Model#: GWKN20312

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Greenworks 20312 40V G-MAX Cordless Lithium-Ion DigiPro Brushless 16 in. Chainsaw Kit

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Product Overview


Important Notice: Lithium-Ion Item - Express Delivery option not available due to transportation regulations.Become more efficient when working in your yard with the Greenworks 40V G-Max Lithium-Ion DigiPro Lawn Tool Series, the gas alternative solution you have been waiting on. The DigiPro has a brushless motor for more torque and superior cutting performance and also has an interchangeable battery platform that offer all the tools you need to complete your yard work without sacrificing performance or power.Greenworks 40V G-Max Cordless Lithium-Ion 16 in. DigiPro Chainsaw delivers the power and high performance you need to get your trimming done without the hassle of extension cords or heavy gas powered motors. Featuring a 16 in. steel bar and chain, automatic oiler, tool-less chain tensioning adjustment and a wrap around handle, this chainsaw was designed to make cutting a simple task. The translucent oil tank makes it easy to have a clear view of oil capacity to ensure the highest performance and durability. Whether it is pruning tree limbs or cutting down logs for your fireplace, this is the perfect chainsaw to have around the house to take care of all your trimming needs. Well balanced, clean and easy to transport, this Lithium-Ion battery chainsaw with the brushless motor is a great step forward as an alternative to gas powered chainsaws. The large hand guard protection and safety switch button offers an enhanced precaution feature for any accidental start ups and the electric start feature makes it easy-to-use without the hard-to-manage gas pull start.
  • Brushless Motor delivers up to 30% more torque for superior cutting performance.
  • High performance 40V G-Max Lithium-Ion battery delivers fade-free power with no memory loss after charging.
  • Robust 16 in. steel chain and bar with tool-less chain tensioning offers ease of use while delivering the highest cutting performance.
  • Rear handle design provides excellent control, especially during overhead use.
  • 3/8 in. chain pitch delivers the right amount of capabilities to get those limbs trimmed and cut with minimal kickback.
  • Over-molded handle for increased user comfort.
  • Powerful enough to cut up to a cord of wood on a single charge.
  • Note: 40V G-MAX and 40V Lithium-Ion Batteries are not cross compatible.
  • 40V G-Max Cordless Lithium-Ion DigiPro Brushless 16 in. Chainsaw Kit - 20312
  • 40V G-MAX 4.0 Ah Lithium-Ion Battery
  • Charger
  • 16 in. Bar and Chain
  • Scabbard
  • Travel Bag
  • Owner's Manual


Series: G-MAX
Cordless: Yes
Bar Length: 16 in.
Batteries Included: 1
Battery Amp Hours: 4.0 Ah
Battery Type: Li-Ion
Chain Gauge: 0.050 in.
Chain Pitch: 3/8 in.
Voltage: 40V



