The DeWalt DCS391B 20-Volt Max Lithium-Ion Cordless Circular Saw has a powerful 460 mwo, 5250 rpm motor that delivers power and speed to make the most demanding cuts with ease. The high strength and lightweight magnesium shoe provides job site durability for prolonged cut accuracy. It has a rubber over-molded comfort grip that delivers optimal balance, control and user comfort. 50 degree bevel capacity allows for aggressive angled cuts to tackle a multitude of tasks. A 6-1/2 inch carbide-tipped blade is included for cutting 2 times the material at 90 degrees and 45 degrees and more cuts per charge.
The DeWalt DCS391B 20-Volt Max Lithium-Ion Cordless Circular Saw has a powerful 460 mwo, 5250 rpm motor that delivers power and speed to make the most demanding cuts with ease. The high strength and lightweight magnesium shoe provides job site durability for prolonged cut accuracy. It has a rubber over-molded comfort grip that delivers optimal balance, control and user comfort. 50 degree bevel capacity allows for aggressive angled cuts to tackle a multitude of tasks. A 6-1/2 inch carbide-tipped blade is included for cutting 2 times the material at 90 degrees and 45 degrees and more cuts per charge.
The DeWalt DCS391B 20-Volt Max Lithium-Ion Cordless Circular Saw has a powerful 460 mwo, 5250 rpm motor that delivers power and speed to make the most demanding cuts with ease. The high strength and lightweight magnesium shoe provides job site durability for prolonged cut accuracy. It has a rubber over-molded comfort grip that delivers optimal balance, control and user comfort. 50 degree bevel capacity allows for aggressive angled cuts to tackle a multitude of tasks. A 6-1/2 inch carbide-tipped blade is included for cutting 2 times the material at 90 degrees and 45 degrees and more cuts per charge.
The DeWalt DCS391B 20-Volt Max Lithium-Ion Cordless Circular Saw has a powerful 460 mwo, 5250 rpm motor that delivers power and speed to make the most demanding cuts with ease. The high strength and lightweight magnesium shoe provides job site durability for prolonged cut accuracy. It has a rubber over-molded comfort grip that delivers optimal balance, control and user comfort. 50 degree bevel capacity allows for aggressive angled cuts to tackle a multitude of tasks. A 6-1/2 inch carbide-tipped blade is included for cutting 2 times the material at 90 degrees and 45 degrees and more cuts per charge.
Last updated at 03/24/2026 12:12:30
Dewalt 20v Cordless Circular Saw Dcs391 With 12v/20v Max Li Ion
Delivery $78.61
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originally posted on homedepot.com
After reading the other reviews for this saw, I took a chance, even though people's feelings were very obviously mixed. My basis for comparison are some ancient saws with only a couple horsepower and a really nice Bosch reman I use regularly, which was similarly priced when I bought it; this Ryobi stinks by comparison. I am saying POOR because I expect better performance from a low-end saw in this day and age, and I feel that the oomph put out by this is no better than the 30-year-old homeowner-quality Craftsman in my father's toolbox (I don't recall the HP rating of that one, sorry, folks). I'm disappointed with Home Depot for even putting this on the shelf and having the nerve to give only an RPM rating and amperage rating. That tells the buyer nothing about ... MoreAfter reading the other reviews for this saw, I took a chance, even though people's feelings were very obviously mixed. My basis for comparison are some ancient saws with only a couple horsepower and a really nice Bosch reman I use regularly, which was similarly priced when I bought it; this Ryobi stinks by comparison. I am saying POOR because I expect better performance from a low-end saw in this day and age, and I feel that the oomph put out by this is no better than the 30-year-old homeowner-quality Craftsman in my father's toolbox (I don't recall the HP rating of that one, sorry, folks). I'm disappointed with Home Depot for even putting this on the shelf and having the nerve to give only an RPM rating and amperage rating. That tells the buyer nothing about torque and horsepower. 5,000 no-load RPMs is a vague number because if the torque is low, 5,000 RPMs doesn't really mean anything. I found that this saw struggled with some 2"x6" Douglas Fir, and, although the lumber was a bit fresh, I really did find the saw's performance disappointing (also worth mentioning: I didn't even try the 20-tooth blade in the package, but, rather, I immediately upgraded to a combination blade from Irwin with 24 teeth). I will be returning this saw. Unfortunately, Home Depot is playing some kind of game where they don't physically stock in their stores all the same power tools they show online. So when I went to see my options in person, they were different from what I encountered on the website. I understand the business reasons behind this, but, sadly, I think this will be my last power tool purchase from Home Depot. I am really sorry to be giving such a negative review here--I own a great many of the cordless Ryobi 18V One+ line of tools, and I have been pleasantly surprised by their performance, which is the reason I tried this tool out in the first place. One final note of disappointment was that the laser guide needed calibrating out of the box, and, while this isn't a huge turnoff, it's also not a good thing. The manual explains how to correct this, but why would Ryobi box up a saw with a guide that isn't trued up? Why should I have to adjust that with a saw that's never been used? I didn't even find the guide helpful when it WAS straight. After maybe ten cuts, I decided it's going back in the box.
