80V 18" Brushless Chainsaw, 2.0Ah Battery and Charger Included

SKU: 2017702  |  Model # CSB403
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Key Features

  • Automatic Oiler - Ensures durability and extends the life of the chain.
  • Lightweight
  • Push Button Start
  • Steel Bucking Spikes
  • Electronic Chain Brake
  • Translucent Oil Tank
  • Brushless Motor
  • Quiet Operation

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Compatible With :

Description

Landscaping has never been easier with Greenworks Pro 80V System. The most powerful cordless battery platform in outdoor power equipment, you can now breeze through homes, corporate parks and entertainment venues with zero gas, zero emission and zero maintenance. Go from zero to power with a push of a button and get you through the task at hand with less vibration, less noise and less mess. With additional batteries, a rapid charger for quick charge time and a multiple tool compatibility platform, you can get all your landscaping done with all the power and performance of gas while at a lower cost of operation.

Specifications

  • Voltage
    80V
  • Weight
    12.5 lbs.
  • Assembled Product Dimensions
    52.7" × 8.4" × 9.0"
  • Package Dimensions
    35.8" × 9.0" × 9.8"
  • Package Weight
    22.4 lbs. (10.2 kg)
  • Battery Ampere-Hours
    2.0 Ah
  • Battery Indicator
    Power Display on Battery
  • Cuts per Charge (4x4 Lumber)
    Up to 80 Cuts
  • Charger Included
    Rapid 5A Single Port Charger
  • Charge Time for 2.0 Ah Battery
    Up to 30 Minutes
  • Motor
    Brushless
  • Rated Power of Motor
    2.0 kW
  • Active Chain Brake?
    Yes
  • Bar/Chain Length
    18"
  • Chain Size
    3/8" Pitch, .050" Gauge, 62 Drive Links
  • Tenison System?
    Tooled
  • Bar Nut Size
    M8 Standard Thread
  • Blade Speed
    20 Meters per second
  • Chain Oiler
    Automatic
  • Oil Type
    Standard Bar and Chain Oil
  • Oil Tank Capacity
    200 ml
  • Estimated Assembly Time
    ≈5 minutes
  • Warranty
    4-Year Warranty
  • 80V Single Port 4Amp Rapid Charger - GCH8040
  • Voltage
    80V
  • Weight
    3 lbs.
  • Size
    7.7" × 9.3" × 5.1"
  • Charge Time to 100%
    from 30 mins
  • Max Output
    4 AH
  • Wall Mount Option
    Yes
  • Diagnostic LED indicator
    Yes
  • Warranty
    4-Year Warranty
  • 80V 2.0Ah Lithium-ion Battery - GBA80200
  • Voltage
    80V
  • Amp Hours
    2Ah
  • Weight
    3.48 lbs.
  • Size
    3.5" × 5.7" × 7.7"
  • Watt Hours
    144
  • Charge Time to 100%
    from 30 mins
  • Battery Capacity Indicator Lights
    Yes
  • Warranty
    4-Year Warranty

