40V EXPAND-IT™ Attachment Capable String Trimmer WITH 4AH BATTERY & CHARGER

Model: #RY40250

4.7 | 3737 Reviews
  • More power, more run time, and lighter weight than previous model
  • EXPAND-IT™ Attachment Capability for ultimate versatility
  • REEL-EASY+™ Bump Head for reloads in under 60 seconds

GAS-LIKE POWER™ With Cordless Convenience


Ryobi five year warranty
*Tool Warranty

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

Ryobi three year battery warranty logo
* Battery Warranty

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

The RYOBI 40V System features over 50 products, providing versatility to get the job done.

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40V 4.0 Ah Battery
Cut Swatch
Adjustable 13" - 15"
Line Advancement
Bump Feed Head
Line Size
Variable Speed
5 year tool warranty and 3 year battery warranty
11.3 lbs.



40V EXPAND-IT™ Attachment Capable String Trimmer WITH 4AH BATTERY & CHARGER
40V ATTACHMENT CAPABLE 15" STRING TRIMMER KIT is rated 4.7 out of 5 by 3729.
Rated 4 out of 5 by from Works well for suburban use Added this to the electric mower and glad I did. Battery only down to half after finishing trimming my 0.25 acre yard. Would be nice if it accepted thicker line, but for suburban use it does the trick.
Date published: 2023-05-24
Rated 4 out of 5 by from Very good trimmer I bought it 2 weeks ago and used it once. It is powerful enough to trim the front and backyards but not enough to finish the edging. The battery died and needed recharging. It is still a very good trimmer. Need better instruction on reloading the string trimmer, and trouble shooting/correcting any problem with the bumper/feeder. Need better/more detail instruction how to disassemble to feederbumpers/string loader.
Date published: 2023-05-23
Rated 5 out of 5 by from Works well even in tall grass I’ve used it several times and I’m impressed how well it works and how long the battery lasts and I can use my blower batteries if I choose but haven’t needed to. I run out of power by the time the trimmer does. I would recommend it.
Date published: 2023-05-23
Rated 5 out of 5 by from Love love! This tool is a bit heavier than the trimmer that uses the 18v, but the power is worth it! Plus it's same battery as my lawn mower so technically I have two batteries I could use on my lawn mower.
Date published: 2023-05-21
Rated 5 out of 5 by from Ryobi 40v string trimmer Very pleased with performance . Works as well as a gas powered trimmer. String holds up better
Date published: 2023-05-21
Rated 5 out of 5 by from Great trimmer I am very pleased with this trimmer and have used it several times.
Date published: 2023-05-20
Rated 3 out of 5 by from Need a new motor Received for Father's Day last year - worked great. First time use this year and debris came from motor and began smoking. I removed battery and let smoke subside. Now motor just makes whining noise and no movement. Need to replace motor - have a part number I can order?
Date published: 2023-05-20
Rated 5 out of 5 by from Love it Bought it about a month ago and it's doing an outstanding job!
Date published: 2023-05-20
Rated 1 out of 5 by from Awful I am so annoyed over the weedwacker. It worked beautifully last fall when I purchased it and used it a couple times and I was super satisfied. I went to replace the string after using it the first time just now, and I was able to get the head off - however after replacing the string and trying to put the spool back on, there is an obstruction in 2 of the holes on the head preventing it from going back on. The manual is super unhelpful. I tried to call customer support and chatting however after an hour on hold, finally gave up. I guess I will be purchasing another brand but too bad it has been too long to return this one to the store - or buying a head replacement which I should not have to do after only a handful of uses :( I would stay away.
Date published: 2023-05-18
Rated 1 out of 5 by from Cannot unlock Spool Head It will be impossible to change the string, because the spool head cannot be unlocked. I looked at Youtube, and it should be just a twist, but I nearly broke my wrist and it would not budge
Date published: 2023-05-18
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