Model: #RY40LM30

4.5 | 252 Reviews
Visit interactive landing page to learn more about this mower. Exceptional performance. Powerful Innovation. Powered by an intelligent Series V Brushless Motor and a high-capacity 6.0Ah 40V lithium-ion battery, this mower delivers GAS-LIKE POWER™ and cuts up to a half acre on a single charge. SMART-TREK™ Self-Propelled Technology intelligently and intuitively adjusts to your walking speed making your mowing experience exceptionally convenient. With the EASY LIFT SINGLE-MOTION RELEASE & LOCK BAGGER there are no more complicated procedures or acrobatics required. A quick pull up to empty and simple drop-in of the bagger gets you back to mowing faster and with less frustration. With its quick-release knobs and foldable handle, it’s perfect for compact storage but is always ready to go in seconds. Best of all, it’s simple to start. No more gas, oil or pull cords. Simply snap in a charged battery, set your cutting height with the 7-position single point height adjustment and push the button to begin mowing.


Ryobi five year warranty
*Tool Warranty

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

Ryobi three year battery warranty logo
* Battery Warranty

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

The RYOBI 40V System features over 50 products, providing versatility to get the job done.

View our current catalog for new product releases and the latest RYOBI savings!

Ryobi Help+

Your one stop destination for tips & techniques, manuals, troubleshooting, FAQs and more!


  • Battery: 40V 6.0 Ah Lithium-ion
  • Drive Type: SMART-TREK™ Rear-Wheel Self-Propelled
  • Self-Propelled Speed: Variable, Up to 2.9 MPH
  • Deck Size: 20"
  • Cutting Height: 1.5 - 4"
  • Deck height Adjustments: 7-Point
  • Start Type: Push Button
  • Cutting Options: Mulching, Bagging & Side Discharge - (Accessory Sold Separately)
  • Recommend Yard Size: Up to 1/2 Acre
  • Warranty: 5 Year-Limited
  • Weight: 45 lbs.


  • 40V 20 IN. BRUSHLESS SMART TREK™ Self-Propelled Mower
  • 40V Lithium-ion 6.0Ah Battery
  • 40V Battery Charger
  • Bagger
  • Start Key
  • Operator's Manual
  • 5-Year Limited Warranty


40V 20" BRUSHLESS SMART TREK™ Self-Propelled Mower WITH 6AH BATTERY & CHARGER is rated 4.5 out of 5 by 252.
Rated 5 out of 5 by from Great Mower Bought this today and was wondering how good it was. I was really impressed with the power and the ease of moving the mower. The fact that is has a bar that compresses to engage the self-propelling is great. When I needed to backup it stopped moving forward so I did not have to fight it to do what I needed. It is also really light which I liked. It folds up which is great for storage. My wife wanted a mower that she could start really easy. Guess what! It starts really easy. Hold the safety bar then push the start button. She just might get a blister on her index finger (hehe just kidding). So I only tried it once but so far so great.
Date published: 2019-05-02
Rated 4 out of 5 by from Good quiet, clean running mower. Have owned the 40V self-propelled mower with the 6 aH battery for about a month and have been very happy with its performance. My lawn is about 1/4 acre and I can get about 3 mowings on 1 charge, so battery life isn't an issue for me to complete the job. Really like being able to mow without the noise and smoke from gas powered mowers. Not to mention it is nice to not have to deal with the gas problems ethanol creates with small engines! Only a couple minor issues are the motor doesn't create as much torque on grass so some longer grass that is laying flat isn't lifted into the blades, and turning is a bit awkward when in self-propelled mode.
Date published: 2019-06-10
Rated 5 out of 5 by from Quiet and easy I've had trouble with gas mowers and weed eaters. I think that I'm a fairly strong women, but no matter how much I pull the starter, I usually can't get them started. So I told my husband that I wanted to try the Ryobi 40v weed eater. He was skeptical. Well we liked the Ryobi weed eater so much, we decided to try the lawn mower too. We LOVE this mower! It's quiet. It's easy to use and store. There's no odor from gasoline and no vibration from a combustion motor. We can mow our town size lawn (approximately 6000 sf of grass) on a single charged battery.
Date published: 2019-08-05
Rated 1 out of 5 by from Pretty much got took My wife and I bought this mower and the salesman said it would cut 1/2 acre on one battery. I was a little suspect but thought o.k. if one battery is enough two should really be enough. Plus bought the most expensive weed wacker they had from Ryobi as well. Well, guess what. Not even using two fully charged batteries does this thing last long enough to cut a 1/2 acre. Totally frustrated. My wife said, "should have bought a gas one". Now the only thing I think I can do is buy another expensive battery so I can cut the lawn without waiting for batteries to charge. I feel like a fool listening to a salesman and not going with my wife's opinion.
Date published: 2019-06-20
Rated 5 out of 5 by from Great mower! This is my first battery mower and I expected the "power of gas" line to be rhetoric. But this mower really does mow like a gas mower...only quieter, lighter, easier to start, and easier to store (I love the vertical storage--it sits upright for compact storage). Had my son mowing today and then I took this mower off the lawn onto some deep grass and brush to see how it performed--like a champ! The variable speed cutter senses when it needs more power or less, and had no trouble with battery time. I have a medium-small yard, so for larger yards you may want two batteries. But if you don't have a huge area to mow and you want super easy plus high quality, this mower is for you.
Date published: 2019-08-14
Rated 4 out of 5 by from Love it, when it worked! This was a gift received for my birthday and was a great replacement for my previous Ryobi 16” 40 volt mower that I had bought back in 2016; however, after just a month (only 5-6 uses) the self propelled feature stopped working in the middle of doing the yard. I have gone through all the trouble shooting available and still this does not work. I will be calling to see how to have this addressed as the store no longer stocks this item and I do not wish to have a store credit for this amount of money. Please feel free to contact me so that I can have this item replaced so that I can get my yard in shape before the winter sets in. Love it! When the self propelled feature worked
Date published: 2019-10-13
Rated 4 out of 5 by from Read this review ! After my gas mower died i got this few days ago We had 3 nonstop raining days here in Michigan And the gras was wet! I cant believe this cordless mower did the job It was very tall weedy grass too Until the battery killed my excitement just needed 5 more minuets of running time I think Ryobi should either sell it with the 7.5 ah or 2 batteries I tried to recharge the battery immediately after it stopped but you need to cool it down before it charges I wish it came with another battery
Date published: 2020-05-19
Rated 5 out of 5 by from 2 years later and still love it. I bought this because I wanted more no more noise and nasty gas engines. Brought it home in Wife's Nissan LEAF. Works excellent since day 1. I can mow all yards front and back in 1 hour. Normally use 25-80% of 1 battery. If I try to cut too short I will run out. My wife actually likes to mow now. This is so quiet and easy to use. I got rid of all gas tools. Mowing the yard and tree trimming has never been better. I have the 40v chainsaw. Lots of 18v stuff also. My next mower will be the self propelled. I sold a self propelled honda to upgrade to this one.
Date published: 2019-09-13
  • y_2021, m_2, d_24, h_24
  • bvseo_bulk, prod_bvrr, vn_bulk_3.0.14
  • cp_1, bvpage1
  • co_hasreviews, tv_11, tr_241
  • loc_en_US, sid_308268265, prod, sort_[SortEntry(order=RELEVANCE, direction=DESCENDING)]
  • clientName_ryobioutdoortools