40V HP Brushless 21" Self-Propelled Mower

Model: #RY401140

4.7 | 763 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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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 756.
Rated 5 out of 5 by from Just what I was looking for! This mower replaced a gas-powered mower that was hard to handle, especially in tight turns and over uneven ground. This battery/powered mower is much easier to maneuver and because of the large rear wheels it moves easily over rough ground, tree roots, etc. I usually use it in tight spots where my zero turn radius mower can’t get, and to do the lawn edges around our many gardens. Doing all my prep work consumes less than half of one battery’s charge, so I only have to recharge a battery approximately after every second use. Very satisfied!
Date published: 2022-09-26
Rated 5 out of 5 by from Easy to use! No more ignition problems. Everyone wants to use it, my wife, my son... Really ease to use!
Date published: 2022-09-26
Rated 5 out of 5 by from Great Mower I'm really pleased with my Ryobi mower. I have a yard that takes about 1 hour to cut and the 2 batteries are adequate for me to cut the entire yard. When the gas is a little high or wet, this mower does way better than my old gasoline mower. Instead of trying half cuts, going over it twice, or bagging when grass is a little high, this mower goes right through and mulches it well saving me a of time. I've since expanded my lawn and garden tools with the 40-volt trimmer and hedge clippers and have been very pleased. This has been great!
Date published: 2022-09-25
Rated 5 out of 5 by from Great cut This mower creates a great cut and is Leigh’s weight and easy to handle
Date published: 2022-09-22
Rated 5 out of 5 by from Everthing i hoped for and more I bought this mower a month ago. Very happy with it. I have a small yard, abut 5000-6000 square feet. After mowing both front and back, the one of two batteries still has 1/4 charge left. So quiet, you can carry on a normal conversation with sombody walking beside you. The first time I used it my wife never heard me mowing from inside the house , big difference from the gas mower i replaced.
Date published: 2022-09-22
Rated 5 out of 5 by from Gets the job done! Bought this a few months ago based on the claim that it was suitable for up to 3/4 acre and a 70 minute runtime. I only have 1/3 acre and should be able to mow it in less than an hour. However, one of the batteries would not take a full charge, giving me only about 15 minutes of runtime. Ryobi replaced it fairly quick, but I ended up having to buy a 3rd battery, as my 1/3 acre seems to require at least 18ah to get done. No big deal, but the marketing people really need to do a better job at managing expectations. I'm now looking at buying the 40v power head and snow shovel, trimmer, and edger attachments. Some of my 18v tools are still running strong after 20 years. If I can get half that from the 40v series, I'll be happy! Oh, and yeah, this mower does a fantastic job with mulching, discharge, and bagging!
Date published: 2022-09-22
Rated 5 out of 5 by from Love my new mower Replaced my Arians gas mower with the RY401140 Ryobi Mower and could not be happier. Good battery life. Light and easy to operate. Not sure why I waited so long to replace my gas mower. Love the lever that raises and lowers all four wheels at once. What a time and back saver that is
Date published: 2022-09-19
Rated 5 out of 5 by from Wow what a great purchase Wow what a great purchase I made! I'm really happy because it makes little noise and works great, plus it starts with just one button. It has a very beautiful color!
Date published: 2022-09-18
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