Greenworks Cordless Lawn Mower Review

The Greenworks Twin Force G-Max battery operated lawn mower is a decent cordless mower with a considerable range of useful features. In this post, we will review some of the most important characteristics of this Greenworks cordless lawn mower so that you can make a more informed decision before buying your next mower. We will go over the key points including overall design, how long the battery lasts, special features, and anything else that you need to know.


Deck Size (inches)


Battery (Volt)


  • Powerful without being too heavy to push around or maneuver across the lawn
  • Cuts consistently and effectively across different kinds and levels of grass
  • Cordless design eliminates the possibility of wiring getting caught on obstacles or reducing your range
  • Automatically adjusts the power draw of the engine according to how much energy it needs to cut the grass


  • The second battery doesn’t add that much more battery life compared to the first one
  • Green color can make it hard to see grass stains and clippings on the body

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Key Features

This eco-conscious device incorporates brushless motor technology, offering increased torque, quieter performance, and extended longevity.

The cutting deck for this electric lawnmower is 20 inches in diameter. That is large enough to handle a typical lawn with ease. The Smart Cut technology will adjust the power consumption of the engine based on how thick your grass is.

This lets you make the most of your battery power, helping the electric mower be as efficient as possible.

The Greenworks Twin Force mower uses two sets of blades as well as two batteries. The cross-cutting blades allow for better coverage and more consistent cuts.

Greenworks Twin Force Dual Blades
Greenworks Twin Force comes with dual blades

Greenworks offers smaller cordless electric mowers (bit without the dual blade technology):

The front wheels have a 7-inch diameter and the rear wheels are 10 inches in diameter. This configuration makes turns and corners easier to manage.

The mower’s cutting height can be adjusted in 5 positions between 1 1/4 inches and 3 5/8 inches.


This Greenworks cordless lawn mower is light for its size and the wheels make it easy to push, even in long or wet grass.

Greenworks 20-Inch Cordless Lawn Mower - Grass

The angle of the handle provides enough distance between you and the cutting deck without making the mower feel heavy.

This manually-propelled lawn mower has a clean, smooth design that is easy to keep clean and wash in case any grass clippings or mud gets onto the body of the mower, although difficult to see on the green plastic.

You can shift the angle of the handle up to get more pushing force or to make the mower easier to store in a shed.

The soft rubber tubing is easy to grip as well as gentle on the hands, reducing the chance of getting callous.

The large 7 and 10-inch wheels won’t get stuck in wet ground and won’t break or pop if they roll over something sharp in the grass.

Battery and Uptime

The Twin Force comes with two different batteries, a 4 Ah and a 2 Ah one, as well as a dual port charger that charges both of them.

Part of the Greenworks G-Max system, the batteries can be used in other Greenworks G-Max tools, being leaf blowers, chainsaws, or any other supported power tool in the range. This makes owning a variety of Greenworks products very budget friendly, as more often than not, the battery is one of the most expensive parts of these power tools.

Greenworks G-Max battery system
Greenworks G-Max battery system is interchangeable in their 40V range.

The two batteries give you more life, and the cordless mower will automatically switch over to the second battery when the first one runs out.

The pair of batteries in the Twin Force 20-inch model will give you a run time of approximately 70 minutes. If you have thicker or very tall grass, or if your lawn is uneven, then you might get less time than that.

Mowing more often will keep the grass short and power consumption low during mowing. Both batteries are modern lithium-ion ones.

The battery level gauge on the handle is highly advantageous. It clearly shows which battery pack is currently powering the mower and provides real-time information on the remaining power in each battery. This innovation is a significant upgrade from the previous method of bending over, opening the battery compartment, and pressing the button on the battery to check the power status.

If you choose to get a smaller model, such as the one with the 16-inch cutting deck, then you will only get one battery and will subsequently have less battery life.

The smaller engine will use less power, but overall having two batteries outweighs this and gives the larger model more uptime.

Warranty and Support

This product has a limited 4-year warranty for the mower and a 2-year warranty for the batteries. It’s a solid indication of great quality.


The Twin Force Greenworks cordless lawn mower does its basic tasks quieter than a gas mower, but it’s the Smart Cut tech that really helps it stand out. 

It’s clear that Greenworks has put a lot of thought into resolving the biggest problem with cordless push mowers, which is the battery life. Between the backup battery and the adaptation to the grass’s thickness, these little touches add up to a lot less time waiting around for a charge. The battery life should be more than enough to finish an ordinary lawn. 

The G-Max battery system is also a great option if you own multiple Greenworks products.

Aside from this, the rest of the basic characteristics are competitive with other cordless battery powered mowers. 

The Greenworks cordless lawn mower product line has a few other options, but this one is the first one that is large enough to mount both batteries. Smaller versions do still have the Smart Cut feature, though, and their smaller cutting deck means they don’t need as much power in the first place. 

The best choice for you will depend on how large your lawn is, its shape, and how long it will take for you to mow the whole thing.

In our recent roundup reviews of cordless lawn mowers, the Greenworks 25302 battery powered mower performed rather well, check it out to read more about its competition.

Looking for a lawn mower without the limitation of battery run-time? Check out our electric lawn mower reviews where we investigated a number of top of the line corded mowers with alternative power sources.