13 Amp Electric Lawn Mower - 21" Corded Push Mower

SKU: 25112  |  Model # LMA145
$499.99
Shipping calculated at checkout.

Key Features

  • Push Button Start
  • Powerful 13Amp Motor
  • Durable Steel Deck
  • 3-in-1 (Mulch, Bag or Side Discharge)
  • Effortless Maneuverability
  • Compact Storage
  • 3 Year Warranty
  • 7 Position Cutting Heights

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Description

Welcome to a Life. Powered. by Greenworks. Kick gas to the curb and go green with this premium electric lawn mower! With Greenworks electric outdoor power equipment giving you all the power you need to tackle your yard, you can now breeze through jobs with zero gas, zero emission and zero maintenance. Go from zero to power with a push of a button and get through the task at hand with less vibration, less noise and less mess. Corded power with unlimited runtimes means this electric lawn mower can get all of your landscaping done with all the power performance of gas while at a lower cost of operation. Never stop cutting with the Greenworks 13 Amp 21" Corded Push Electric Lawn Mower. This premium corded electric lawn mower features a durable steel deck, 7 cutting heights from 1.5" to 4", push button start for instant power, and folding handles for compact storage. Perfect for larger lawns with unlimited runtime, this high-performance electric lawn mower delivers consistent 13 Amp power without battery charging or gas mixing. Plus, all Greenworks corded electric lawn mowers feature a 3 Year Limited Tool Warranty to ensure your investment is protected.

  • [PREMIUM ELECTRIC LAWN MOWER] Powered by a 13 Amp high-efficiency electric motor on this corded electric lawn mower for a high-quality cut every time with unlimited runtime.
  • [DURABLE STEEL CONSTRUCTION] The durable 21-inch steel deck on this electric lawn mower allows you to handle large areas of grass quickly and easily. With 7 different cutting height options, you can ensure the best cut in all environments.
  • [SIMPLE PUSH DESIGN] Work at your own pace and embrace simplicity with our lightweight, easy-to-use electric push mower. The cord retainer helps keep your extension cord secure while you operate your electric lawn mower. Recommended to use with following extension cords: 25' 14 AWG or 50' 12 AWG. For more details on appropriate extension cord use, please refer to the owners manual.
  • [VERSATILE 3-IN-1 CUTTING] Convenient 3-in-1 cutting deck lets you choose your cut finish from mulching, bagging or side discharge with this premium corded electric lawn mower.
  • [EFFORTLESS MANEUVERABILITY] Equipped with 10-inch rear wheels and 7-inch front wheels for easy handling and transportation in even the toughest of terrains with your electric lawn mower.
  • [SPACE-SAVING STORAGE] Ergonomic easy-to-use controls guarantee ultimate comfort while operating your electric lawn mower. Plus, use up to 70% less space in your garage with folding handles for compact vertical storage.

Specifications

  • Weight
    55 lbs.
  • Assembled Product Dimensions
    45.6" x 45.6" x 21.6"
  • Package Dimensions
    31.4" x 23.2" x 17"
  • Package Weight
    61 lbs (28 kg)
  • Motor
    Brushed
  • No Load Speed
    3600 RPM
  • Deck Size
    21"
  • Deck Material
    Steel
  • Blade Size
    20"
  • Blade Material
    40MnB
  • Blade Nut Size
    Standard Thread M10 1.25
  • Deck Height Positions
    7
  • Deck Height Range
    1 3/4—3 3/4" (4.5 -9.5 cm)
  • Handle Positions
    2
  • 3-in-1 Function
    Mulch, Side Discharge and Rear Bag
  • Wheel Size
    10" (25.4 cm)
  • Wheel Material
    Polypropylene/PVC
  • Noise Level @ 0' (User)
    89 dB
  • Self-Propelled
    No
  • Vertical Storage
    Yes
  • LED Headlights
    No
  • Waterproof Rating (IPX)
    IPX-4
  • Compatible Extension Cord -25 Ft/ 7.62m
    14-gauge cord
  • Compatible Extension Cord -50 Ft/ 15.2m
    12-gauge cord
  • Estimated Assembly Time
    ≈15 minutes
  • Warranty
    3-Year Warranty

Manuals

Includes

  • 13 Amp 21" Electric Lawn Mower
  • Mulch Plug
  • Side Discharge Chute
  • Rear Grass Bag
  • Owner's Manual

