80V 21" Cordless Battery 4-in-1 Self-Propelled Lawn Mower w/ 4.0Ah, 2.0Ah Battery & Rapid Charger

80V 21" Cordless Battery 4-in-1 Self-Propelled Lawn Mower w/ 4.0Ah, 2.0Ah Battery & Rapid Charger

SKU 2544502 | MODEL# LMB455

$ 999 .99

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Acreage: up to 3/4 Acre
Runtime: 60 min. (w/ included batteries)
Battery Recharge Time: 60 min. (4Ah) 30 min. (2Ah) w/ included charger
4-in-1 System: Mulch, Bag, Side Discharge, Turbo Leaf Pickup
High-intensity LED Headlights: Optimal visibility and safety during your mowing
EZ Fold™ Handles: Simple to use - taking up to 70% less space
Warranty: 4-year tool and battery limited warranty
Power 75+ Tools with any Greenworks 80V Battery
What's Included: One (1) 4Ah & (1) 2Ah 80V Battery & 4A Rapid Charger
Dual Battery Ports: Extend your runtime by adding a second battery

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80V 21" Cordless Battery 4-in-1 Self-Propelled Lawn Mower w/ 4.0Ah, 2.0Ah Battery & Rapid Charger

$ 999 .99

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Specifications & Guides Find specifications as well as additional supporting information about our product

Product Specifications

Product Warranty	4 years
Battery Warranty	4 years
Product Weight	65 lbs
Front Wheel Size	8"
Rear Wheel Size	10"
Height Adjustment	7
Min. Cut Height	1-3/8"
Max Cut Height	4"

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Additional Details More information about this product

2x more torque takes the work out of yard work

Powerfully smart. Tackle the toughest yards, one-handed, because our smart mowers never bog down. When grass gets thick, tall, or wet, Greenworks sensors tell our brushless motor to rush power to the mower blades. The end result? The perfect lawn, every time.

Powerfully tough. The deck is forged with heavy-duty steel, ready to tackle any terrain. Add in algorithms and a brushless motor to reach unrivaled blade speed. Ka-pow!

Powerfully easy. Simple to start with just the push of a button. Effortless to mow because it's self-propelled, no sweat! Gentle on the ears because it mows quietly. A cinch to store in small spaces, you can even hang it up if you want to.

Additional features include a 4-in-1 cutting deck lets you choose your cut finish from mulching, bagging, side discharge, or turbo mode for leaf pick up

Zero gas smell. Zero pull cords. Zero maintenance. Zero pollution breathed. Zero time wasted.

Key features

21" Deck Size - Durable steel that plows through the tallest grass
Push Button Start - Press and mow, no more cord yanking
Intelligent Brushless Motor Technology - 2x more torque, more power, longer runtimes, quiet operation, and extended motor life
SmartCut™ Technology - Senses grass and auto-adapts power for the perfect cut
Dual battery ports with Auto Switch™ technology - when one battery depletes, the mower's power supply is automatically switched to the second battery
EZ Fold™ handles are simple to use - Just pull, fold, and store in seconds - taking up to 70% less space
4-in-1 cutting deck lets you choose your cut finish from mulching, bagging, side discharge, or turbo mode for leaf pick up
Single lever 7-position height adjustment offers a range of cutting heights to meet your specific needs
Maneuver terrain easily with 10" rear wheels and 8" front wheels
Battery Powers 75+ 80V Products - One battery to mow, blow, cut, trim, cultivate, and more!

The No List

No Gas Smell.

No Emissions.

No Maintenance.

Low Noise.

What's Included Everything that comes with this product

(1) Pro 80V 21" Self-Propelled Lawn Mower
(1) 4.0 Ah and 2.0Ah Battery
(1) Battery Charger
(1) High Lift Blade
(1) Grass Collection Bag
(1) Owner's Manual

Help & FAQ Answers to the most frequently asked questions

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. If you have a battery-operated tool, batteries and chargers should be stored indoors. Please refer to your manual for more guidance on mower/battery maintenance and storage.

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 pine cones, 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 it 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.

About Greenworks See how Greenworks is always making life better

20+ Years of Battery-First Innovation.

We’ve been pioneers of battery-powered outdoor tools since 2002, designing smarter tools with battery technology at their core to get work done faster.

#1 Battery Brand for Commercial Landscapers.

Trusted by professionals worldwide for performance, durability, and reliability, our tools are built to handle real-world all-day work.

Power That Replaces Gas Without the Hassle.

Sustainable technology delivers more power, longer runtimes, and zero gas, fumes, or engine maintenance, saving you time, money, and trouble.

One Battery. Endless Possibilities.

Choose the right voltage platform for your needs and share batteries across hundreds of tools in the yard, garage, jobsite, and beyond.

Smartly Designed. Built to Last.

Designed and engineered in-house for cleaner, quieter, smarter performance, with purpose-driven features that fit seamlessly into everyday life.

Proven Across 500+ Tools and Applications.

From maintaining your backyard to powering large jobsites, our battery expertise scales across 500+ professional and consumer tools built for real-world use.

Specifications & Guides

Key specifications not available.