40V 12" Cordless Chainsaw with Auto-Tension


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40V Max Li-ion 12" Cordless chainsaw featuring an auto-tensioning chain system and automatic chain oiler

Automatic, tool-free chain tension system

Automatic chain lubrication with oil level indicator

Compact and light weight design

Includes battery indicator for quick battery life review.

40V 12" Cordless Chainsaw with Auto-Tension ITEM WG380

Availability: Out of stock


Technical Specifications
  • Rated Voltage
    40V Max
  • Chain Speed
  • Oil tank capacity
    4.5 ounces
  • Chain Pitch
  • Chain Gauge
  • Chain Links
    7.9 LBS
  • Charging Time
  • Warranty
    3 Years
You're Getting
  • (1) - 12" Cordless Chain Saw
  • (1) -Chain
  • (1) - Chain Bar
  • (1) - Blade Protection Cover
  • (1) - 40V Charger (WA3747)
  • (1) - 40V Battery (WA3580)

Frequently Asked Questions

  • Does this include a battery and charger?

    Yes, this includes one 40V battery (WA3580) and one charger (WA3747).

  • How much does the 40V 12” Cordless Chainsaw weigh?

    The Worx 40V 12” Cordless Chainsaw weighs 7.9 pounds, less than a gallon of milk, even with the battery installed!

  • How powerful is the 40V 12”Cordless Chainsaw?

    The 40V Worx MAX Lithium battery included with the 12” Cordless Chainsaw is the same battery we trust to power our 40V Cordless Mower, TURBINE40V Blower, 20" Cordless Hedge Trimmer, among others, like the Hydroshot. Since the battery can stand up to those high-powered applications, you can trust it to keep up with you.

  • What’s the runtime for the 40V cordless chainsaw?

    The runtime will vary depending on the type and density of wood you’re cutting and how thick the branches are for each cut. For example, on one charge of our 2.0Ah 40V battery, you can expect up to 23 cuts on 6” thick hardwood. Since most branches you’ll cut are less than that, you’ll typically get a much higher yield.

  • How long does it take to charge the battery?

    The enclosed charger and battery take about 8 hours to fully recharge.

  • Does this use the same batteries as my other 40V WORX tools?

    Yes! With 40V Share Volt, you can share the battery and save money. Your Worx 40V 12” Cordless Chainsaw can use any WORX 40V battery you already have. By sharing the battery between tools, you’ll always have the power you need to complete any job.

    See our entire 40V Share Volt line

  • Are lithium batteries interchangeable with the Ni-Cad?

    Our 40V lithium tools and Ni-Cd tools are separate platforms and are not interchangeable. Lithium batteries offer our customers maintenance-free technology without the hassle of managing the memory effect inherent in Ni-Cad batteries.

  • Are the 40 Volt Max Lithium batteries interchangeable with the 20 Volt Max Lithium Battery?

    While 40V Share Volt and 20V Power Share allows you to share batteries between tools within the same voltage family, batteries should only be used with tools of a corresponding voltage. Use your 40V Max Lithium battery with any 40V WORX tool – even the garden tools – but save your 20V battery for your 20V tools.

    See our entire 40V Share Volt line

  • What is the chain speed?

    The chain speed is 14.8 ft/s.

  • What kind of oil do I use on the chain saw? How much oil will the chain saw need?

    The 40V Cordless Chain Saw can take any kind of bar and chain oil, which is available in most hardware stores or stores that sell chainsaws. The oil tank capacity will hold 4.5 ounces.

  • How can I prevent oil leakage?

    With a saw designed to self-lubricate during operation, a little oil leakage is normal. To help minimize and prevent leakage, we recommend the following:

    -Use only enough oil for the task at hand.

    -Remove oil cap and immediately replace it after operation to vent the oil tank. This relieves any accumulated pressure during the oiling process.

    -Allow the saw to cool down before storing.

    -Wipe down the saw sprocket area.

    -Remove oil from saw before storage.

    -Store the saw horizontally when not in use.

  • How many chain drive links are on the 40V Cordless Chainsaw chain? What is the chain pitch? What is the chain gauge?

    There are 40 links on the 12” Cordless Chainsaw chain. The chain is a 3/8 inch pitch and has a gauge of 0.043”.

  • How do I buy a replacement bar or chain? Can I get them locally?

    Local hardware or home improvement stores may carry accessories that fit your Worx chainsaw. Look for the following items compatible with your WG380 40V 12” Cordless Chainsaw.


    QIRUI: A0(T)-45E, Oregon: 90PX045X


    QIRUI: PO12-43SR(T), Oregon: 124MLEA041

  • Are there any precautions I should follow when using the chainsaw?

    Carefully review the owner’s manual for all safety information and guidelines for the Cordless Chainsaw. Follow safety precautions while using any power tools – including wearing safety eyewear, gloves, appropriate shoes & clothing, and keeping hair tied back. See the owner’s manual for complete safety instructions and details.

  • What is the guarantee/warranty?

    If you decide the Worx 40V 12” Cordless Chainsaw isn’t the right tool for you, we offer a 30-day Money Back Guarantee from date of receipt (less shipping and handling). Please call our customer service center at 1-866-354-9679 (WORX) and we’ll be happy to assist. View more information here.

    We know your tools are indispensable, so we cover each tool with a 2 Year Limited Consumer Warranty. You can extend your warranty to 3 years by registering online within 30 days of purchase. Already have your 40V Cordless Chainsaw? Register now!

    Worx batteries are covered by a 1 Year Limited Consumer Warranty and are not eligible for warranty extension.

    Parts subject to normal wear and tear are not covered by the tool’s warranty. View more information on our warranty here.

  • Where can I get replacement parts?

    Lose your charger? Need an extra battery? Many replacement parts are available online under Accessories.

40V 12" Cordless Chainsaw with Auto-Tension is rated 4.7 out of 5 by 22.
Rated 5 out of 5 by from Nice convenient little saw... I’ve used this saw on 6” limbs and very impressed with the performance. Battery life is adequate for small jobs.
Date published: 2018-08-07
Rated 5 out of 5 by from Great product Bought this couple weeks ago used it on a pine tree I dropped and it did fantastic. Only used half the battery. Which I would have bought it sooner.
Date published: 2018-07-02
Rated 5 out of 5 by from Independence!! I have had my chainsaw for about a month and I love it. I do not have to keep asking my boyfriend to cut the small trees ans larger branches for me. He said it is just right for me and would be great for camping.
Date published: 2018-06-26
Rated 5 out of 5 by from Tough I've had this chainsaw fir about a month and used it on a mesquite tree and it did the job.
Date published: 2018-06-24
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