FAQs

Can I use my Greenworks mower on hills and slopes?
Walk behind mower units should not be operated on slopes greater than 15 degrees. This is not a limitation of the unit, but rather to ensure safe footing for the user. When mowing on a hill remember to mow across rather than up and down.
What maintenance is required for my Greenworks mower?
Greenworks mower units require much less maintenance than a traditional gas unit. However, It will still require routine seasonal maintenance. After each use we advise emptying the bag (if bagging has been used), then check/clean off debris on the side discharge, rear slot, clean the underside of the deck with a cloth and wipe the unit down. If there is harder debris stuck to the underside, you may want to use a rubber deck scraper. Make sure to check the unit for loose nuts and bolts after use and secure if needed. Do not expose this unit to water. Check the blade for any damage/dullness and replace or sharpen as needed. Store the unit in a cool/covered and dry location such as garage or shed.
When should I cut my grass?
Here are some mowing tips that may be helpful: • Mow when grass is dry. Mow no more than 1/3 of the length of grass at a time. • Mow in the morning or late afternoon to reduce the heat stress on the newly cut grass. • Alternate mowing patterns each time you mow. As grass develops a grain based on your cutting direction it will lean towards the direction of your mowing path. Changing the pattern allows better vertical growth and helps to keep the cut neater. • Consider mulching. To mulch, remove the bag and insert the mulch plug into the rear of the unit. This will leave the clippings on the lawn allowing the nutrients and nitrogen contained within them to return to the soil and allow the remaining grass to recycle them (always discharge the mulch towards a previously cut area to prevent your mower from bogging down). • Leave grass a little higher in shaded areas. This keeps them healthy in relatively nutrient poor conditions. • Always keep in mind what conditions your variety of grass prefers. If your grass prefers cooler climates, reduce the frequency with which you mow and increase the cutting height of your mower during hot seasons to compensate for the reduced growth rate these varieties may experience in this type of weather.
Do I always need to use my self-propelled feature when operating a self-propelled mower?
No, you do not have to engage the self-propelled feature to operate a self-propelled unit. There are two separate motors. Familiarize yourself with the self-propelled feature and the cutting feature of your unit (instruction inside the manual). Once you understand these two features you can engage the blade without using the self-propelled feature.
Can my Greenworks mower cut up pinecones, branches, twigs, and other yard debris laying on my lawn?
Greenworks mower are designed for grass, weeds, and foliage. It would not be advisable to depend on the mower to mulch any other types of debris. Before operation please thoroughly inspect the area where the mower is to be used. Remove all stones, sticks, wire, toys, and other objects that could be tripped over or thrown by the blade. Thrown objects can cause serious personal injury.
Can I use my mower in wet conditions such as rain?
For safety reasons (which can be found inside your owner's manual under safety information) we advise not using the mower in wet conditions as unstable footing could cause operators to slip, causing a potential hazard. *60V X-RANGE line which features IPX4 weather-resistant construction and can be safely used in damp conditions. Be mindful of your footing during use in potentially slippery conditions. *
What does SmartCut™mean?
The SmartCut™ feature, also considered a Power Save feature, is designed to maximize run time and battery life by automatically detecting the length of grass and adjusting its power or throttle up when needed. With this feature, the rotational speed of the blades will not always stay the same. They will spin faster automatically when you hit thicker grass.
Does my Greenworks mower unit require gas or oil?
No, gas and oil are not required for the operation our units. Greenworks mowers are either battery operated or corded (extension cord sold separately). This information can be seen on the product page of each tool and inside the owner’s manual.
Is the battery from my Greenworks mower interchangeable with the other units?
Greenworks offers a variety of different voltage lines for a wide range of individual residential needs. For example, we offer: 24v, 40v, 60v and 80v. Each voltage line has their own set of interchangeable tools and batteries but are not interchangeable across different voltage lines. To see compatible tools within each voltage line select shop by platform on our site. If you’re still unsure if your unit is compatible, please contact us at info@greenworkstools.com for further assistance. We’re happy to help
How do I start my mower unit?
For corded units, ensure you have the correct extension cord (reference the owner’s manual) and power from your outlet. If you’re using a battery unit, ensure the battery has a full/adequate charge. Make sure you are starting the unit in the following order, or it will not start: 1. Push down the safety switch button, while pressing the safety switch button with one hand, use your other hand to simultaneously pull the bale switch towards you. 2. Once the machine turns on you can let go of the safety button and continue to hold the bale (lever) handle. 3. The unit will only start when the safety button is pressed first, followed by the bale switch. If it is reversed the unit will not power on. For some of our EZ Fold™ units the start sequence will not affect the unit. Use the correct batteries according to the unit and ensure the batteries have adequate charge, you can either push the button first or pull up the handle. These models are not affected by the start order. However, please always refer to your owner’s manual for verification on the starting process as this would be the most accurate source of information.
Looking for a compatible part/accessories for this unit?
You can find the related parts and accessories on our parts finder by clicking here.

