOBI batteries are covered by a 3-year warranty.

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Cutting Height
1.5" - 4"
Deck Size
74 lbs.


(2) 40V 6.0 Ah Battery
Deck Height Adjustments
7 Position Single Point
Estimated Runtime
70 mins.
Mowing Function
Bagging, Mulching, or Side Discharge
Recommended Yard Size
Up to 3/4 Acre


5 year tool warranty and 3 year battery warranty



40V HP Brushless 21" Self-Propelled Mower
40V HP BRUSHLESS 21" SELF-PROPELLED LAWN MOWER KIT is rated 4.7 out of 5 by 848.
Rated 4 out of 5 by from Good mower Mower works well for first month. Performs as advertised.
Date published: 2023-05-24
Rated 5 out of 5 by from Great mower! Great mower, no gas needed. Works well & easy to use!
Date published: 2023-05-23
Rated 1 out of 5 by from Self Propelled Inoperative Only used twice. The self propelled drive is inoperative. Pull the handle and clicks, but no drive. Called support and sat on hold for a complete hour. Called a repair facility that they authorize and no answer.
Date published: 2023-05-22
Rated 5 out of 5 by from Great mower Used it for the first time tonight and I'll never go back to gas. Plenty of power, lots of life, lightweight, quiet, and the self propelled makes things easy
Date published: 2023-05-22
Rated 4 out of 5 by from Lawnmower Better than I expected. The pricing is still outrageous in my opinion.
Date published: 2023-05-21
Rated 4 out of 5 by from Speak pro former I just purchased this , very easy to set up .. powerful.. I have a large yard..run time is great .. easy mobility.. and look beautiful.
Date published: 2023-05-19
Rated 4 out of 5 by from Excellent buy unless you need customer service. I would have loved to give 5 stars because it's hands down the best mower I've ever owned but I had an issue still with the Self-Propelled feature not engaging still left unresolved. Customer service is a joke!
Date published: 2023-05-18
Rated 5 out of 5 by from Gray power and features. This mower is fantastic. I love the power and how economical it is to use compared to gas models and less restrictive than corded electric models.
Date published: 2023-05-17
Rated 1 out of 5 by from Extremely disappointed Piece of crap! Will never buy electric again. Bought this a year ago from Home Depot. Box said about 3/4 acre rating. I have 3/4 acre total, and at least 1/3 is non-mowable - tree lines, islands, etc. Hot days = 1/2 battery life and difficult to charge until battery cools off. High thick grass (4-5") = 1/2 battery life. I have a grade in my backyard (no steep banks) = 1/3 battery loss. Hot day with high grass = 5-6 hours of cutting grass on 1/3 of an acre. I literally cannot cut 1/2 acre - my front yard and my back yard on the same freaking day. I initially took the batteries and exchanged them at Home Depot, thinking the batteries were defective. Nope. Later I learned that on summer days, you have to either put the discharged battery in the freezer, or wrap and ice pack around it so it cools off. Otherwise, you put it on the charger and after 5 seconds it errors. Only cool batteries charge. To do my whole yard in one take I would need 4 more batteries - at $120+ per battery, NO WAY! Stay away and stick to gas unless your yard is completely flat, about 1/8 acre and square. The further north you live, it will probably perform better. Early spring and late fall is when it performs a little better (still cant mow entire yard on same day). I live in PA so...
Date published: 2023-05-14
Rated 2 out of 5 by from Bad Purchase This mower is coming up on one year old and one of the very expensive batteries doesn't work anymore and the self-propelled feature doesn't work either! Tried to get ahold of Ryobi and their chat bot is usless!
Date published: 2023-05-14
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