DEWALT DCS391B 20-Volt MAX Li-Ion Circular Saw Review

If you own a home or plan to buy a house someday, you need power tools – especially a circular saw. And to make sure you get the right tool the first time, you should consider the DeWalt DCS391B 20-volt Max Li-Ion Circular Saw. With DeWalt's trusted craftsmanship, a 6 1/2" carbide blade, and powerful motor, you'll be able to rip through anything that needs cutting in no time.

In this review, I'll go over the features that make this DeWalt saw better than its competitors. I'll also point out tips and concerns to help you make the best power tool choice possible.​

Powerful 460 Max Watts Out (MWO) and 5250 Revolutions Per Minute (RPM) Motor

DeWalt created this 20-volt circular saw with a powerful 460 MWO and 5250 RPM motor to help you make tough cuts. The company also added a stop brake to help keep you safe. What this means is even though the saw has a powerful motor, as soon as you let the trigger go, it stops running. This safety feature allows you to remain safe and feel confident when using the tool.

High Strength and Lightweight Magnesium Shoe

To make this DeWalt circular saw extremely durable, a high strength, lightweight magnesium shoe has been added. The addition of this feature ensures the saw will create long-term accurate cuts time and time again. The fact that this shoe is lightweight also increases its usability because it won't weigh you down when it's in operation.

DEWALT DCS391B 20-Volt MAX Li-Ion Circular Saw Review - High strength, lightweight magnesium shoe allows you to make highly accurate cuts

The high strength, lightweight magnesium shoe allows you to make very accurate cuts.

6 1/2 Inches Carbide Blade With 5/8-inch Arbor

DeWalt wants buyers to use their tools, so they make them practical. The DCS391B is extremely practical with a 6 1/2" carbide blade. Replacing the blade is also easy because it has a 5/8" arbor.

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DEWALT DCS391B Review - Practical 6 1/2 inches blade

Practical 6 1/2" carbide blade allows for easy replacement with its 5/8" arbor

0 to 50-Degree Bevel Capacity

The 0 to 50-degree bevel capacity allows users to locate and cut angles easily. With this saw, you'll be able to create anything from 50-degree angles or difficult 90-degree perpendicular cuts. The depth of the cut at 45-degrees is 1 5/8". At 90 degrees, the depth of the cut increases to 2 1/4". With a variety of available angle cuts, you'll be hard-pressed to find anything you can't cut exactly the way you want to.

DEWALT DCS391B 20-Volt MAX Li-Ion Circular Saw Package Details and Accessories

  • Bare tool item (comes with no accessories)

Check out this DEWALT DCS391L combo kit at Amazon if you're looking for a bundle package that includes a 6.5-inch circular saw (460 MWO, 3700 RPM), one 20-volt max 3.0 Ah lithium-ion battery, one fast charger, one 6.5-inch carbide-tipped blade, and one hard plastic storage and carrying case.

Just take note that the circular saw in the above-mentioned DCS391L combo kit has a lower RPM (3700 RPM) as compared to the 5750 RPM available in the DCS391B unit that you're currently viewing.

DEWALT DCS391B 20-Volt MAX Li-Ion Circular Saw Review - Use the saw to create anything from difficult 90-degree perpendicular cuts to 50-degree angles

Create anything from 50-degree angles or difficult 90-degree perpendicular cuts


This DeWalt 20-volt circular saw measures 8.5 x 5.5 x 10.5 inches and weighs 2 lbs.


  • Lithium Ion battery-powered
  • Rubber over molded handle
  • Stop brake
  • 5/8" arbor size
  • Features LED lights
  • Certified frustration-free
  • Can be used with any 20-volt DeWalt charger


  • Lithium Ion batteries are not included with purchase (unless you purchase the combo kit)
  • Requires at least a 3.0Ah battery charger (4.0Ah or 5.0Ah charger is preferable)
  • 1.5Ah DeWalt Charger will not be powerful enough to charge the saw for long periods of time

Consumer Ratings

Amazon Customer Reviews: Click Here

Overall, the ratings for this DeWalt 6 1/2" circular saw have been very positive at many independent review sites. With many past purchasers giving the tool a big thumbs up, you can be assured that your purchase will not be a waste of money. The majority of complaints about this power tool are directly related to the how long the battery lasts. As this is just sold as a bare tool, it doesn't come with Lithium Ion batteries or a charger. Both of these items are needed to operate the saw.

​It appears the reason some users feel the battery doesn't last an appropriate time is because they're using chargers that aren't powerful enough for the tool. DeWalt recommends that nothing less than a 3.0AH charger is used with this model. Ideally, a user should invest in a 4AH or 5AH DeWalt charger for best results.

If you're ordering this DeWalt saw as a present for someone in your household, you'll need to make sure you get home before they do on the day it's delivered. The saw is visible when shipped, so it leaves nothing to the imagination and can ruin a great surprise if the intended gift recipient sees it first.​

DEWALT DCS391B 20-Volt MAX Li-Ion Circular Saw Price

Today's Price: Click Here


If you're looking for a powerful tool from a brand you can trust, you'll love the DeWalt DCS391B 20-volt Max Li-Ion Circular Saw. The saw is easy to use, tough enough to make deep cuts, and will help you get jobs done like a pro. At such a reasonable price, you won't regret adding this circular saw to your collection of tools.

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