18V ONE+ HP Brushless String Trimmer/Edger with 4Ah Battery and Charger

Model: #P20120

4.7 | 151 Reviews
  • 18V ONE+ HP Technology Provides 1.5X More Power Compared to P2030
  • Shaft Twists to Easily Convert to Edging
  • Over 175 ONE+ Tools – All Work With Any RYOBI 18V ONE+ Battery
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More Power. Longer Runtime. Longer Motor Life.


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This product is covered by a 3-year limited warranty.

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18V ONE+™ 4.0 Ah Battery
Maximum Cut Diameter
Recommended Line Diameter
7.3 lbs.
Shaft Type
3 year limited warranty



18V ONE+ HP Brushless String Trimmer/Edger with 4Ah Battery and Charger
18V ONE+ HP Brushless String Trimmer/Edger with 4Ah Battery and Charger is rated 4.7 out of 5 by 143.
Rated 5 out of 5 by from Easy to Use Bought this unit to replace a gas powered model. The battery lasted about 1 hour of run time, cutting through heavy grass. The Auto Line feed worked better than expected with all the wet grass on the unit. After years of bumping the trimmer to feed line, just letting go of the throttle and having the line feed was appreciated. The High and Low speed settings with the variable speed trigger is a big improvement over the gas powered unit. This unit on Low speed and light throttle will cut nicely thru mid height grass. The adjustable string length 11" or 13" helps saves battery run time.
Date published: 2021-04-27
Rated 5 out of 5 by from Power to trim my whole lawn!!! I bought this trimmer because I was in the market for new battery operated power tools and thought I would take a chance on the trimmer and at the very least get a new battery and charger for my other future tool purchases. Needless to say I am absolutely surprised by the power and battery life of this trimmer! I have a old ride on lawn mover (no zero point turn here) so I have quite a few areas to clean up after I mow and this Ryobi battery powered trimmer was able to weed wack my entire yard and the kids play area and the battery didn’t even lose 1/4 charge!
Date published: 2021-05-21
Rated 5 out of 5 by from the edging made it worth it alone Being able to swap over and edge is awesome. Ive used gas trimmers all my life and always just turned it sideways after to trim up the driveway/sidewalk. But i always ended up having it catch and pull into the grass, leaving a burnt spot instead of a straight line. Made it a delicate balace and i took 3x as long to do it. This thing didnt even try to pull, and it didnt feel like it was because it was underpowered because it cut just fine. The wheel makes it easy to keep the lines straight too. Definitely worth it imo
Date published: 2020-12-26
Rated 5 out of 5 by from Light weight with excellent features I bought this yesterday at Home Depot mainly because it was light weight. I am 70 years old so I didn't need a heavy trimmer. Anyway I unpacked it and had it assembled in 5 minutes and put the battery in the charger which were included. Features are great. The foot operated control which changes it from a trimmer to an edger is shear genius and the automatic line feed is another great feature. This morning I plugged in the battery and went to work. Performed as advertised. You won't find a better deal anywhere!
Date published: 2021-01-10
Rated 5 out of 5 by from Use as trimmer and edger A great buy because the handle adjusts so you can use this as an edger as well. I trimmed my lot front and back plus edged the drive and sidewalks with 50% charge left on my 4AH battery. Plenty of power and I never had to switch to high speed. No more trying to start a gas trimmer or dragging a cord around with me. Makes yard work much easier. And it has a unique auto string feeder that doesn’t require bumping the ground.
Date published: 2021-11-05
Rated 5 out of 5 by from More power than I expected. Bought this in January. Finally, the grass and weeds are grown enough to use it! Although, like other reviewers, the spin up time is a bit long, once it's spinning at full RPM, this thing cuts better than my corded string trimmer. Also, it cuts better than my Ryobi gas powered trimmer. Next, I tried the brush cutter head on some brambles and small trees that were growing like weeds. It can handle up to 1/2" fibrous plants and I must say that it did a very good job at it. I bought this trimmer combination as a bare tool, because I already had batteries and chargers from my wood working tools. The 4AH lithium battery pack trimmed the entire yard and still had 50% charge left. Get the two pack and save some extra money!
Date published: 2021-06-01
Rated 2 out of 5 by from Lots of Line Decent trimmer, cheaply made compared to my other Ryobi One tools. Feeds line at an alarming rate and you will go through a spool in no time and the line is not cheap. Every time you let of the button it feeds more. Horrible design, but great for Ryobi to make lots of money. The cheap plastic edge that is supposed to cut the line does not work worth a crap.
Date published: 2021-04-30
Rated 5 out of 5 by from Great Weedwhacker We had this weedwhacker for around 4 months, and it really does what it is supposed to do. It cuts fast to get a nice and even trim around the edges of places we can't reach with the lawn mower, and lasts a long time when we use it.
Date published: 2021-11-06
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