#1 Home Improvement Retailer

Internet # 204311271

Model # DCB204

Top Rated

20V MAX Premium Lithium-Ion 4.0Ah Battery Pack

Contains 4 Amp Hour
$76.65
($19.16 /amp hour)
Apply Now
Pay $51.65 after $25 OFF your total qualifying purchase upon opening a new card. 
Apply for a Home Depot Consumer Card
  • Compatible with the entire line of DEWALT 20V MAX tools
  • 4 Ah high-capacity lithium-ion battery weighs just 1.42 lbs.
  • 3-light LED fuel gauge indicates charge status
  • View More Details

Free & Easy Returns In Store or Online

Return this item within 90 days of purchase.

Read Return Policy

Ask about this product

Get an answer now with AI

Magic Apron Assistant is an AI virtual assistant. By proceeding, you consent to the recording and use of your information by The Home Depot (and authorized third parties). More information

Product Details

About This Product

The 20V MAX Premium lithium-ion battery outperforms every DEWALT battery that came before it and that's saying a lot. Get long-lasting power and prolonged life from this 4Ah battery that weighs just 1.42 lbs. A built-in charge meter lets you know how much juice remains so you don't get caught powerless on a job site.

Highlights

Product Information

Internet # 204311271

Model # DCB204

Additional Resources

Shop All DEWALT
From the Manufacturer

Specifications

Dimensions: H 3 in, W 7 in, L 7 in

Dimensions

Product Height (in.)

3 in

Product Length (in.)

7 in

Product Width (in.)

7 in

Details

Battery Power Type

Lithium Ion

Battery Voltage (V)

20V

Charge time (min.)

60

Charger Included

Charger Not Included

Color Family

Yellow

Individual Battery Weight

1.4 lb

Number of Total Batteries Included

1

Power Tool Accessory Type

Battery

Power Tool Features

No Additional Features

Rechargeable

Yes

Returnable

90-Day

Used with Equipment Type

Drill, Sander, Saw

Questions & Answers

Can I use this saw on track for cut the wood?
BySep 6, 2026
1 Answer | 
Answer This Question

The DCS391B is not designed as a track saw, so it does not natively run on a track system by itself. However, it may be used with a straight edge guide or certain compatible aftermarket adapters, depending on the setup you are using.

By|Sep 11, 2026


    Does it come with a blade
    ByAug 31, 2026
    1 Answer | 
    Answer This Question

    Yes, it does.

    By|Sep 3, 2026


      What battery fits this saw
      ByJul 8, 2026
      1 Answer | 
      Answer This Question

      The DCS391B circular saw is compatible with all DEWALT 20V MAX lithium-ion batteries, including standard, XR, and FlexVolt (20/60V) batteries.

      By|Jul 8, 2026


        What is the maximum cutting depth
        ByJun 28, 2026
        1 Answer | 
        Answer This Question

        The DCS391B cut depth with a 6-1/2" blade is approximately 2-1/8" at 90-degrees.

        By|Jul 21, 2026

          (1)

          Is it brushless
          ByJun 24, 2026
          1 Answer | 
          Answer This Question

          The DCS391B is not brushless.

          By|Jun 25, 2026


            Can it cut a concrete groove?
            ByJun 24, 2026
            1 Answer | 
            Answer This Question

            No, the DEWALT DCS391B is designed for wood and similar materials, not concrete.

            By|Jun 24, 2026


              Is the dust bag included
              ByJun 18, 2026
              1 Answer | 
              Answer This Question

              No, it's not.

              By|Jun 18, 2026


                Is this battery made by DeWalt or by an aftermarket manufacturer?
                ByMay 5, 2026
                1 Answer | 
                Answer This Question

                The DCB204 is an original DEWALT battery.

