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​Greenworks 20312 40V Cordless Chainsaw Review

My Rating:​​​​​

In general, professional landscapers tend not to give much credence to cordless chainsaws; however, from the first day of its release, the Greenworks 20312 40V Cordless Chainsaw has been raising more than a few eyebrows.

The design of this Greenworks model makes it ideal for overhead work, and when the trigger is released the operation and noise of the engine ceases immediately.

The powerful brushless motor and the manufacturer’s 4-year warranty add to its overall attractiveness.

If you are skeptical about the capabilities of cordless chainsaws, this is the model that just might change your mind.


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    The brushless motor offers more torque, power, and less vibration than other comparable models.
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    Additional features, like the chain break and the low kickback chain, increase the overall safety of the user.
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    When fully charged, the 4 Ah 40V battery is capable of performing 150 cuts before it needs recharging.


  • The slim design of the chain bar causes it to flex and bend when being used on thicker woods.
  • The oil port and groove are on the smaller side and have a tendency towards clogging.


  • The Greenworks-made brushless motor extends the lifespan of the tool by reducing overall wear and tear.
  • This chainsaw battery is compatible with other tools in the Greenworks 40V line.
  • The electronic chain break is designed to prevent accidental kickbacks.
  • Chain tensioning is automatic.
  • The push to start feature makes it incredibly simple to start this chainsaw.


Out of the box, the Greenworks 20312 Chainsaw is ready to use.

It comes with a 40V 16” battery and included charger. This model can be purchased with or without the battery as well.

Also included in a purchase of this chainsaw is a scabbard and travel bag for storage and transportation. Once assembled, the chainsaw weighs in at just over 10 pounds – making it easily maneuverable for most people.

Brushless Motor

One of the primary selling features of the Greenworks 20312 is the fact that its design incorporates a brushless motor.

The design of its electronic components ensures that the engine does not lose efficiency because of the brushes come into contact with the rotation portions of the motor. As a result, brushless motors run significantly cooler than traditional gas-powered models. Their engines tend to be quieter and produce less vibration for the user.  

Because no brushes are included in the design, the motor has a longer lifespan, and it requires virtually little to no maintenance over the lifetimes of the chainsaw. This is a significant step forward in the current technology for cordless tools.

Chain Bar

Another highlight of the 20312 is the fact that its design incorporates an Oregon-branded, 16-inch steel bar and chain. By comparison, the majority of other cordless chainsaws have only a 14” bar. The 16" bar is generously sized, but not so large that it cannot be comfortably used.

Safety Features

What users tend to appreciate about this particular chainsaw is the fact that it features an abundance of safety features.

There are standard safety features, like hand guards and chain brakes, but a particular standout is the fact that when the trigger is released, the engine automatically cuts off and all noise ceases. Furthermore, the chainsaw automatically shuts itself off after 60 seconds of inactivity to prevent discharging of the battery.

Chain Oiling & Tensioning

As one would expect, oiling of the saw’s blade is automatic. The chain oil reservoir is located on the left side of the chainsaw. The reservoir cap is tethered, so users don’t have to worry about losing it.

Chain removal and tensioning are performed by two simple to use dials located on the right hand of the machine. Overall, the chain seems to hold its tension well; however, some users have complained that the small size of the oil reservoir makes it clog rather easily.

The Greenworks 20312, and all of its included components are covered by a 4 year, limited warranty from the manufacturer. If the chainsaw is to be used for commercial purposes, the warranty only lasts for 90 days.

Greenworks 16-Inch 40V Cordless Chainsaw, 4.0 AH Battery Included 20312
1,022 Reviews
Greenworks 16-Inch 40V Cordless Chainsaw, 4.0 AH Battery Included 20312
  • Our GREENWORKS brushless motor provides your GREENWORKS tool with longer run-time, more torque and...
  • Compatible with GreenWorks G-MAX 40V Li-Ion System offering a range of tools to choose from
  • Brushless motor delivers up to 30% more torque for the greatest cutting performance; Oil Tank :...
  • Brushless motor design offers up to 70% less vibration for user comfort while working. One battery...


A user does not have to be an experienced landscaper to learn how to use the Greenworks 20312 16" 40V Cordless Chainsaw.

The only element that will require some acclimation to use is the fact that the electronics system is handle mounted.

On a full charge, this chainsaw provides approximately 150 cuts on small to medium sized pieces of wood.

For all the features and performance it has to offer, this Greenworks chainsaw is reasonably priced, and it would make an excellent addition to any buyer’s lawn care arsenal!

About the author

    Matt Hagens

    Hi, I'm Matt the owner of Yard Care Gurus. I love to be outside working on my lawn, planning my next project. I created this website to help people like you find the best products for yard care and great advice. Thanks for stopping by!

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