Product Videos

This 13-amp corded electric mower delivers strong cutting power and is lightweight. Customers praise its reliability, ease of use, and eco-friendly design. Many report years of trouble-free operation, excellent mulching, and easy height adjustment. However, some experienced reliability issues after minimal use, power switch failures, and handle durability concerns.

Mower (positive)Grass (positive)Power (positive)Cord (neutral)Handle (negative)
  • 5 stars: 48 (67%)
  • 4 stars: 11 (15%)
  • 3 stars: 1 (1%)
  • 2 stars: 1 (1%)
  • 1 star: 11 (15%)
M
Masoud
Worked Fine Once, But Failed After Minimal Use

I purchased this lawn mower last summer and only used it once. Recently, when I tried to use it again, it would not start at all.

Before assuming the mower was defective, I tested it with several extension cords and different electrical outlets to make sure the issue was not related to the power supply. Unfortunately, the mower still would not operate.

I was disappointed because the unit has seen very little use and has been stored since last season. Based on my experience, I expected better reliability from a product like this. I hope this issue is unusual, and I plan to contact customer support to see whether there is a solution.

Hi Masood. Thank you for your detailed feedback. We are sorry to hear about your experience.

Greenworks Tools corded AC units are backed by a 3-year manufacturer's warranty. Before proceeding with warranty assistance, we recommend trying the following troubleshooting steps:

Check for any debris that may be lodged underneath the mower deck.
Ensure the unit is being started correctly by pressing and holding the start button before pulling the bail bar toward you.
Verify that the unit is connected to a functioning power source.
*If you have any new inquiries, please do not hesitate to contact us directly for further assistance via chat or by phone at 1-888-909-6757 (1-888-90WORKS). In the meantime, please check your inbox for your latest communication. Thank you for choosing Greenworks Tools!

M
Masoud Imen
Worked Fine Once, But Failed After Minimal Use

I purchased this lawn mower last summer and only used it once. Recently, when I tried to use it again, it would not start at all.

Before assuming the mower was defective, I tested it with several extension cords and different electrical outlets to make sure the issue was not related to the power supply. Unfortunately, the mower still would not operate.

I was disappointed because the unit has seen very little use and has been stored since last season. Based on my experience, I expected better reliability from a product like this. I hope this issue is unusual, and I plan to contact customer support to see whether there is a solution.

B
Bindu
BroPower swtich has loose connection , doesnt

Brough this lawnmover from Green works online, worked fine for two months then it started giving problems..Power swtich has loose connection , machine wont start

Thank you for sharing your experience, and we are sorry to hear the mower is no longer starting after a period of normal use. For corded electric mowers like the 13 Amp 21' model, a no-start condition is often related to a safety or connection issue, so we recommend first ensuring the extension cord is fully seated and in good condition, then checking that the handle is completely locked into place, as the safety interlock system requires full handle engagement to allow operation. Also confirm that the bail/power lever is being fully pulled against the handle, as a loose or inconsistent pull can prevent proper switch activation. If the power switch feels loose or intermittent, inspect the handle and switch housing area for any visible movement or misalignment, as this can affect the internal safety of contact. We also recommend reviewing the official Assembly guide from Greenworks Tools, which demonstrates proper handle assembly and startup procedure. You can view the video here (https://youtu.be/ZNGWpYHDV_I).
If the issue continues, the best next step is to contact support directly via chat or phone on 1-888-909-6757 so the switch and safety circuit can be properly diagnosed.

2
246355106
blows fuse

i just bought brand new lawn mover i kkeps tripping my breaker when i start cutting it works fine but as soon as i release the handle to stop power ti it my breaker trips and i just took it out of the box

2
241290679
Great lawnmower

Really enjoy mowing my yard with this corded lawnmower. The yard looks great after completion and so far no problems at all.

2
241149240
Greenworks Makes me Smile

mulching with my greenworks electric plug in makes me smile with every step I take while walking my 1.3 acre property. Using my solar panels for power my carbon footprint is 0. Thank you Greenworks for helping me to do my part to reduce carbon emissions!!

2
241133653
Everything I needed in a mower

This mower is great size weight and performance for our yard. Easy to use and maneuvers well around edges and corners. With 13 AMPs I can definitely tell the improvement over my old lawnmower.

