Dewalt DCS391B 20V MAX Cordless Lithium-Ion 6-1/2 in. Circular Saw (Tool Only)

Model: dewndcs391b
ratings        (139) Write A Review
Price reduced from $129.00 to Save 23% $99.00
free shipping
This item qualifies for
free shipping

Estimates For

alert warning icon

  • In Stock


CA Residents
Prop 65 Warning
compliance warning icon
WARNING: This product can expose you to Lead, which is known to the State of California to cause Cancer and Birth Defect/Reproductive Harm. For more information go to
Dewalt DCS391B 20V MAX Cordless Lithium-Ion 6-1/2 in. Circular Saw (Tool Only) Model: dewndcs391b
price for vip customer
Price reduced from $129.00 to Save 23% $99.00


Product Features & specs :

Dewalt DCS391B 20V MAX Cordless Lithium-Ion 6-1/2 in. Circular Saw (Tool Only)

The DCS391B 20V MAX 6-1/2 in. Circular Saw with a 6-1/2 in. carbide tipped blade operates on a powerful 5150 RPM motor with a 0 to 50-degree bevel capacity on a lightweight and durable magnesium shoe.
  • Powerful 460 MWO, 5,150 RPM motor delivers power and speed to make the most demanding cuts with ease
  • Optimized rubber overmolded comfort grip delivers optimal balance and control
  • 6-1/2 in. carbide-tipped blade for cutting 2 times material at 90-deg. and 45-deg. and more cuts per charge
  • High strength and lightweight magnesium shoe provides jobsite durability for long-term cut accuracy
  • 0-50-deg. bevel capacity allows for aggressive bevel cuts for a multitude of applications
What’s Included:
  • 20V MAX Cordless Lithium-Ion 6-1/2 in. Circular Saw - DCS391B
  • Tool Only - Batteries and Charger Sold Separately
8.5 in.
15.5 in.
10.5 in.
7 lbs.
Arbor Size
5/8 in
Batteries Included
Battery System
Battery Type
Bevel Capacity
0-50 Degrees
Blade Diameter
5-1/2 in
Blade Position
Bluetooth Compatibility
CSA Safety
Case Included
Charger Included
Depth Adjustment
Depth of Cut (45 Degrees)
1-5/8 in
Depth of Cut (90 Degrees)
2-1/4 in
ETL Safety
Keyless/keyed Blade Change
Keyed Change
Motor Type
No-Load Speed (SFM)
Power Source
UL Safety
Wifi compatibility

Reviews :

4.7 / 5.0
104 Reviews
5 Stars
4 Stars
3 Stars
2 Stars
1 Star
Would you recommend this product?
Yes (86)
Easy To Use (80)
Powerful (72)
Value (1)
Battery Longevity (if applicable) (1)
Best Uses
Home Repair (51)
Small Projects (2)
Jobsite (1)
Good saw
Plenty of power. No problem cutting 3/4" sheet goods.
January 21, 2020
I am very happy with my purchase.
May 23, 2019
Would you recommend this product?
Easy To Use
Battery Longevity (if applicable)
Best Uses
Small Projects
Home Repair
6 1/2 in 20 volt circular saw
Light, quick, and great for small jobs
February 17, 2019
1 year ago
Describe Yourself:
Avid Do-it-Yourselfer
Dewalt DCS391B 20V MAX Cordless Lithium-Ion 6-1/2 in. Circular Saw
used for shop, dimensional lumber cutoff, ripping, smooth easy cutting with new blade. Plastic guards, metal shoe, reliable and more durable than similar but 1 inch smaller Porter Cable.
December 8, 2018
well engineered saw that makes it easy to cut
Light and powerful, I really am impressed with its cutting ability.I am a carpenter with 40 years working with the trade, and don't impress easy.
December 6, 2018
I’m old school, but decided to give this a shot and am I tickled I did! It’s a great, powerful,super handy circle saw. I bought the 6 amp batteries and it will last all day on one battery. Built a fence cutting pickets (100) and 2x6’s - NO PROBLEMS!!!!!!
February 7, 2018
Great tool, just what I great for jobs with no power on it.easy to use, no problems what so ever. Also good for use when a big saw is not needed.
April 27, 2017
This cordless saw works great for small to medium projects. My 4 amp hour battery was able to cut about 20 2x6 studs before it needed to be charged. Pretty decent little saw for the money.
March 17, 2017
What I expected
Seems to work pretty good not a lot of power but enough for small jobs
December 15, 2016
What I expected
Seems to work pretty good not a lot of power but enough for small jobs
December 15, 2016