4.6 / 5.0
16 Reviews
5 Stars
4 Stars
3 Stars
2 Stars
1 Stars
Yes, I would recommend this to a friend (12)
No, I would not recommend this to a friend (1)
Lightweight (8)
Easy To Use (4)
Ergonomic Design (4)
Powerful (4)
Heavy (1)
Short Run Time (if applicable) (1)
Best Uses
Frequent Use (3)
Small Projects (3)
Heavy Duty Requirements (1)
Large Projects (1)
Yes, I would recommend this to a friend
great saw
what a great saw.. I have my doubts what about my first one.... but now I have thrillerI have my doubts what about my first 1 but now I have 3 of has a great deal power the 4 amp hour battery lasts about 30 to 40 minutes of cutting time... it does best in wood less than 12 is quiet, powerful, and very eas to use. .. with a 3 batteries you could cut a cord of wood easy... so quiet that you can cut wood early on a Sunday with your neighbor right next to your fence...impressive power and easily goes threw any kind of long as you keep it out of the dirt...every one needs a saw like this around the house and even the farm...with 3 batteries you can cut for over 2 hours... great for cutting camp wood and for cleaning up downed limbs without disturbing the neighborhood. ..well built well thought out...even the wife will enjoy using it ....
January 31, 2015
Yes, I would recommend this to a friend
Cutt'en lil hammerknocker
I've been cutting fire wood, and clearing my properties for years, and I've never had a chainsaw I enjoy using as much as this 40 volt rig.
No fuss, no muss, just pop the battery in, check the chain tension, and go. I've dropped 23" sweet gum tree's with it, and sectioned it for splitting.
The oil reservoir is easy to monitor, the tension doesn't need tools to set, and I have yet to have a problem with this saw. I'm very pleased.
October 21, 2015
No More Gas
I bought this early in the spring and I am completely satisfied. I have used it to cut down 12 inch willows and even took it to the stumps. I have used this saw enough times to have to sharpen the chain twice and I love it! The chain adjuster is toolless. Big plus. Sooooo quiet and no gas and oil. No more pulling and jerking. I bought an extra battery and between the two batteries it lasts more than long enough for me. The really cool thing is when you are cutting the fallen tree and you have to stop to move branches around just let off the trigger and restart by pulling trigger. NO MORE PULLING!!!!!
September 11, 2016
Originally posted at
Awesome lil machine!
If you are in doubt or stubborn to move on from 2 cycle gas to electric chainsaws, I can assure you, they're awesome. I've had my 40volt 16" blade Greenworks for 2 seasons now and have asked more from it that it was designed for. i have 2 batteries that typically last 45min-1hr ea.. They're quite, don't need premixed gas or sparkplugs, just bar/chain oil and a charge, plenty powerful!!! Highly recommend.......
September 20, 2016
Originally posted at
No, I would not recommend this to a friend
Far from perfect
The chain oil pump never worked and the factory said that it was back ordered, It wasn't the pump it was that the oil lines to and from the pump were reversed at the factory. After correcting this mistake the saw ran for about five minutes and died. I was considering buying another saw and using the original for parts but I changed my mind and ordered a different make by another manufacturer.
October 27, 2015
Describe Yourself:
Avid Do-it-Yourselfer
Yes, I would recommend this to a friend
Easy To Use
Ergonomic Design
Best Uses
Frequent Use
Heavy Duty Requirements
Large Projects
Very impressed overall!
Like the saw very much. Has good power and is quite quiet .
Would definitely recommend it to others.
April 2, 2018
1 month ago
Describe Yourself:
Avid Do-it-Yourselfer
Yes, I would recommend this to a friend
gmax 16inch chainsaw
out does the oregan saw hands down would recomend to everyone
April 26, 2014
Yes, I would recommend this to a friend
Great so far
Have only had a chance to use the saw once so far, but made about 30 cuts through around 6 inch diameter logs for firewood with ease and without exhausting the battery. Looks like a well made tool. Perhaps it's a little on the heavy side due to the large capacity battery, but certainly not unmanagable.
February 24, 2015
Yes, I would recommend this to a friend
Love this saw!!
I always had trouble keeping gas chain saws running. This is a great little saw for me. Just slip in the battery and go. I cut up a big pine tree that the power company cut down for me in just a little while. I am a 73 year old female living alone who likes to take care of things myself. So ladies if you need a good saw this is it. I also love the fact that you don't need tools for adjusting the chain.
May 14, 2015
Yes, I would recommend this to a friend
Love IT!!!
I am a 59 year old woman and my husband has a heart condition that prevents him from attending to the outside chores on 23 acres. I can use this chainsaw comfortably and safely. I cannot handle a gas chainsaw, so this 40V chainsaw was the obvious choice. It cut large fallen trees easily and did everything I needed it to do.
June 19, 2016

Questions & Answers

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Browse 14 questions Browse 14 questions and 14 answers
Will the same battery work with the 12 inch 40v chain saw and also the 40v hedge clipper?
Jim C on Jul 24, 2017
How do I get a replacement, saw chin, for Greenworks 20312 40V G-MAX 16 in. chain saw?
Terry M on May 29, 2017
BEST ANSWER: Please contact the manufacturer direct at 1-888-909-6757 for parts and accessories.
I can't get my battery to charge, so I can run my chain saw
Jean on May 20, 2016
BEST ANSWER: Please contact CPO customer care for more options. 866-577-0663
Weight of 12"chain saw?
A shopper on Mar 25, 2017
BEST ANSWER: 6.9 lbs is without batter. With battery it weighs 10.4 lbs with battery.
Will the chain oiler work in cold weather?
Fred on Apr 3, 2015
BEST ANSWER: A chain oiler will work in cold weather.
Is this a variable speed saw?
James S on Nov 4, 2017
BEST ANSWER: No, this saw does not offer variable speed.
weight of 16 in saw/?
A shopper on Sep 17, 2017
BEST ANSWER: This saw weighs 7 lbs.
How do I adjust the chain tension and how will I know if it is needed
slick on Jun 24, 2016
BEST ANSWER: There is a chain tension knob located on the side of the saw.
Would the charger for this chainsaw work in Europe where they have 220 V and 60Hz ?
moktar on Feb 14, 2016
BEST ANSWER: No, the Greenworks 20312 is part of the 110v system
Can I use a 12" or 14" bar on this unit?
JJ on Jun 7, 2015
BEST ANSWER: Only the 16" bar is recommended for this chainsaw.


Greenworks Warranty

Double The Industry Standard

NEW GreenWorks products are protected against all defects under normal use for a period of (4) four years (90 days for commercial use) from the shipping date.

Reconditioned GreenWorks products are protected against all defects under normal use for a period of 30 Days from the shipping date.

GreenWorks can opt to repair, replace or issue a refund for products that are determined to be defective, or that have been damaged during shipping. Replacement of products or parts subject to normal wear and tear is the responsibility of the customer. If GreenWorks accepts a return under Warranty, you can return the defective or damaged product only after you call and receive a Return Authorization from GreenWorks. You also will receive a refund for your original shipping charges, and GreenWorks will arrange and pay for your return shipping charges. Batteries carry a one-year warranty against defects in workmanship and materials. Batteries must be charged in accordance with the operator's manuals directions and regulations in order to be valid.