originally posted on lowes.com
I was surprised how powerful this saw can be and how long it ran. This was, however, on the 20v 4AH battery. Use one of those and you'll be in love. I just cut about 20 times on some treated 2x10's and it was like butter. I love how well this saw allows me to cut and hold the board due to it being lightweight compared to corded saws. This is my first battery powered circular and I'll probably not go back to corded. I do a ton of DIY building.
originally posted on Ace Hardware
This saw cuts effortlessly and is a power house. Used the 5.0 A battery with this and was impressed with the manageable weight and maneuverability. Great feeling handle, onboard wrench to change the blade and smooth adjustment features. I have to get used to the 0 cut line and blade kerf for precise cuts. When holding the saw in your right hand the blade is on the inside so you will get dusted - wish the blade was on the other side but not a deal breaker. Price was dirt cheap!
Dewalt 20v Cordless Circular Saw Dcs391 With 12v/20v Max Li Ion
Delivery $78.61
Affiliate Disclosure: We may receive a small commission for purchases made through this link at no extra cost to you. This helps support our site. Thank you!
After reading the other reviews for this saw, I took a chance, even though people's feelings were very obviously mixed. My basis for comparison are some ancient saws with only a couple horsepower and a really nice Bosch reman I use regularly, which was similarly priced when I bought it; this Ryobi stinks by comparison. I am saying POOR because I expect better performance from a low-end saw in this day and age, and I feel that the oomph put out by this is no better than the 30-year-old homeowner-quality Craftsman in my father's toolbox (I don't recall the HP rating of that one, sorry, folks). I'm disappointed with Home Depot for even putting this on the shelf and having the nerve to give only an RPM rating and amperage rating. That tells the buyer nothing about ... MoreAfter reading the other reviews for this saw, I took a chance, even though people's feelings were very obviously mixed. My basis for comparison are some ancient saws with only a couple horsepower and a really nice Bosch reman I use regularly, which was similarly priced when I bought it; this Ryobi stinks by comparison. I am saying POOR because I expect better performance from a low-end saw in this day and age, and I feel that the oomph put out by this is no better than the 30-year-old homeowner-quality Craftsman in my father's toolbox (I don't recall the HP rating of that one, sorry, folks). I'm disappointed with Home Depot for even putting this on the shelf and having the nerve to give only an RPM rating and amperage rating. That tells the buyer nothing about torque and horsepower. 5,000 no-load RPMs is a vague number because if the torque is low, 5,000 RPMs doesn't really mean anything. I found that this saw struggled with some 2"x6" Douglas Fir, and, although the lumber was a bit fresh, I really did find the saw's performance disappointing (also worth mentioning: I didn't even try the 20-tooth blade in the package, but, rather, I immediately upgraded to a combination blade from Irwin with 24 teeth). I will be returning this saw. Unfortunately, Home Depot is playing some kind of game where they don't physically stock in their stores all the same power tools they show online. So when I went to see my options in person, they were different from what I encountered on the website. I understand the business reasons behind this, but, sadly, I think this will be my last power tool purchase from Home Depot. I am really sorry to be giving such a negative review here--I own a great many of the cordless Ryobi 18V One+ line of tools, and I have been pleasantly surprised by their performance, which is the reason I tried this tool out in the first place. One final note of disappointment was that the laser guide needed calibrating out of the box, and, while this isn't a huge turnoff, it's also not a good thing. The manual explains how to correct this, but why would Ryobi box up a saw with a guide that isn't trued up? Why should I have to adjust that with a saw that's never been used? I didn't even find the guide helpful when it WAS straight. After maybe ten cuts, I decided it's going back in the box.
I was surprised how powerful this saw can be and how long it ran. This was, however, on the 20v 4AH battery. Use one of those and you'll be in love. I just cut about 20 times on some treated 2x10's and it was like butter. I love how well this saw allows me to cut and hold the board due to it being lightweight compared to corded saws. This is my first battery powered circular and I'll probably not go back to corded. I do a ton of DIY building.
