Earthwise 50520 Review – 20-Inch 12-Amp Corded Electric Lawn Mower

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Earthwise 50520 Review
Earthwise 50520
Performance/Cut Quality
What I Like
7-level deck height.
Large 9.5 inch rear wheels.
Mulching feature.
Side-discharge chute.
Safe, push-button start.
What I Don't Like
A little heavy.
An all-mesh grass box is prone to damage.
My Overall Rating

Earthwise 50520 Review


The Earthwise 50520 20-Inch corded lawn mower has a 20” deck that is suitable for small to medium-sized lawns around 1/8 Acre and has the ability to bag, mulch and side discharge the cuttings. The mower has a 12-amp electric motor and 4 cutting heights from 1.75 inch to 4 inch and it includes safety features to prevent accidental starting. This is a relatively light-weight model at just 50 lbs that will fold down into a small and compact package for easy storage.

This mower from Earthwise has something for everyone. The 50520 has a wide deck, powerful motor, and several methods of dealing with cut grass. This is a well-made machine that is quiet, safe, and easy to use. In this Earthwise 50520 Review you will learn all of its features and functions and by the end of the review know if this is the right mower for you and your garden.

Key Features

  • Rating: 9.8/10
  • Lawn Size: Small to Medium
  • Power: 12-Amp Motor
  • Deck Size: 20 Inch
  • Number of cutting heights: 7 (1 1/2 in to 4 in)
  • Weight: 50 Pounds

Deck Size

The deck on this Earthwise 50520 20-Inch corded lawn mower is steel, which gives a safe and solid base for the blade and motor to rest on. And the shape of the deck is low at the front, which makes it easier to see how close the machine is to the edge of a path.

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A 12-amp motor powers the blade — this is a push mower, so it has one job to do, cut the grass quickly and efficiently. The 12-amps is a powerful motor to spin its large blade, and will have no trouble cutting tall or thick grass. But being electric, you know that you are not going to have any trouble starting it.


The blade is solid-steel and 20 inches in width. This is a substantial size of blade to use on a medium-sized garden. The blade lifts the grass to make consistent cuts with each rotation.

Earthwise 50520

Height Adjustment

There are 7-levels of height to choose from on this Earthwise 50520 20-Inch corded lawn mower. The lever is set on the right-rear wheel and controls all four wheels so that the deck height stays level to the grass. Earthwise has used a steel lever with an ergonomic handle. Choices of height range from 1.75 inches and go up to 4 inches.

Roller (Stripes)

This model does not have a roller, but it does have a form of striper. There is a weighted bar that drags from under the grass box, to pull the grass in the direction of travel. And the bar is set in a way that will not get in the way of the rear wheels or the deck when reversing.

Grass Box

This unit comes with a good quality full mesh grass box. A steel skeleton frame supports the shape of the box and helps to keep the weight down. The mesh also makes it easier to see the level of grass collected and when it needs to be emptied.


If you do not want to collect the grass — one of the functions of the blade is mulching. The mulching plug comes with this mower and will chop the clippings into fine pieces and spread them over the lawn on the journey. The mower can also discharge the cut grass through a side chute, onto the lawn, for later collection.

To learn more about the benefits of mulch the lawn, please my article “The Benefits of Mulching Lawn Mowers”

Earthwise 50520 Safety


Safety Features

The operator must press a power button on the main control box before they can pull on the throttle lever to activate the motor. And if the blade hits something solid, the motor will shut off to prevent overheating and any damage to the motor.

Design and Build Quality

A robust steel deck gives this machine the appearance of something that will last and this is definitely the case with this Earthwise 50520 20-Inch corded lawn mower. The handlebar has a soft foam covering to absorb some of the vibrations that would pass into the operators’ wrists. This is a heavier mower at 50 pounds due to all the cutting features and steel deck, so wherever it gets stored — it is going to be on the ground.


The motor is a decent size, but it would be better to have a couple of amps more considering the size of the blade. There is a compromise of having less power to cut through a lot of grass, and a longer blade that can cut more grass at the same time.

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Earthwise 50520 Operators Manual

Click Here to download the Earthwise 50520 Operators Manual

Pros and Cons

  • 7-level deck height.
  • Large 9.5 inch rear wheels.
  • Steel deck.
  • 3-in-1 options.
  • Mulching feature.
  • Side-discharge chute.
  • Foam covered handrail.
  • Safe, push-button start.
  • Striper bar on the rear.
  • A little heavy.
  • An all-mesh grass box is prone to damage.


Should You Buy This Earthwise 50520 Lawn Mower?

Earthwise 50520 Conclusion

This corded lawn mower ticks all the boxes for ability and deck size. The machine offers 3 ways to dispose of the grass, a range of cutting heights, and a solid steel deck for safety. Large wheels at the rear give the machine stability, and a single lever to control them is a safe method.

The big issue with all these functions is the weight. So, if you can afford the space in your garage to have it sit on the floor, then this mower is a good fit. If you want a machine you can store on the top shelf during the winter months, then look to a model with a plastic deck.

The Earthwise 50520 20-Inch 12-Amp Corded Electric Lawn Mower is ideal for those that:

  • People with a small to medium sized yard (4,500 square feet or less).
  • Those that require a large 20” cutting width.
  • People that like the option to mulch the grass cuttings.
  • People that like the option to side discharge the grass cuttings.
  • Those looking for a quieter option to a gas mower.
  • Those that require a powerful 12 amp motor for longer/thicker lawns.
  • People who require a wide range of cutting heights.
  • People that require a mower that folds down for easy storage.
  • Those looking for an easy to operate electric corded mower.

Where Should I Purchase this Model?

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Earthwise Power Tools by ALM 50520 12-Amp Electric Lawn Mower, 20-Inch Corded
  • Powerful 12-Amp motor provides the power to cut all types of grasses; High efficiency motor for gas-like power; No gas, no oil, no fumes
  • Large 20" cutting width with single lever easy-change cutting height adjustment from 1.75"-4"; Large 9.5" rear & 7" front wheels for easy maneuvering
  • 3-in-1, easy on/off side discharge, rear bag, and mulching system; Adjustable comfort 'V' handle for easy of use
  • Compact and slim frame with folding handles for easy storage; Cord retention hook keeps cord secure while in use
  • Lightweight and easy to operate
  • 3-in-1 easy on/off side discharge / mulch / rear bag

Last update on 2024-03-29 / Affiliate links / Images from Amazon Product Advertising API


What sized deck does this Earthwise 50520 have?

20 inch

What are the size of the wheels on the Earthwise 50520?

Rear: 9.5 inch - Front: 7 inch

What cutting options does the Earthwise 50520 have?

Side discharge, rear bag and mulching system

What are the height adjustments on the Earthwise 50520?

1.75 inch to 4 inch

Not sure about this mower? Click here to see more Corded Electric Lawn Mower Reviews. Protection Status

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