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

Model: #RY40580

4.8 | 119 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 is rated 4.8 out of 5 by 117.
Rated 5 out of 5 by from Perfect size and power I live on a wooded lot that drops a lot of limbs and this makes cleaning them up very easy. If anything a little bigger needs to be taken down or cleaned up it has the size and power to take care of it
Date published: 2022-05-07
Rated 5 out of 5 by from Cut easily Used the chainsaw to cut down a couple of trees in my yard. It worked great, was easy to use and quite.
Date published: 2022-05-04
Rated 5 out of 5 by from Works as good as any gas powered chainsaw I bought mine about a week ago and it has had no problems taking down a few trees I wanted gone
Date published: 2022-05-01
Rated 5 out of 5 by from Great power Bought this because a friend purchased it and was happy with it. I hate having to mess with pull starting a traditional chainsaw and worrying about mixing gas. My friend assured me this was powerful and it was. Cut through large pieces of wood from a felled tree without difficulty. Very happy with the purchase!
Date published: 2022-05-01
Rated 5 out of 5 by from no more gas i bought 40v 18 in. chainsaw two weeks ago,and im sure it will be alsome
Date published: 2022-04-30
Rated 5 out of 5 by from Bob The best product, never no problems with Rubio brand, have new items all the time, so makes even better.
Date published: 2022-04-29
Rated 5 out of 5 by from Impressive Purchased this chainsaw over gas powered or electric for the convenience of not having to use gas or an extension cord for power. Was hoping for better than average power from the ryobi 40 VOLT and after a few hours of use, I've not been disappointed. Love this chainsaw. I get about 45 minutes of solid cutting time from the 5ah battery that was included with the saw. I'll definitely be looking to pick up a second battery though. Probably the 6ah. That said, the quick charge charger is pretty fast, I'd say just under 30mins to fully charge the battery from dead. On a side note, as the battery nears fully drained, the saw will stall while cutting (as opposed to going from working to an immediate shut off). Once I found the sweet spot for the saw as far as chain tension and oiler adjustment were concerned, it went through wood like a hot knife through butter. There's a lot of gunk that accumulates inside the casing after use, but cleaning is a piece of cake. Adjusting chain tension also easy and the bar stays in position once properly secured. Was intending on buying the shorter saw, but I got the 18 inch model because it was on sale. Now I'm extremely happy I did...great size. The only criticism I can think of is that it does leak oil when not in use, but I already knew that from reading other reviews so I emptied the reservoir after use to minimize any mess in the bottom of the carry case. Also, love the carry case. Just hope the handle lasts. There are a few video reviews of this saw on YouTube. If you're considering buying one, have a look at them...
Date published: 2022-04-24
Rated 5 out of 5 by from 18 inch chain saw Light but powerful enough to cut through 24" logs, No sore shoulder from starter rope and quiet. Will cut cord on one charge! Great tool
Date published: 2022-04-23
  • y_2022, m_5, d_16, h_21
  • bvseo_bulk, prod_bvrr, vn_bulk_3.0.27
  • cp_1, bvpage1
  • co_hasreviews, tv_3, tr_114
  • loc_en_US, sid_314600175, prod, sort_[SortEntry(order=SUBMISSION_TIME, direction=DESCENDING)]
  • clientName_ryobioutdoortools