40V 16" Brushless Chain Saw with 4Ah Battery & Charger

Model: #RY40550

4.7 | 78 Reviews
  • Brushless motor delivers fast cutting speeds and high torque
  • Mechanical chain break stops chain automatically
  • Variable speed throttle provides ultimate power and control

Brushless Motor for GAS-LIKE POWER™


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 40 products, providing versatility to get the job done.

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

Ryobi Help+

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



40V 4.0 Ah Battery
Bar & Chain Size
Variable Speed
Replacement Chain
Y56 .050
12.4 lbs.



40V 16" Brushless Chain Saw with 4Ah Battery & Charger
40V 16" Brushless Chain Saw with 4Ah Battery & Charger is rated 4.7 out of 5 by 77.
Rated 4 out of 5 by from Solid Saw Thus Far I have used this to cut up a fair variety of trees (cherry, ash, white pine, poplar, walnut) and limbs up to a 15" cherry and a 22" poplar. Had good power. Nearly the same as my similarly sized gas powered stilhl. Ease of use us great. Large trees will run batteries out fast, but if you have time to address over multiple days you will be fine. You do need to remember that the chain tensioner requires the bar to be loosened slightly to be effective as opposed to most gas saws. Also recommend draining bar oil between uses.. Longevity remains to be seen but thus far it is a joy to use and is really nice if you need to tote it around in a car .
Date published: 2020-06-23
Rated 3 out of 5 by from works well for yard work I bought this saw as a replacement for a Dewalt 40v saw because I already numerous Ryobi tools including a 40v weed eater that works very well. The saw cuts well but I would not recommend it for the following reasons. With the oiler adjustment turned down as low as it will go there is way too much oil leakage. Do not set it down on anything you do not want oil on. The chain adjustment is a pain to get set properly and a real pain in the rear end to put the chain back on when it throws the chain, which it will do. I have owned numerous chain saws and this is the hardest I have ever come across to put the chain back on and adjust properly.
Date published: 2020-10-08
Rated 5 out of 5 by from Great tool for cutting wood in the city I had to drop several trees in my yard in the city. The trees needed to be trimmed back and topped before dropping. That meant cutting on a ladder. I have tried using a gas chain saw, but it is dangerous climbing a ladder with a running chain saw and even more dangerous pull starting a chain saw on a ladder. With the Ryobi chain saw, I just carry it up the ladder and start cutting! It has plenty of power to top the trees as well! Thank you for making a dangerous job much safer! I dropped the saw when I was 20 feet up in a tree and there was no damage to the saw! Incredible
Date published: 2020-07-22
Rated 5 out of 5 by from I bought my saw in July and I use it all the time starts every time cuts smooth and very easy to handle. Had a popular hated it.
Date published: 2020-10-17
Rated 3 out of 5 by from Issues with Bar/Chain Oiler I really want to like this chainsaw. For what I need, small to medium trees, this chainsaw has plenty of power to make the cuts. However, the chain/bar oiler did not work. I was constantly having to stop to hand oil the chain and bar. This one flaw is not something I can overlook moving forward.
Date published: 2020-05-15
Rated 5 out of 5 by from Love it. Great tool. Works great, had no issues with it, and it cut like a champ.
Date published: 2020-10-16
Rated 5 out of 5 by from Powerful Tool After borrowing a plug-in electric chainsaw for storm cleanup, I decided to buy my own saw for future use. I knew I didn't want the maintenance of gas, so I decided on battery electric. A tree fell across a driveway in an area where I didn't have access to power. I was surprised that the battery was able to last to remove the entire tree from the driveway. The chainsaw had more than enough power and battery life for this job and any others I may encounter in the future.
Date published: 2020-09-01
Rated 5 out of 5 by from Meets all my Needs Purchased 2 months ago for tree cleanup and works perfect for me. Plentt of battery life and with the batteries from my other Ryobi 40V tools I am set for any situation I can imagine. I have no concerns about taking down 12 to 14 inch trees with this and doubt I would have a need for anything larger. Been transitioning all of my 2 cycle yard tools to the Ryobi 40V family for about 2 years and have just 1 edger to replace and I am done. EXTREMELY PLEASED!!
Date published: 2020-06-11
  • y_2020, m_10, d_18, h_16
  • bvseo_bulk, prod_bvrr, vn_bulk_3.0.12
  • cp_1, bvpage1
  • co_hasreviews, tv_7, tr_70
  • loc_en_US, sid_312258527, prod, sort_[SortEntry(order=RELEVANCE, direction=DESCENDING)]
  • clientName_ryobioutdoortools