DEWALT ATOMIC 20V MAX* Circular Saw, 4-1/2-Inch, Tool Only (DCS571B)

(9 customer reviews)

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Brushless motor of DEWALT circular saw allows you to cut up to 369 linear feet of 3/4-inch OSB using DCB205 battery (sold separately) The cordless circular saw has the removable auxiliary handle for increased control The compact circular saw has a hang hook for increased convenience On-board blade key storage for hassle free blade changes 1-1/2-inch finger trigger allows users to choke-up on tool if necessary for their application Bevel gear allows users to cut 2x material at 90 degrees with a 4-1/2-inch blade Electronic blade brake stops blade quickly for safety and productivity
Bevel lever gives user the ability to bevel at 45 degrees to cut 1x dimensional lumber On-board dust port for dust control Show more

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SKU: B07VYLSYQ6 Category:

From the manufacturer



Part Number


Item Weight

‎6.6 pounds

Product Dimensions

‎17.88 x 5.13 x 6.69 inches

Item model number



‎1 Lithium ion batteries required.

Is Discontinued By Manufacturer






Power Source

‎Battery Powered


‎20 Volts

Item Package Quantity


Blade Length

‎2 Inches

Included Components

‎(1) DCS571 20V MAX* Brushless 4-1/2 in. Circular Saw; (1) Wood cutting blade; (1) Blade change key; (1) Dust port adaptor; (1) Rip fence

Batteries Included?


Batteries Required?




Customer Reviews

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Best Sellers Rank

#4,745 in Tools & Home Improvement (See Top 100 in Tools & Home Improvement) #3 in Power Circular Saws

Date First Available

September 10, 2019

9 reviews for DEWALT ATOMIC 20V MAX* Circular Saw, 4-1/2-Inch, Tool Only (DCS571B)

  1. Kaveh A

    Wow do I love this saw. I’m just a DIY’er, and everytime I get to thinking if I should buy a DeWalt table saw or miter saw to add to my arsenal of tools I use a few times a year but admire every time I’m in the garage, I keep falling back on the truth that I can do it all just about as easily on this little guy. Solid purchase.One note of caution, however.. for wood applications, don’t change the blade that comes with the saw. I saw a video review that said you should change the blade before you do anything else. I did, and it was definitely for the worse. I thought it was the saw, but then I had a hunch to change the blade back, and wow, what a difference! The number of teeth on the blade that comes with the saw is not too few and there isn’t any tear-out using it. The 120-tooth blade I was told would be better only slowed the saw down and even caused wood to bind when doing bevel cuts on hardwoods.

  2. Bill D.

    I’ve been surprised by how often I use this saw instead of a circular saw for quick cuts. After I received it, I made some test cuts on scrap 2×4’s to see how this saw compares to a full-sized circular saw. I expected this saw to bog down a little compared to the larger saw. Amazingly, it sliced through framing lumber like butter. In fact, the full-sized cordless circular saw struggled a little more than this mighty micro saw. I’m guessing the difference was caused by a dull blade on the circular saw, but the fact that the little saw had zero trouble doing the same tasks as its big brother came as a big surprise. This thing might look like a toy at first glance, but don’t let appearances fool you. This is a full-blown power tool which will handle 95% of the tasks full-sized circular saws perform. The only difference is a reduced depth of cut, due to the smaller blade size. Otherwise, it has handled everything I’ve tried. I’m really impressed. Give it a try.

  3. M. Mills

    I bought this for a very specific purpose that many “purists” will probably flip out about. I bought this to cut DRYWALL. Yes i said it DRYWALL. I use a 120 tooth plywood blade (noted below), I place my drywall sheets on a sacrificial piece of EXS foam board, attach a small shop vac and bam! REALLY FAST SUPER CLEAN CUTS with Very LITTLE DUST! I am using this with 4AH batteries and I am having to swap them every couple hours or so but I have a ton of Dewalt 20v tools so i am pretty well set up with batteries. This method makes long and even complicated cuts super accurate and easy. I can make cuts in less then a third of the time it used to take me with a knife.

  4. Joe

    Love this little saw, Nice and handy well-built I just wish they make a dust bag for it I have search for days can I find one I guess I have to wait when Available… De Walt makes a great line of tools

  5. Yonder

    Great addition to my 20V MAX collection. I’m a professional carpenter. Heavier than expected but that may give it better stability and accuracy in the long run

  6. Steve L.

    A traditional circular saw can can only cut. For smaller projects, a 4 1/2″ circular saw can not only cut, but it can maneuver and get into places a larger saw can’t fit. Unfortunately, until recently, the only small battery-powered saws on the market were too under-powered to be of much use to all but hobbyists. The addition of a cord, however, prevents the saw from being taken where it would be most useful. For years I waited for DeWalt to manufacture this saw and now that it’s here, I’m not disappointed. This is the first battery-powered small circular saw that’s as powerful as a corded unit. It doesn’t take long to run through a 5 volt battery, though, but it’s still a lot easier to carry a few batteries to a project than to bring the project to a power outlet.

  7. David Holman

    A guy I worked with bought this saw a couple of months back, and I immediately looked at it as a waste of $$. Why would one need a 4.5″ circular saw, when we already have our 7.5″ saws on hand? Over the next month I found myself asking him to borrow it more and more often for all sorts of little tasks. It didn’t take me long to realize that this saw is extremely handy to have around, and about a month ago I bit the bullet and bought my own. I have snce found that I use this saw more than I use my 7.5 inch saw now.We do primarily finish work, though we do some framing as well. When there’s 2x lumber and up, I will generally still turn to my big saw, but everything else that needs to be cut, gets cut with this little guy. Plywood, sheathing, decking, azek, cutting down doors all get done with my 4.5 inch these days. I even flip the blade around and cut vinyl siding when the situation is called for. I usually use one of my 6ah batteries with this saw though I’ve used my 3s as well and it made all the cuts i needed it too that day. The hook on it is a great addition as well. So far, I’ve been very satisfied with this purchase, and considering I own all Dewalt tools, I have a feeling I will continue to be satisfied as well.

  8. gwiz

    I wasn’t real sure how useful this saw was going to be but Wow! I use it all the time for rough cutting 2x lumber and all thicknesses of plywood and MDF. The original blade cuts very smoothly and replacements are available at the local home stores. Batteries last a good while and it doesn’t require the 60v ones although they will work. Easy to use with one hand and a speed square in the other. Im very happy with this saw and would buy it again.

  9. A&K

    I bought this to rip some fence panels and it works great. It is easy to keep on track and make very accurate cuts with. My only complaint is that it will eat up some juice on your batteries. I only have 1.5 Amp hour batteries and I can only cut about 3 boards at a time. I ordered some bigger batteries for it.Update Oct 2020: I bought these generic 4ah batteries and get plenty of runtime now. Not sure how long it lasts but I have never run out of juice in the middle of a cut with these bigger batteries.Update Feb 2021. Still love this thing. Do yourself a favor and buy a Diablo blade. You can get much smoother cuts all while cutting as good or better.

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