EGO LM2135SP Select Cut Cordless Mower Review

EGO LM2135SP Select Cut 21″ Self-Propelled Cordless Mower Review

EGO LM2135SP Select Cut Mower

Manufacturer: EGO
Model number: LM2135SP
Price: $649
Power source: 56V Arc Lithium Battery
Motor size: 7.0 Ft/lbs
Weight: 62.5 lbs
EGO has just announced their next generation 21″ self-propelled mower model and we have had the chance to put the new EGO LM2135SP Select Cut Mower through its paces.  Check below for a comprehensive review to see if the sweeping upgrades to EGO’s flagship mower will meet your needs before it hits store shelves on December 31st.


  • Dual Blade
  • Self-Propelled
  • 7.0 ft/lbs.. of torque
  • Touch Drive Technology
  • Push Button Start
  • 7 Cutting Height Settings
  • Compact Storage
  • Weather Resistant Construction (ipx4)
  • LED Headlights
  • 3-IN-1 Function: Mulching, Bagging, Side Discharge (chute available upon request)
  • 3 Position Handle Heights
  • One Handed Height Adjustment
  • 5 Year Warranty

EGO G3 Cordless Mower Specifications

  • 21″ Deck
  • Variable Speed : 1.8 MPH – 3.6 MPH
  • 7.0 ft/lbs.. of torque
  • Maximum Cutting Height: 4 inches
  • Minimum Cutting Height: 1 ½ inches
  • Grass Bag Capacity: 2 Bushels
  • Rear Wheel Size: 9 inches
  • 62.5 lbs

EGO 56V Platform

If you’re still unfamiliar with  theEGO OPE lineup, where have you been?  Backed by the global powerhouse manufacturer Chervon, EGO’s 56V OPE lineup hit the market in 2014.  Since then, they have produced dozens of high quality battery powered cordless OPE tools.  Here in the USA, we love our lawns and EGO’s lawnmower lineup have become increasingly popular options to tackle that chore.  At the core of all EGO Power+ tools is the Arc Lithium 56V battery.  The battery that fuels the line features a shock resistant housing that,  like all their tools looks like something out of a sci-fi movie.

Integral to the performance and tested alongside the new Select Cut 21″ Mower was EGO’s highest capacity 7.5 Ah battery, the BA4200T.  The BA4200 weighs in at 6.31 lbs.., boasts a 420 watt hour capacity and can be recharged fully in 60 minutes with the EGO rapid charger. All batteries in the EGO line have a 3 year limited warranty.

New With The EGO Select Cut Cordless Mower

The EGO Select Cut mower has undergone a face lift on the outside and is sporting a few performance upgrades on the inside.  EGO spent some time mulling over customer feedback that the mulching and bagging aspects of the mowers could be improved.

NEW Dual Blade Feature

The biggest upgrade to the 21″ mower is the addition of a dual blade system.  These two blades are coaxial meaning they share the same axis as opposed to a side by side that is common on larger commercial mower decks.  The goal is to provide multiple layers of cuts to the grass resulting in finer clippings.  The deck has also been redesigned to work more efficiently with the additional blade.  For increased mulching performance a specialized EDGE TRI-Cut blade can be used.  This blade was not available for our testing.

At the heart of the mower is new upgraded brushless motor sporting 7.0 ft/lbs… of torque.  That’s up from 5.9 ft/lbs.. in the previous generation.

EGO Select Cut – Ease of Use

EGO’s first generation mower took top honors in our Best Cordless Electric Lawn Mower Head to Head back in 2014, winning arguable the most important category of “Cut quality and Performance”.  Additionally, they performed best in our “Handle Comfort and Adjustability” and “Compact Design and Storage” categories.  Over the years and the incremental mower models, EGO has only improved is dominance in these areas.

NEW EGO Touch Drive Technology

The EGO LM2135SP Select Cut has moved all interface controls and information to the well design handle grip area.  The mower has retained its predecessors 3 step motor safety activation process of holding down the power button and then pulling on the activation bar. The final two steps cannot be completed until the handle bar has been extended to its fullest length.  On the dashboard of the handle bar is an on/off switch for the LED headlights (its quiet enough to run at night and not irritate the neighbors) which used to be located down be the battery housing.  Additionally located on the right side is status indicator light with a convenient explanation diagram.

The top bar houses all the self-propelled controls in one location.  In the center is a variable dial to control the forward speed of the mower between 1.4 -3.6 mph.  Two palm or thumb activated buttons rest on either side of the handle which enable one handed operation from either side.

EGO LM2135SP Storage

No change (almost) is good here! The EGO Select Cut mower retains its easy to implement and compact folding design.  By using a single handled “Quick Adjust Lever” the mower handle can be adjusted from three different handle heights into a collapsed folded position with ease.  Once folded, the mower can be stored in the horizontal or vertical position.

One change that I did notice was the re-positioning of the carrying handle inboard and up toward the battery housing.  In prior models the handle was out on the nose of the mower deck and when folded, lined up nicely with the operating handle.  This allowed me to store my mower not only vertically but vertically on a wall hook.  While most users might not mount their mower on the wall I certainly miss the ability to do so.