Q & A :

Start typing your question and we'll check if it was already asked and answered. Learn More
Browse 13 questions Browse 13 questions and 25 answers
Does this saw include the blade?
John on Apr 19, 2016
BEST ANSWER: Yes, it comes with a framing blade.
Will 1.5 amp batteries run this saw or do you need 3amp?
hydro on Apr 6, 2016
BEST ANSWER: I used my existing 1.5 mah and it held its own on 1/2 plywood but I
immediately decided 3.0 mah would be a match and ordered two. If you have
2, 1.5's you'll be ok for the moment unless cutting 2x4, 2x6 continuously.
I have a he dewaltt DW 936 18 volt trim saw and wanted to purchase this also, but wondered if this saw is also a trim saw,nor more of a heavier duty saw.
Captain D on May 23, 2016
BEST ANSWER: This saw is heavy duty enough for most general jobs.
Will a 20 volt 1.3ah battery work in this saw. Those are the batteries that came with my impact driver.
Captain D on May 23, 2016
BEST ANSWER: Yes, all of the 20V MAX batteries are interchangeable.
will the saw cut ipa wood successfully?
Honey on Jun 24, 2015
BEST ANSWER: Yes, it will work on IPE wood.
Is this a 1.5 amp or 3 amp saw?
M on Oct 17, 2012
BEST ANSWER: The 20V MAX Cordless Lithium-Ion 6-1/2-in Circular Saw being offer is model DCS391B, the 3.0 amp model. The 1.5 amp is a different model number.
Do you ship to Maldives?

Thsnk you
Musa663 on Jun 2, 2016
BEST ANSWER: CPO only ships within the United States at this time.
Will a 20v Max Llithium ION 1.5 AH Dewalt battery that is the battery used in my Dewalt 1/4" 20v Max Cordless Impact Driver work with this saw?
Tom on Jan 20, 2016
BEST ANSWER: Yes, a Dewalt 20v 1.5 ah battery will work with Dewalt's 20v impact driver.
What are the max RPMs? It is listed under details as 3700 and under specs as 5250.
Johnny O' on Dec 11, 2015
BEST ANSWER: The max rpms is 3700.
will this saw work with the 3amp lith-ion batt?(20v)
g-man on Apr 16, 2014
BEST ANSWER: Yes, a 3 Ah battery will work fine with this saw.
kenny on Oct 21, 2013
BEST ANSWER: We do not stock parts here in our warehouse. You can contact DeWalt directly at 1-800-433-9258.
Is there a difference if I use Max XR Li-on 2.0 or 4.0 amp battery on this saw?
Thank you
Tom on Aug 9, 2013
BEST ANSWER: No, you can use either battery with this saw. The only difference is the 4.0 AH battery will run longer.
Can I use 20v max XR li-on on this saw?
Thank you
Tomvi on Jul 7, 2013
BEST ANSWER: Yes, the XR batteries can be used with this saw.


Most DEWALT® Tools purchased on or after January 1, 2004 come with a warranty package that includes:

Three-Year Limited Warranty. DEWALT will repair, without charge, any defects due to faulty materials or workmanship for three years from the date of purchase. This warranty does not cover part failure due to normal wear or tool abuse. For further detail of warranty coverage and warranty repair information, visit or call 1-800-4-DEWALT (1-800-433-9258). This warranty does not apply to accessories or damage caused where repairs have been made or attempted by others. This warranty gives you specific legal rights and you may have other rights which vary in certain states or provinces.

One-Year Free Service Contract. DEWALT will maintain the tool and replace worn parts caused by normal use, for free, any time during the first year after purchase.

90-Day Money Back Guarantee. If you are not completely satisfied with the performance of your DEWALT Power Tool, Laser, or Nailer for any reason, you can return it within 90 days from the date of purchase with a receipt for a full refund - no questions asked.