Manuals

FAQs

What oil do I use with my chainsaw?
Our units use a standard bar and chain oil. You can purchase this from your local hardware store; no specific brand name is required
Why is my chainsaw leaking oil?
All chainsaws will slowly “leak” oil in storage (mostly from it seeping off the chain). To prevent excessive leakage, store with as little oil left in the reservoir as possible, lay the chainsaw flat with a rag beneath it and the pole saw upright with the motor head at the top. During first use, operators should only fill the reservoir to roughly half full and check periodically to see if it needs to be refilled. Eventually, you will become accustomed to the amount of oil required for each job. This procedure will make it easier to store the unit as oil free as possible and reduce oil run off.
How large of a branch/log can I cut?
If you are looking to cut logs with one pass, the log needs to be about 2" smaller than the bar. However, there are many techniques to use a chainsaw for larger cuts.
What is the run time?
The run time of a chainsaw is measured in cuts per charge. The number of cuts per charge or “run time” that you receive would depend on the load acting on the saw (i.e., the thickness and type of wood being cut) as the chainsaw would use more battery power on tougher and thick objects being cut.
How do I know if my chain is tensioned enough?
Chains should be tensioned before use. Check intermittently throughout each chore to make sure the chain is kept properly tensioned. A correctly tensioned chain should only pull away from the bar enough to fit a dime between the teeth and the bar. ***DO NOT TENSION A CHAIN AFTER YOU HAVE FINSHED USING THE TOOL. HOT METAL EXPANDS. IF THE CHAIN NEEDS TENSIONED WHEN HOT, THEN ALLOW TO COOL, THE CONTRACTING METAL COULD POTENTIALLY DAMAGE THE CHAIN, THE BAR AND EVEN THE UNIT. WAIT UNTIL THE NEXT USE (OR AT LEAST UNTIL COOLED) BEFORE TENSIONING***
Can I use another brand of chain?
Yes, however, it must match the specifications of the original chain (gauge, pitch, and drive links). These specifications my be found inside of your owner’s manual.
What file size do I use to sharpen the chain?
Our chains may be sharpened using a 5/32” round file.
Why isn’t my chain cutting?
If the wood is burning/smoking, this indicates that the chain is on backwards. Another reason could be that the chain is dull and needs to be sharpened or replaced. Replace the chain if: • The length of the cutting edges is less than 5 mm. • There is too much space between the drive links and the rivets. • The cut speed is slow • Sharpening the chain many times but it does not increase the cutting speed.
Why does my chain keep falling off?
Chainsaw chains can come off due to multiple reasons such as worn-down bars, worn-down sprockets, and wrongly set chain tension. Please check the chain tension and condition of all parts prior to using. If anything is worn or damaged, replace parts before using again. Replace the bar if: • the groove is not fit with the height of the drive links (which must never touch the bottom). • the inside of the guide bar is worn and make the chain lean to one side.
How should I store and care for my Greenworks battery to ensure the best performance and longest lifespan?
We want you to get the most out of your tools, and that starts with understanding how to care for your battery. Proper storage and handling not only extend battery life but also ensure your tools are ready to perform when you need them most. A Quick Note on Lithium-Ion Battery Performance All Greenworks batteries use lithium-ion technology, which offers powerful, consistent performance without the memory effect found in older battery types. However, lithium-ion batteries are sensitive to temperature extremes—both heat and cold can affect performance and longevity. That’s why proper storage and care are essential for keeping your battery in peak condition. Best Practices for Battery Storage and Use: Store batteries indoors in a cool, dry location—away from direct sunlight, humidity, or extreme temperatures. This protects internal components and preserves performance. Only connect the battery to the charger when actively charging. When not in use, unplug the charger and keep the battery disconnected. If storing for an extended period, charge the battery fully before putting it away. Check the charge every couple of months. If it drops, recharge it before returning it to storage. This helps maintain battery health over time. Allow the battery to reach a safe operating temperature before use. For snow throwers and cold-weather operation, cold batteries may not power on. Let the battery warm to room temperature indoors before inserting it into the tool. Kindly note: Once the battery is at room temperature and installed, the current generated while the tool is running will help keep the battery warm. As long as the battery starts at room temperature, you should not experience issues even when working in cold outdoor conditions. For other tools/hot weather operation, if the battery has become hot from use or charging, allow it to cool before reinstalling. Indoor storage helps avoid performance issues related to both hot and cold environments and keeps your battery protected year-round.
Can I leave my battery in the charger after charging it?
The battery chargers do have auto cut offs to prevent it from over charging. However, we do advise customers to remove the battery from the charger after it has been fully charged and to also unplug the charger from the outlet, as this is good electrical safety practice to do so. This will also help to prevent false defect readings and allows the charger to reset itself each time it’s used to charge a battery.
Why do batteries cost so much more than the tool?
The battery is the most important component for a battery-operated unit. Please be assured we price our batteries with the cost of material, manufacturing, and current market pricing in mind. Batteries are the costliest items to manufacture and ship in any kit. Full kits including a tool, battery, and charger are priced affordably so that consumers can begin building that line of tools and move forward purchasing tool-only units. When you purchase batteries on their own, it is more notable the cost that they carry.
How do I store the battery? Can I leave the battery in the garage or shed?
When the battery is not in use, we suggest storing it indoors, in a cool dry area - away from direct sunlight. Leave the charger unplugged and the battery disconnected from the charger unless it needs charging. It is recommended to store the battery with a full charge, and if it is being stored for a period where no use is expected, to check on the charge every couple of months. If you notice the charge has dropped, we advise charging the battery back up to full before returning it to its safe storage place. Following these steps will ensure you receive the most out of the battery life.
My battery is stuck in my tool. How do I get it out?
60V/ 80V Products: To remove the battery, push and hold the battery release button. Then, pull the battery pack straight out. In some cases, if the springs underneath have gotten locked down you might have to give a small push to the top of the battery to re-engage them to help the battery pop up. The battery pack fits snugly into the product to prevent accidental dislodging while in use; it may require a strong pull to remove. Before use, be sure that the rails on the battery and product are free of debris that could cause the battery to get stuck. 24V/ 40V Products: To remove the battery, press the latch button on the battery pack down and hold. Pull the battery pack out of the handle. The battery pack fits snugly into the product to prevent accidental dislodging while in use; it may require a strong pull to remove. Before use, be sure that the rails on the battery and product are free of debris that could cause the battery to get stuck.
How do I check the charge on my battery?
Press the battery capacity indicator (BCI) button located at the end of the battery. The lights will illuminate according to the battery capacity level. Please note this switch does require a firm direct push using the tip of your finger. If the button is not being fully engaged, the lights will not activate. Please also be advised the lights only stay on for a few seconds and will automatically turn off. Another reason the lights will not power on is if the battery is completely depleted of power and needs to be charged.
Can I use any Greenworks battery in any Greenworks tool?
Our batteries are interchangeable with tools that are of the same voltage platform only. The difference between batteries of the same voltage is the ampere-hour (Ah) rating. The higher the ampere-hour (Ah) rating on the battery is the more run time it has to offer.
Are there certain tools that can’t accept all same voltage batteries?
There are a few exceptions. • Our 80V 20” snow thrower models 2600402 / 2605202 / 2601302 manufactured prior to September of 2017 can only use 2.0Ah or 2.5Ah battery models. • Our 60V 8.0Ah battery model 2957102 cannot be used in the following tools due to the height: dual-port lawnmowers, pressure washers, or the wet/dry vacuum.
Do all batteries of the same voltage use the same charger?
Yes, they do. Each product line has designated charger models that can charge all batteries in that voltage platform, no matter the Ah rating.
The charger indicates that my battery is fully charged but I was just using it and it depleted. Why isn’t it charging?
Putting a battery that was just in use onto the charger often results in a false full charge signal. Remove the battery from the charger and allow it to rest in a room temperature area for approximately 10-15 minutes before charging.
My charger is flashing red when I engage my battery. Why is this happening?
When the battery is inserted into the charger and the status LED blinks red, remove the battery from the charger for 1 minute, then reinsert. If the status LED blinks green, then the battery is properly charging. If the status LED is still blinking red, remove the battery and unplug the charger for 1 minute. After 1 minute, plug in the charger and reinsert the battery. If the status LED blinks green, then the battery is properly charging. If the status LED is still blinking red, then this likely indicates an issue with the battery or charger and should be taken care of either with our warranty team or by means of replacement.
My charger has a solid red light on it when I engage my battery. What is happening?
This typically indicates that the battery is at the wrong temperature to be charged. Allow the battery and charger to rest indoors at room temperature until they are no longer hot/cold and attempt charging again.
Are your chargers made for 220V or 120V outlets?
Greenworks chargers sold in the USA and Canada are designed for use on 120V outlets only.
Looking for a compatible part/accessories for this unit?
You can find the related parts and accessories on our parts finder by clicking here.