This saw cuts effortlessly and is a power house. Used the 5.0 A battery with this and was impressed with the manageable weight and maneuverability. Great feeling handle, onboard wrench to change the blade and smooth adjustment features. I have to get used to the 0 cut line and blade kerf for precise cuts. When holding the saw in your right hand the blade is on the inside so you will get dusted - wish the blade was on the other side but not a deal breaker. Price was dirt cheap!
I used this saw to cut through a subfloor and remove large pieces. It has the power to do the work and would be perfect if you expect to use it infrequently (2-4 times a year). I wouldn't recommend it for someone that plans to use it for more then that as it's missing features that would be important, like the following.-Saw dust chute, it blows everything everywhere including your face.-No Light, when cutting you are most of the time leaning over it which casts a shadow and makes it hard to see the blade and the line.-Plastic Guard, given thickness of the guard it doesn't make me feel like it would survive a drop.My rating is based on this saw out of the DeWalt line and not peer brands.
First of all, I am a former professional wood worker and carpenter who owns a DeWalt 12" compound sliding bevel miter saw and a DeWalt contractor portable table saw but I decided on picking up some side jobs again so ive been tooling up my inventory. I have a classic corded 7 inch wormdrive Skillsaw that is my heavy duty work horse and goes through pressure treated lumber like butter but i needed a smaller lighter cordless saw for cutting hard to reach areas, elevated positions and some on the fly cutting where digging out the wormdrive beast is just too much. Being a user of Dewalt tools for years and having several drills on the 20 volt system i decided on going with the DCS391B model. In the past I had used my father in laws old 18Volt cordless DeWalt saw and it ... MoreFirst of all, I am a former professional wood worker and carpenter who owns a DeWalt 12" compound sliding bevel miter saw and a DeWalt contractor portable table saw but I decided on picking up some side jobs again so ive been tooling up my inventory. I have a classic corded 7 inch wormdrive Skillsaw that is my heavy duty work horse and goes through pressure treated lumber like butter but i needed a smaller lighter cordless saw for cutting hard to reach areas, elevated positions and some on the fly cutting where digging out the wormdrive beast is just too much. Being a user of Dewalt tools for years and having several drills on the 20 volt system i decided on going with the DCS391B model. In the past I had used my father in laws old 18Volt cordless DeWalt saw and it performed well enough although battery life was poor which i chalked up to an old 18volt battery which has shortened after years of use. I can attest that the lithium 20 volt battery system on my drills are awesome as they last through long hours of abuse and use and in addition after seeing so many good reviews on this saw i expected more than decent performance. i even got a great deal on two new 5 ah lithium batteries dedicated just for this saw but i was very disappointed after only 10 minutes with my new saw. As i began ripping through about 3 feet of 3/4" birch plywood the saw initially responded very well, smooth and sharp on the cut then after a few seconds or about the 4 foot marker the blade binded and stopped working. i flexed out the board to relieve the cut line and still no dice. changed out 3 different fully charged batteries and the blade couldn't even perform a small crosscut on soft 2x4 pine. i dont know if my experience is unique or what but there's no way that is normal for even the cheapest poor quality circular saw. a single rip cut through 4 feet of 3/4 plywood shouldnt throw the saw that out of whack. going to return it and get my money back. id like to think that maybe i purchased a defective saw and give it another try but the experience has left me with doubt. Makita and Milwaukee are a bit pricier but their tools consistently put out performance that seem to never fail.
Had a black&decker circular saw that I ran the socks off of, so it was time to replace it. My wife bought one of these for me for a Christmas gift. Yes, my wife bought me a power tool... and she's done that many times before... man, I did good!So, how did the step up to a Ryobi work out? Glad you asked. Originally, I had a problem with it, right out of the box. But I contacted Ryobi and they were LIGHTNING FAST at resolving the problem. That does my heart good, because so many of the other companies ignore you after they have your money. This is NOT the case with Ryobi. So that tells me that their 3 year warranty actually means something to them. That’s nice for a change!Now about the saw itself: The saw is a 14-amp model, which I think equates to about 2-1/4 ... MoreHad a black&decker circular saw that I ran the socks off of, so it was time to replace it. My wife bought one of these for me for a Christmas gift. Yes, my wife bought me a power tool... and she's done that many times before... man, I did good!So, how did the step up to a Ryobi work out? Glad you asked. Originally, I had a problem with it, right out of the box. But I contacted Ryobi and they were LIGHTNING FAST at resolving the problem. That does my heart good, because so many of the other companies ignore you after they have your money. This is NOT the case with Ryobi. So that tells me that their 3 year warranty actually means something to them. That’s nice for a change!Now about the saw itself: The saw is a 14-amp model, which I think equates to about 2-1/4 horsepower or so... which is plenty enough power. I ran it through some 3/4" cabinet plywood, and it ate it up quick. It was easy to guide, and didn’t have “a mind of its own”. It should have no problem with 2x4s and 4x4s.By the way, I noticed that it came with a really nice carbide tipped blade... sweet. I've purchased other saws that came with no blade, or with a blade not fit to cut butter with. So, my hat's off to Ryobi for giving me a blade that I can actually use.I'm not big on lasers for my power-tools, I guess I have trust issues with lasers, but this one seems to be right on the button.I did notice that the blade protector tucks itself out under the baseplate, even when the blade is in the highest retracted position. Therefore, I would suggest that you flip it up out of the way, before setting it down. Also, I would suggest that you NEVER lay the machine down while the blade is still spinning... for this same reason. I saw where a guy tore up his blade protector, and said that it just exploded on its own. I'm not buying that story. What most assuredly happened, and which happens with just about all the brands out there, is that he slug the saw down while the blade was still spinning away. The protection sleeve was then shoved into the spinning blade. These saws should be treated like precision tools, since the blade needs to be perfectly parallel to the baseplate! There is a right way to treat them.So, the real question is "would I buy again?" And the answer is: “In a split pico-second – yes I would buy again!” This saw is well-worth the price of admission.
