40V HP Brushless 18" Chainsaw with 5.0 Ah Battery and Charger

Model: #RY40580

4.8 | 185 Reviews
  • 40V HP Technology Delivers 75% More Power Compared to RY40570
  • Mechanical Chain Break for Kickback Protection
  • Side Access Chain Tensioning and On-Board Tool Storage for Easy Adjustments
See The Entire 40V HP Lineup!

More Power. Longer Runtime. Longer Motor Life.


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.

View our current promotions for new product releases and the latest RYOBI savings!

Ryobi Help+

Your one stop destination for tips & techniques, manuals, troubleshooting, FAQs and more!



Bar Length/Chain Size
13.2 lbs.


40V 5.0 Ah Battery
Chain Oiler
Replacement Chain
Y62 .050


5 year tool warranty and 3 year battery warranty



40V HP Brushless 18" Chainsaw with 5.0 Ah Battery and Charger
40V HP BRUSHLESS 18" CHAINSAW KIT is rated 4.8 out of 5 by 184.
Rated 5 out of 5 by from Fantastic I brought this saw straight from the store, charged the battery and tightened the chain… I was amazed at the power and ease of use while reducing a pile of downed trees that had been cleared a year earlier. It cut through like butter with plenty of power ! I’ve been a ryobi fan for years and have many of your products including a 18v chainsaw. This has cemented my relationship with ryobi products for life ! Well done !
Date published: 2022-11-19
Rated 5 out of 5 by from Works great This saw exceeded my expectations of an electric saw and is as strong as my gas saw
Date published: 2022-11-13
Rated 5 out of 5 by from OUTSTANDING NO gas, NO pulling, Lightweight let go of the trigger, and the chai STOPS
Date published: 2022-11-04
Rated 5 out of 5 by from So far so good. I sold off my pro-model gas saws since I rarely use them and my back does not like that much weight anymore. This is so much lighter and easier to use. For around the house and cutting firewood this has more than enough power!!
Date published: 2022-11-04
Rated 5 out of 5 by from Nice saw Very happy with the chain saw. Works real good for what I have to do
Date published: 2022-10-30
Rated 5 out of 5 by from Ryobi Chainsaw Used it yesterday alongside my sibling with a Stihl, and we were both impressed with the power. Just need more rechargeable batteries on hand...
Date published: 2022-10-29
Rated 4 out of 5 by from Lightweight, powerful, leaks oil My Ryobi tools get more useful every time I add another battery. A single battery for this chainsaw is will cut a nice amount of wood, but when I use all my batteries, this saw becomes an beast! At a minimum there should have been a warning tag on the oil reservoir to warn the user that it is designed to leak oil even when not in use. I thought the cap was leaking. Fortunately it didn't dump oil on my driveway.
Date published: 2022-10-25
Rated 5 out of 5 by from So much better than gas! Much more dependable than gas, cheaper to run, less messy,as good of performance as gas,quiter,no smoke and smell, impressive quality! Needlessw to say, I'm very happy with it.
Date published: 2022-10-21
  • y_2022, m_11, d_21, h_21
  • bvseo_bulk, prod_bvrr, vn_bulk_3.0.34
  • cp_1, bvpage1
  • co_hasreviews, tv_3, tr_181
  • loc_en_US, sid_314600175, prod, sort_[SortEntry(order=SUBMISSION_TIME, direction=DESCENDING)]
  • clientName_ryobioutdoortools