Product Videos

This 80V 18" chainsaw delivers "as good as a gas saw" power in a quieter, cordless package. Customers praised its ability to cut through large trees (24"+ diameter) and convenience of push-button starting. Battery life varies: 25-45 minutes typical, with multiple batteries recommended for extended work. Common concerns include chain oiler leaks and limited battery runtime on demanding tasks.

Saw (positive)Chainsaw (positive)Trees (positive)Gas (positive)Quiet (positive)
  • 5 stars: 62 (83%)
  • 4 stars: 7 (9%)
  • 3 stars: 1 (1%)
  • 2 stars: 3 (4%)
  • 1 star: 2 (3%)
s
scott bleackley
80v Chainsaw, Minibike, Worklights

My Battery and Tool collection (May 2025) includes:
2x 2Ah Gen I 80v
1x 5Ah Gen I 80v
1x 2021102HD 18" Chainsaw
1x Stealth Minibike
2x LED work lights

The Chainsaw I have is an absolute beast. We use it camping way more than the gas saw. It's quiet. Sure it's power hungry, You're going to want two things: 2-3x 5Ah batteries and a chisel type chain.

Get the dual charger and 3 units if you plan to rock this thing for a work day, but otherwise, it will rock a work day! 18" Bar has been used to fell 24"(ish) trees with ease, see photo.

The oiler does leak, so I empty the saw after use. But my saw IS 3 years and dozens of cords of wood used. I use a couple sealed ammunition cans, one hold the spare batteries, the other holds the charger, tools, and chains.

