40V HP Brushless Carbon Fiber Attachment Capable String Trimmer with 4.0 Ah Battery & Charger

Model: #RY40290

4.8 | 381 Reviews
  • Featuring 40V HP Technology for Maximum Power
  • Carbon Fiber Shaft Provides Added Durability
  • EXPAND-IT™ Attachment Capability Allows You to Transform Your Trimmer Into Other Attachment Capable Tools
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More Power. Longer Runtime. Longer Motor Life.


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*Tool Warranty

All RYOBI 40V tools are covered by a 5-year limited warranty.

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* Battery Warranty

All RYOBI batteries are covered by a 3-year warranty.

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40V 4.0 Ah Battery
Recommended Line Diameter
Compatible with 0.080" or 0.095" cutting line
Shaft Type
Maximum Cutting Path Diameter
11.6 lbs.
5 year tool warranty and 3 year battery warranty



40V HP Brushless Carbon Fiber Attachment Capable String Trimmer with 4.0 Ah Battery & Charger
Rated 5 out of 5 by from Works well Lots of power, quiet and capable Trimmer. Works well with no issues
Date published: 2022-12-29
Rated 5 out of 5 by from Another Win! I had the old gas trimmer 4 stroke that could take attachments. So naturally over the years I collected many attachments. When I decided to make the switch to 40v I went with all the tools so I would never have to fight gas powered tools in the spring again! No more winterizing, spring cleaning, oil changes, and pulling cords again! All my collection of attachments work flawless with this tool. I can run my edger on the low setting and it never struggles. Cutting branches with the pole saw works as good as any gas powered I have ever owned, 2 or 4 stroke, and I have owned several that always failed eventually. 1 battery with plenty of power to spare no matter what job im using it for. If your thinking of making the switch you won't regret it, I definitely don't!
Date published: 2022-12-23
Rated 4 out of 5 by from Nice unit with many optional tools Great performance and trimming power. The only thing is there is a loud squeak noise when you let off the trigger. This is the second one I've had and they both did the same thing.
Date published: 2022-12-21
Rated 5 out of 5 by from Powerful! The best weed eater I’ve ever used. So powerful and it is very high quality. Long enough pole to reach the ground easily as a 6’-1” person. I haven’t had to change out the head yet so we will see about that.
Date published: 2022-12-09
Rated 5 out of 5 by from Plenty of power... not too heavy I purchased this unit as a replacement to my Stihl 2-stroke. I was just tired of gas mixing, noise, fumes and winter storage prep. The Ryobi was quick to assemble and after a battery charge it was time to give it a field test. No ignition lever, no bulb priming, no chord pull... engage the variable speed trigger and you're in business. My first cut was just to get a feel for the machine. I trimmed about 1/2 acre that was near the road. The results were great. The supplied line was incredible and I didn't have to bump feed the entire half hour. Battery life remaining was an acceptable at 50% remaining. The next week, I borrowed a 12Ah battery from my Z54Li tractor. While this added more weight, I was able to trim our entire 3 acres with battery to spare. 5☆ for value (10% coupon used), design/features, ergonomics and included 2nd trimmer head.
Date published: 2022-11-15
Rated 5 out of 5 by from Great features and flexability I purchased this item a month ago. It has lived up to all my expectations. Very manageable and well balanced weight. Plenty of power and battery run time. Lots of flexibility for other attachments. Very satisfied with this purchase. to add other attachments.
Date published: 2022-11-15
Rated 5 out of 5 by from stronger than i had expected I have used this for four months now and am amazed how it even exceeds my older gasoline powered trimmers. No fuss starting and certainly less maintenance needed than in older technique.
Date published: 2022-11-06
Rated 5 out of 5 by from Love the 40V power!! I replaced a gas power multi-tool with this and I am 100% glad that I did. I no longer have to worry about grabbing the can with the right gas mix in it or winterizing another motor every year. I switched all my gas yard to to Ryobi 40V. Best move I have made as far as lawn care. Lighter weight, less noise and performs just as well.
Date published: 2022-11-04
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