Trigger is very stiff, and both the trigger and trigger lock buttons must be depressed very far to operate. Makes the tool a bit dangerous as some contortion is required to get it going. Maybe this one is worse than most and/or the trigger will loosen up over time. Would have expected more from "German engineering" though.Other than the above, seems to work well.
I am not a contractor, but I do lots of small home projects. I am also a big fan of Dewalt products, but am not sure how anyone could rate this one other than a one star. I purchased this for very small and quick projects. I attempted to test it out on cardboard and the saw stopped cutting about 6” in. I thought my battery was dead so I tried another. And then another. And then 2 more. I figured the saw had a defect and got another. New saw, same problems. All four batteries were fully charged. They have been recently used for a number of projects including some heavy duty projects. I proceeded to ask my neighbor to use his batteries as well just as a last resort in the event all of my batteries started failing at the same time. Still had the issues. Even without ... MoreI am not a contractor, but I do lots of small home projects. I am also a big fan of Dewalt products, but am not sure how anyone could rate this one other than a one star. I purchased this for very small and quick projects. I attempted to test it out on cardboard and the saw stopped cutting about 6” in. I thought my battery was dead so I tried another. And then another. And then 2 more. I figured the saw had a defect and got another. New saw, same problems. All four batteries were fully charged. They have been recently used for a number of projects including some heavy duty projects. I proceeded to ask my neighbor to use his batteries as well just as a last resort in the event all of my batteries started failing at the same time. Still had the issues. Even without cutting, you can hear the motor slowing down as you just run the blade without cutting something until it stops. DO NOT WASTE YOUR TIME ON THIS PRODUCT.
I just found out about DeWalt’s tool registration when I bought my newest tool, so now I’m coming back to review the great stuff I’ve had! This saw is amazing! I do Class 8 truck and bus maintenance as well as RVs. This saw was a purchase I have never regretted. It has floored many buses over the years cutting 3/4 plywood for hours on end without issue. The biggest complaint is that in order for this to really work you have to use the 5 AG battery. I bought it as a bare tool and instantly realized I needed those.I wish I could say I babied it, but it rides around in a service truck most of the time, its been left out, dropped, knocked off of tables and dropped off a 12’3” roof without damage. It has crossed over and done many RV repairs and never missed. If it ever ... MoreI just found out about DeWalt’s tool registration when I bought my newest tool, so now I’m coming back to review the great stuff I’ve had! This saw is amazing! I do Class 8 truck and bus maintenance as well as RVs. This saw was a purchase I have never regretted. It has floored many buses over the years cutting 3/4 plywood for hours on end without issue. The biggest complaint is that in order for this to really work you have to use the 5 AG battery. I bought it as a bare tool and instantly realized I needed those.I wish I could say I babied it, but it rides around in a service truck most of the time, its been left out, dropped, knocked off of tables and dropped off a 12’3” roof without damage. It has crossed over and done many RV repairs and never missed. If it ever quits I will absolutely buy a new one - and take better care of it thr next go around.
just a head's up: YOU NEED a 4 Ah battery to run it, cuz a 2 Ah batt will make it struggle even if its at 100% (you'll figure this out after a few cuts). it will, however, need a blade with more teeth for a better, smoother cut. even with the fat batt, weight is manageable, feels sturdy as you push thru material, cuz i beat the snot out of mine right out the box ripping plywood and 2x4 for a shed and a coop. so far so good. have to get out of the habit of rappelling the tool down by the power cord since it's cordless.