The minibike is new to me, but I've got 35miles on it for it's first week of use. Left the car at work the day the bike crate showed up, and "commuted" to work on the local bike paths the rest of the week. I wish it had:
*a little more motor power, top speed, maybe a front motor? 20(E),30(N),40(S)mph speed settings would be superb.
*wish it had longer range. With the room available, no reason 4 batteries couldn't be used to power this unit. My single, 3 yearold, Gen I 5Ah gets me 4miles to a charge. I look forward to getting max batteries for this unit.
( I'm also 6'2" & 275lbs, so I most definitely overload the bike)
*0-33-66-100 throttle can catch people off guard, even in Eco mode. A more progressive throttle would be nice.
*I KNOW it's an offroad bike, but, signals and small mirrors would be super beneficial. I am adding some to my unit.

LOVE IT even with it's minor faults. It's a blast to ride, the onboard speakers are LOUD: Magic Carpet Ride on the first night ride home was fun. RevHeadz on my phone using the V-twin engine sounds riding to work the next morning was a HOOT! If I could only get the bikes throttle to sync with the phone somehow ;)

The worklights: I bought one, it worked awesome, unit it started eatting the battery and not turning on. I did my diag and Greenworks replaced my unit at no charge to me. New one has been awesome, they take a kicking. Both have the option of being run by a 110v cord, the broken unit still works in this manner, so I have 2 lights. :) They are bright... really bright... like, "don't look at them" bright.

Greenworks has been good to me, I look forward to buying more from them. I am an animal with saws, when this one inevitably dies, I WILL be buying their 20" 82v commercial saw. Used it at a trade show in Cornwall once and they set the hook in me deep. Beautiful unit.

Thank you Greenworks.
Stay safe out there everyone!

EDIT 2026, 300+ miles later:
The minibike operates much better with a pair of GenII 5Ah batteries, I have four now, two stay in the back pack. With my weight, size, and full pin driving style, I get about 1 mile per amp hour, flat plane. 10Ah = 10 miles = 16km. I can radius out 16km or straight line it out to 32km if I'm ever feeling frisky with all 4 batteries. Working on making a bracket/bucket/saddle bags of some nature to hold spare batteries and one of the single chargers. New aftermarket rear shocks and springs have been ordered. Going to take apart the seat pad and work some magic over the winter.

2
254171021
3 Greenworks Products

Last year I purchased a lawn mower. This year I bought a String Trimmer and a Leaf Blower all from Costco. They all seem to work well. I do wish the batteries would last longer..

2
254153288
Size weight power

As a builder/ contractor I look for the best cordless tools. I purchased theGreenworks 18 chainsaw for the size weight and 80v power. It came with a molded caseI keep it in the pu along with my other grab and go tools.

2
253873603
Great chain saw

Had this chainsaw for 3 years. I'm not a small engine mechanic and grew tired of fighting with gas engine tools. Bought this 80v Pro 18 saw and have used it all over my small farm. It's a work horse. Haven't had a job it couldn't handle.

2
253797771
18 Chainsaw 80V

I bought this product over a month ago. Light weight compared to gas chainsaws and impressed with the power this chainsaw has. Purchased a second battery so one can be charging while I’m cutting with the other. With cleanup and a second battery no issues with sitting and waiting. Chose the 18 vs 16 and happy that I did given the size of trees I need to cut up. Can always cut smaller but can’t go larger if you have a 16 chainsaw. Super quiet where I’m not upsetting neighbors!

2
251370221
Best tool I've owned till it wasn't

I bought this over 6 years ago and it has stopped working cold green works for support and was told that it is out a warranty. I would have been fine with that if they had any parts or some way to maintain or rebuild it. The technical know-how of the support team was not very proficient or helpful. Instead was given a coupon for 25% off a new saw not very green of them if every 4 years I have to throw it away and buy a new one.

2
241093074
This is one of the best buy I have made.

I bought this saw about a year ago. It does as good as a gas saw and I am well pleased with it.

2
241067295
We both love this saw!

Bought it for myself for Mother's Day but the hubby likes it more than his Stihl. We've both had it with yanking to start.Only drawback for me is that it's mighty heavy for an arthritic 65 year old woman.

2
240682661
Great power and durability and longevity

Over the years I been skeptical about buying battery operated yard and lawn equipment. Thinking the torque would be weak not lasting and not durable. I bought my first 80V lawnmower and weed trimmer a couple of months ago. They worked so impressively that I decided to invest in an 80V chainsaw and leaf blower and none of them have let me down. All pros no cons. 5 stars.