2
241119990
Pleasantly surprised!

I have a moderate sized yard and by the time my lawnmower arrived (super fast shipping) it was in desperate need of some love. I was pleasantly surprised that it powered through my thigh high grass. I honestly was expecting it to take a few tries. That marks the day that I fell in love with this mower! I don't have to worry with gas just plug and go. Very simple to use quality material and honestly it makes yard so easy it's fun!

2
241007882
Great mower!

A well engineered mower for mowing and mulching.

2
241004491
Heavy body flimsy wheels

Wheels see flimsy

2
240994967
I love my corded lawn mower

I had a gas lawn mower and it died finally so I was going to purchase another one and decided on something different and glad I did no oil and gas messiness. Just plug in and go. I made the right decision. I love my corded lawn mower. Great power to.

2
240863292
Great Mower!

I bought this mower in 2013 9 years later in 2022 it still runs great. I have used it in two rather large yards both with rough places under trees with some rocks. I have used this mower hard. We just now replaced the blades I managed to chip and bend. It works great still! New blades and it is cutting like new.

2
240829092
Nice mower.

Very nice mower. Little trouble going thru thick grass...overall very pleased with unit...

2
240715646
golf course greens

I enjoy cutting my lawn and my neighbors compllment on nice my lawn looks

2
240481708
Dependable and zero fuss to crank and operate

Have owned Greenworks brand for 7yrs now and not one hiccup or issue. Love this mower bc there is no cranking/pulling tuneups or gas maintenance needed. Just push a button and it fires up every time. Lightweight. Easy to push. I’m a petite female and it’s perfect for me

2
240469599
Super smooth & easy to push.

I was mowing with a 1970’s electric mower that finally lost a rusted wheel so had to have electric replacement. I knew would be hard to replace a 50 year old running one! But I was really pleased with this Green Works mower. It does a great job & very easy to push & operate. Very happy with this purchase.

2
240336902
Love it especially for the price. It was on sale and extra discount too!

Love the ease of use and great cut in my tiny patch of grass!

2
240262929
Excellent

Performs as expected ... A great machine!!

2
240166940
Great Lawnmower

Good power. Runs great.

2
240137252
Corded 21 electric mower

It’s easy to use. I have a large sloped yard so the electric mower is perfect to complete the job. Once you establish a pattern with the cord it’s a breeze.

2
240129308
Horrible customer service

They sell the same mower on Amazon for less and will not price match their own Amazon store. Before you buy try to call customer service and see how long you wait (I gave up after 45 minutes). Check out the feedback on trustpilot. Too bad because we need more electric mowers by reputable companies.

2
239890775
great mower

works great

2
239757129
Green planet

Yes it was a good investment and yes I'm happy with the lawn mower

2
239285773
Works fine

I have only used it once worked fine. Handled thick grass well. Using a cord takes a little getting used to. I'm happy I made this purchase.

2
239015762
Good mower

This Is my 2nd electric mower. It works great.

2
238411731
Great mower! Fast replacement part service.

I’ve had excellent performance from this mower for three years of hard mowing in thigh grass. It has plenty of power for an electric mower. It’s light and easy to handle. The height adjustment is the easiest I’ve ever had. In the spring of the 4th mowing season the control switch failed. I got a replacement within 3 days- it comes with the whole upper handle assembly. Pretty easy to install after removing the motor cover. I would buy this mower again without a doubt and I highly recommend it.

2
235858254
Love love love it!

I like mowing grass and wanted a push mower but as I've gotten older the pull cord mowers were getting harder to pull and then there was the oil mix or whatever to make it run. The electric mowers were annoying with the cord always in the way.But with the battery operated self propelled mowing grass is awesome. I have the choice to mulch or bag clippings and use them in other areas of the yard.Best investment I've made!Love greenworks battery operated tools. Makes life much easier

2
234771116
lawnmower battery

batter charger does not function properly all the time

2
233215196
13 Amp Corded 21 Mower After 2 Months

I've used the 13 Amp corded 21 mower about four times and it has worked well & as advertised for my small (less than .25 acre) yard. Easy to use out of the packaging. Wasn't packaged too well - it came with small scratches on the mower & handles - but this didn't affect performance and is probably minor compared to what it will see over the life of the mower. Pretty easy to maneuver around the yard though slightly heavier than expected & preferred. May have gone with a lighter/smaller unit given my small yard if I had to order again but overall satisfied with the purchase.

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