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40V HP Brushless 15 in. Cordless Carbon Fiber Shaft Attachment Capable String Trimmer with 4.0 Ah Battery and Charger

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  • Includes High Performance Brushless Motor for Increased Power
  • Lightweight Carbon Fiber Shaft Provides Increased Durability
  • Works with all RYOBI 40V Batteries
  • View More Details
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Product Overview

The RYOBI 40V HP Carbon Fiber Attachment Capable String Trimmer gives you the cordless convenience you want with the GAS-LIKE POWER you need. A carbon fiber shaft provides added durability. The EXPAND-IT attachment capability allows you to transform your trimmer into an edger, blower, pole saw and many more tools with the available attachments, meaning you can save time, space, and money. The premium HP Brushless Motor provides more power, longer runtime, and a longer motor life. This unit is equipped with the REEL EASY+ 3-in-1 Bump Feed Head with SPEED WINDER, which can be reloaded in 60-seconds or less. This REEL EASY+ head can function as a bump feed head, bladed head or fixed line head. The variable speed trigger and 2-speed switch deliver increased control for any application. The adjustable 13 in. to 15 in. cutting width allows you to optimize your trimmer for increased runtime or increased productivity. This lightweight and well-balanced design also has an adjustable front handle for user comfort. The included 40V rapid charger, charges your RYOBI 40V batteries 4X faster than the standard charger. The RYOBI 40V HP String Trimmer, batteries, and rapid charger are all compatible with 75+ RYOBI 40V products. This tool is backed by a 5-Year Tool Warranty.
  • Added durability with a carbon fiber shaft
  • Attachment capable: works with RYOBI EXPAND-IT attachments
  • Brushless motor for maximum power and durability
  • Reel Easy+ 3-in-1 bump feed head
  • Bump feed head for easy reloads in under 60-seconds, includes speed winder, compatible with 0.080 in. or 0.095 in. cutting line
  • Bladed head with heavy-duty serrated blades, ideal for heavy weeds and thick grass
  • Fixed line head, designed for fast and simple reloads, no winding or bumping required, line pivots for increased durability and long-life
  • Premium dual 0.095 in. line
  • Variable speed with 2-speed trigger for more control
  • Adjustable 13 in. to 15 in. cut swath
  • Adjustable front handle for user comfort
  • Includes RYOBI 40V 4.0 Ah lithium battery
  • Includes a rapid charger for 4X faster charging
  • Works with all RYOBI 40V lithium batteries
  • 5-year tool warranty, 3-year battery warranty

  • volt, amp, string trimmer, mower, battery, cordless, electric, gas, 40. ryobi

  • Click here for more information on Electronic Recycling Programs
  • California residents

Additional Resources

From the Manufacturer

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Name40V Expand-It Cordless Battery Attachment Capable String Trimmer with 4.0 Ah Battery and Charger40V HP Brushless 15 in. Cordless Carbon Fiber Shaft Attachment Capable String Trimmer with 4.0 Ah Battery and ChargerM18 18V Lithium-Ion Brushless Cordless String Trimmer Kit with 6.0 Ah Battery and Charger40V Brushless Cordless Battery Attachment Capable String Trimmer and Edger Attachment with 4.0 Ah Battery and Charger
Save $30.00 (17%)
Voltage (v)40v40v18v40v
FeaturesAttachment Capable,Precut Lines,RechargeableAttachment Capable,Brushless,Edger Conversion Capable,Precut Lines,Rechargeable,Zero EmissionsAntivibration,Brushless,Rechargeable,Zero EmissionsAttachment Capable,Brushless,Edger Conversion Capable,Precut Lines,Rechargeable,Zero Emissions
Line Advance SystemBumpBumpBumpBump
Voltage (volts)40 V 40 V
Power TypeCordlessCordlessCordlessCordless
Shaft TypeStraightStraightStraightStraight
Battery/Charger(1) 4 Ah Battery & Charger Included(1) 4 Ah Battery & Charger Included(1) 6 Ah Battery & Charger Included(1) 4 Ah Battery & Charger Included
Trimmer Line TypeStringStringStringString
Start TypeElectricElectricElectricElectric
Line Style Size.
View ProductView ProductView ProductView Product



Assembled Depth (in.)
35.31 in
Assembled Height (in.)
6.65 in
Assembled Width (in.)
7.87 in
Line Style Size
Maximum Cutting Path Diameter (in.)
Recommended Line Diameter (in.)
Shaft Length (in.)


Assembly Required
Battery Amp Hours
4 Ah
Battery Type
Lithium Ion
(1) 4 Ah Battery & Charger Included
Charger Included
Charger Included
Attachment Capable,Brushless,Edger Conversion Capable,Precut Lines,Rechargeable,Zero Emissions
Head Type
Wind without Assembly
Battery,Blade,Multiple Heads,No-tool Line Replacement,String
Line Advance System
Number of Total Batteries Included
Number of Trim Lines
Power Type
Product Weight (lb.)
Shaft Type
Start Type
Tools Included
No Additional Tool,String Trimmer
Trimmer Line Type
Trimmer Type
Hand Held
Voltage (v)

Warranty / Certifications

Manufacturer Warranty
5-Year Limited Tool Warranty, 3-Year Limited Battery Warranty

Questions & Answers

Typical questions asked about products:

  • Is the product durable?
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Customer Reviews

  • 4.7
    out of 774 reviews
  • 94%recommend this product
Filter by:
Showing 1-10 of 774 reviews
Just as good as gas
My neighbor has this model and I have the gas powered head. After trying his I bought one for myself. I already had most of the attachments. The battery last long enough for me to trim, edge and blow my grass before I have to recharge. It is so quiet I can start earlier in the morning and not wake the neighbors. No gas smell, exhaust smoke or heat.
  • Verified Purchase
  • Recommended
Beyond Impressed
My wife & I just bought a 5 acre "fixer upper." We all know how difficult small engines are & w/ 5 acres of overgrown property, I needed a backup in case the gas engines didn't work. Been using this thing all weekend & I'm blown away. It tore through the brush, limbs & weeds w/ ZERO ISSUES. I was skeptical when purchasing, but couldn't be more pleased. I've attached 2 pictures of the corner of my property to show what this product has been working on. Very pleased so far. Hope it holds up.
    • Recommended
    3 found this review helpful
    Works Like a Charm
    [This review was collected as part of a promotion.] I have a powered Ryobi 40V self powered lawn mower and I've been very impressed with it. Uses the same battery as my lawn mower I wanted a trimmer with the same battery and could use my existing attachments from an old gas powered trimmer. The Ryobi trimmer exceeded my expectations. Rototilling I thought the battery would not do the job but I did the job with battery power to spare. A great product! Photo of all my Ryobi tools attached.
      • Recommended
      So freaking light and good performance
      [This review was collected as part of a promotion.] It's so light and the batteries last up to 1hr good product for the price.
        • Recommended
        STRONG enough to MOW your yard!!! Great Battery life and charges quick.
        This was purchased to trim around the house, and clean up the ditches in the front. It accomplished that and so much more! My tractor died, and was forced to mow my large yard, out of necessity. I recommend ONLY this model or a better one in the series. This is robust, comes with brush-less motor, carbon fiber shaft, and durable construction! I recommend NOT using the faster speed, because all it does for the most part, is drain the battery faster. The SLOW speed is sufficient enough! I am waiting to afford other accessories now. BEST purchase this year.
        • Verified Purchase
        • Recommended
        4 found this review helpful
        very powerful and long lasting battery
        I bought this to replace a temperamental 2 stroke gas trimmer and man what an improvement! I have a 2 acre property with many trees as well as brush surrounding the perimeter. I am able to trim around all my trees etc. on one charge. The brush cutter head is also very impressive I cut through some thick brush and it just wouldn't quit. Over an hour of usage no problem. This has way more power and works so much nicer than any gas trimmer I have used. No vibrations like the gas models, and way quieter. It is about the same weight as a gas trimmer but that's due to the 40v battery which is well worth the trade off for the 1 hour run time. Highly recommended
          • Recommended
          Good Bye Gas
          [This review was collected as part of a promotion.] I bought the 18v and if you live in the city great choice. The new 40v takes the place of the gas power weedears. This weed eater is light weight even with the 40v. Would like to see it with just a little less weight Plus.. This weed eater can be used around flower beds own low speed then back to high speed to cut just about anything. You can use string or the orange cutters in thick or tall grass. The string feed works great so far and easy to reload replacement string. Is there a way the shaft can be adjustable for shorter people. If it could slide in and out 4 to 6 inches for better control. The wife enjoys taking care of the yard work.
            • Recommended
            I wouldn’t buy it again
            The carbonfiber pole melted at the joint after 25 min of use
            Response from RYOBIOutdoorsJun 28, 2021
            Hello, Jaysee - We are sorry to read about your experience with the string trimmer! And we'd like to discuss this further, so we can work on improving your experience. If you would, will you please be looking for an email from us at reviews@ryobitools.com? RYOBIOutdoorTools
              • Recommended
              12 found this review helpful
              This thing rocks!
              I finally broke down and bought a battery powered trimmer. I was hemming and hawing over it for a while now. Now I'm kicking myself for not doing it sooner. This thing rocks! And it's compatible with the attachments from my 20+ year old gas powered Poulan Pro that it replaced! I'm now contemplating getting the matching mower when my (also) 20+ year old gas mower s###s the bed.
                • Recommended
                3 found this review helpful
                Replaced my 35 year old Royobi with this model
                After reading reviews and talking with the Royobi representative at our local store yesterday I chose this model. I’m with dealing with mixed gas eapecially ethinol which really ruins any small engine. My old head unit finally died and i wanted to still use my Royobi attachments. This tool accepts all of them. I am convinced that the new battery systems are relible. It took less than 40 minutes to charge the new battery. The new trimmer is lighter and easier to handle. Since it was too hot to work today, I spent 20 minutes clearing some heavy brush and blackberry bushes only using the standard head. OMG! What a beast. Quiet, powerful and amazingly easy to handle. I wiped out two rough sections in minutes and still have half charge. Ill be going back with the heavy blade and cultivator later. All my older attachments fit and work well. I have the original string trimmer, hedger, brush blade and cultivator. The best way to use the cultivator is to work backwards rather than pushing forward. This new power head can do the job. The other positives for me is not needing ear protection and not annoying neighbors.
                  • Recommended
                  Showing 1-10 of 774 reviews