2
240612535
80v chainsaw - Great product

I swapped from a gas powered chainsaw and I have been very pleased. Great power and I love the quiet use. Doesn't disturb the game on my hunting property.

2
240301918
80 V pro cordless 18

Only gripe I have is chain oiler seems to leak

2
240073041
Great chainsaw

As powerful as gas powered chainsaws without the trouble of dealing with gas mixing and saving my arm from pulling the cord to start.

2
239423347
Great saw for new homeowner

I have been using the 80v line of tools for some time. I recently brought a house and needed to clear the yard of some small trees. This saw worked perfectly for my application. Nice quiet operation and simple to use. You need to practice safety precautions of course while using the saw. I didn’t have any issues or any close calls no kickbacks while using the saw. The included 2ah battery lasted a decent amount of time. I was able to cut down a small apple tree on one charge. The included charger charges the battery in 30 minutes. The saw is built well and I feel it will last for years. I am enjoying using this saw.

2
239158132
So much power!

I used to cut fown some massive limbs on a large tree. It cut thru them like butter . I have used a gasoline chain saw before. This chainsaw is lighter has less vibration and no fumes. I also Iike it that I didn't have to pull a cord over and over to start it .

2
239067744
Impressive Power

I bought this because I grew tired of tuning up the old Gas Saw and IMO Nothing worse then saw stalling out on the ladder this saw just push a button and it's on. One Battery about the equivalent of 2 1/2 tanks on gas Saw Cut Down hardwood Tree 36 inches in Diameter and cut it up in firewood length on Two Battery Charges no way am I going back to gas Saw

2
239054603
Chain saw

I use this all the time it cuts as good as any gas powered chainsaw I’ve used.

2
238888729
So happy to have switched

I had a stihl and was fed up with starting it maintaining it and the noise that drove me nuts. I switched to this and now it is a pleasure to do tree work. I would recommend this chainsaw for any landowner

2
238866117
Good saw long runtime

Saw works great. Only issue I have is that it leaks bar chain oil when not in use. I guess it would be best to drain the chamber when set on the shelf

2
238410609
Good price range for it's usage

I bought this 2 months ago and it is so much nicer quieter cleaner about same weight as gas last longer then expected I did buy 2nd battery due to my acre's. trim up over grown areas it will cut thick stumps between 20-30 inches.

2
238346051
Great Saw!!!

I have had my saw a month and love it! It cuts great and fits good in your hand. Its more powerful than I thought it would be. I am satisfied with the battery life in relation to its amp hours. It rechargers surprisingly quick. Plain and simply I am very happy with this tool! It meets my needs. All of the Greenworks staff that I have spoken to has been very courteous and friendly. I have and will continue to recommend this saw to numerous people.

2
238276356
Amazing

I'm happy with it

2
238258943
Good saw

Light weight and convenient holds charge cuts very well nice to be able to turn off load wood and restart with the push of a button

2
238119250
Never use gas again

Replace three different gas chainsaws with this battery operated beast. It cuss as well as any gas chainsaw I’ve ever owned and feels much safer.

2
235318097
We are so happy with this saw!

Just bought a house and have to buy many new gagetsstumbled upon a green works leaf blower with two batteries is Costcogot itloved itthen came a turn to get a chain sawI went to lowes and got whatever was in stock….oh my godit was horrible!itHeldA charge for about 4 min and the it took hours to chargeso we had to return and I went ok googleTo see what’s in the market-firstSite to open was a greenworksand haven’t a great experience with leaf blower we decided to get a leaf blower with same 80v batteryso now we have 2 device2 chargers and 3 batteriesbest decision ever! Chain saw warms about 25 min non stop on one batterysoooooo awesome!Choosing a pressure washer now and we are leaning towards getting one of greenworks toowhy try something else when we found something so good!Ps it was delivered a day earlier then promised!another bonus!

2
235124859
Very positive so far

Looks like a good product. Time will be the teller. Not as strong as gas but so far so good.

2
234966502
Pleasantly surprised.

It did a fantastic job of clearing downed trees and limbs after Hurricane Ida. So valuable during a time when gasoline was tough to acquire.

2
233672081
Love this saw!

I recently bought this saw as a replacement for an older gas saw. I’m really enjoying using this tool-plenty of power easy to use. Battery chargers pretty quickly. Overall glad I made the decision to buy this tool!

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