EGO LM2135SP Performance

I have been impressed with my 21″ self-propelled mower by EGO in the past so I was eager to test the new model in a few side by side comparisons.  When I got my hands on this mower it was already late November in New England.  As such the grass cutting season was over.  However we did have quite a few items in my lawn to test the mulching and bagging power of the EGO Select Cut mower.  Oak Leaves!

As an impromptu head to head test between my older LM2100SP mower against the new LM2135SP Cut mower, I  layered an even coating  in a respectable sized area.  I then started off by running both mowers in bagging mode on the slowest self-propelled setting over a single pass. LM2100SP is on the left and the newer LM2135SP Select Cut is on the right. This yielded no clear winner.

Next up I repeated the test but this time in mulching mode.  Like previous generations the mower comes with a plastic insert that gets put inside the discharge chute to effectively plug the hole and force the mower to mulch.

Here was the first sign of real improvement from the introduction of the second blade.  The right hand swath cut by the newer Select Cut Mower had significantly smaller leaf remnants.

EGO LM2135SP Mower Run-time

EGO claims up to 60 minutes of mowing time when paired with a 7.5 Ah battery.  The mower can be operated without the optional powered drive feature to extend battery life. For battery performance I ran an endurance test that consisted of setting the self-propel to its highest/fastest and ran the mower until the battery depleted.  Grass resistance was minimal as again this was done in November but there was residual leaves to provide some blade resistance.

The battery ran for 50 minutes before taping out. At a brisk pace of 3.6 miles per hour, I covered 3 miles of mowing!   At 21″ wide, that area covered equals 27.000+ sq. ft.. The battery wont last as long under heavy cutting load but significant battery drain can be attributed the drive motor running at full speed.  Even at half that estimated area if you are cutting a ~13000 sq. ft. lawn with a 21″ inch push mower, it might be time to consider a ride on mower.

EGO G3 Cordless Mower – Where To Buy

If you’re in the market for a new walk behind mower, especially if you have been considering making the jump to all electric, then the LM2135SP is certainly worth a consideration.  It has been the best performing, well thought out and easy to use electric mower we have tested to date.

The EGO LM2135SP will ship with a 7.5Ah battery delivering up to one hour of run time and a 550W charger that will recharge the battery from empty to full in 60 minutes. This package will cost $649 when it launches on December 31st and will be available at The Home Depot.

EGO LM2135SP Select Cut Cordless Mower VIDEO Review

About the author

Jeff Deitz

Jeff Deitz is a trained Mechanical and Systems Engineer but underwent a career change a decade ago to pursue a career in aviation. Jeff joined the Concord Carpenter team several years ago to assist with smart home automation and electronic integrations. After working with Rob on several projects, Jeff quickly gravitated to Tool Box Buzz’s Head 2 Head tests. Using his background as a systems test engineer he can frequently be found with a few other TBB crew members discussing the finer points of tool testing and designing the next Head 2 Head tool test.

All posts by Jeff »


  1. G. S. Smith

    Do you know the dimensions of the box for this mower? Customer wants to know if it will fit in his car.

    1. Todd Fratzel

      no clue…we ditch boxing when we unpack them

  2. Ray O'Russa

    Does the 2135SP have power on only the left rear wheel, with the rear right not providing drive power? I saw a review of an earlier Ego mower that had power only on the left wheel. I don’t think I’d like that, and is maybe a deal-breaker? How does it feel and operate if it has power only on the left rear wheel? Thank you.

    1. Todd Fratzel

      The 2135SP has power being delivered to both rear wheels via a solid axle and two sprag clutches located at rear wheel hub.

      1. Tony Handy

        Hi, my garden is on a steep incline of about 30 degrees, is this likely to affect battery performance?

        1. Todd Fratzel

          Anytime you’re going to cut on hills with a self propelled unit it will require more power, and that will impact battery run-time.

  3. Ray O'Russa

    Is the practical usage of the self-propelled left rear wheel-only a problem? It seems like it would want to pull to the right too much of the time. I’m guessing they are trying to save battery power by having only one drive wheel in the rear.

    1. Todd Fratzel

      The 2135SP has power being delivered to both rear wheels via a solid axle and two sprag clutches located at rear wheel hub.

  4. diana jaroszewski

    do any of the ego power mowers come with a 10 amp battery and is the cost extra

    1. Todd Fratzel

      Not aware of any.

    2. LMinnelli

      The 2021 EGO LM2156SP has a 10 amp battery for 75 minutes of run time. There are a few comparisons online going over the 2020 version LM2135SP with the 2021 version.

  5. Scott

    Great info. One question… Ego says not to clean the grass from the deck with a hose. So, do I need to worry about wet grass?

    1. Todd Fratzel

      Not at all, it’s really so you don’t get water into the electric components, it’s just a precaution. I’ve mowed lots of wet grass with it.

      1. Scott

        Great, thanks. Not that I cut wet grass, but it’s not always completely dry. They said no to wet grass.

  6. Laurie

    What are the dimensions of the footprint of the Ego #LM2135SP mower in the vertical position? How much floor-space do I need to dedicate to storing it?

  7. Laurie

    What are the dimensions of the footprint of the Ego #LM2135SP mower in the vertical position?

    1. Not sure – I believe we listed it in our 2020 written review

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