                By|Aug 8, 2026

                  (1)

                  Viewing 1-8 of 380

                  Customer Reviews

                  4.5 out of 5

                  • 4.5 out of 4,489 reviews
                  • 90% recommend this product
                  Filter by:
                  Showing 1-10 of 4,489 reviews
                  DeWalt makes some fantastic products. These batteries do not disappoint because they last a long time and go with my vacuum cleaner, drill, and recently purchased pruner for my yard. They can be a little expensive, but if you catch them on sale, they are some of the best batteries out there. You can often find them on special at Home Depot. They are interchangeable among several tools that DeWalt makes.
                  by
                  I am a huge DeWalt fan. I find all of their tools to be very reliable and powerful. And so I've aquired a LOT of DeWalt batteries, from 1.5 A to dual-voltage 9 A. And what I've found is that the 4A hits the sweet spot between being too small to run heavier tools (like a chainsaw or grinder) for any reasonable amount of time, and being so big and heavy that it's tiring to use. For 90% of what I do, the 4A gives me plenty of torque and run-time without being too heavy.
                  by
                  This product works very well. I used it for wheel bearings and had no issues. It was very easy to blend the air out of it and fit a grease tube well. Just make sure to have rubber plunger fight way for tube or drum grease which is in the instructions. Mine was set up for tube out of box.
                  by
                  1 found this review helpful
                  I wish Dewalt had come out with this adaptor years ago. It is a great way to keep your old tools going.
                  by
                  1 found this review helpful
                  The features that stand out for the DeWalt 20v cordless circular saw, lightweight, easy to maneuver. The sidewinder feature gives better view point for more accurate cut. easily apply guide for ripping. Doesn’t bind as often due to good cutting power. I have had it a little over two months and would recommend.
                  by
                  2 found this review helpful
                  Great tool to have. It is light weight, well balanced and cuts through thick wood with great ease. What makes it especially easy is that the saw is cordless. No need to look for an outlet, just saw wherever you need it. This tool came without a battery, but you anyway want two batteries at least to make sure you always have a spare. There is nothing more annoying than having to wait for a battery to charge halfway through project. All and all I am happy with the purchase.
                  by
                  This saw is great, the power is great and it’s not too heavy. It’s so easy to grab and cut when you need something fast. I would definitely purchase again! Battery holds power for a long time and cuts great!
                  by
                  2 found this review helpful
                  Reliability questionable
                  This battery came with my trimmer/blower combo purchased in March of 2025 and now 8 months later if I use my DCB1104 or my newer DCB118 chargers it says fully charged but when I press the battery button only 2 bars of 3 show no matter how long I let the battery sit on the charger.
                  by
                    Great Saw
                    Bought this and already loving it. First circular saw and super easy to use. Learning a lot with it already and trust it. Did 2 projects and already wanting to get more done. A must have.
                    by
                      • Recommended
                      2 found this review helpful
                      Need better instruction manual!
                      Saw may be good for the price and I’m a looking forward to using it…BUT the instruction manual is pretty much worthless. They need MUCH better instructions on how to change the blade and operation. The illustrations need to be on the same page as the words. Will probably have to find a YouTube video. Really, they should do better!
                      by
                      Response from DewaltProductExpertMar 12, 2026
                      Hello. Thank you for taking the time to provide your feedback. I'm sorry you weren't pleased with the DCS391B. Your feedback is valuable as we take into consideration every piece of feedback that we come across. I will pass this along to our team for review. It is feedback like yours that allows us to make improvements. Thanks, DEWALT Social Media Team
                        • Recommended
                        Showing 1-10 of 4,489 reviews

                        Compare Key Features

                        current item

                        Product Snapshot

                        Ideal for customers who want long-lasting 20V power, ensuring MAX productivity on job sites.
                        Ideal for customers who want extended run time, ensuring maximum productivity.
                        Ideal for customers who want long-lasting 20V power, ensuring reliable performance.
                        Ideal for customers who want extended run time, ensuring MAX productivity.

                        Voltage

                        20V
                        20V
                        20V
                        20V

                        Capacity

                        4 Ah
                        5.0 Ah
                        4.0 Ah
                        6.0 Ah

                        Battery Type

                        Lithium-Ion
                        Lithium-Ion
                        Lithium-Ion
                        Lithium-Ion

                        Charging Time

                        60 min.
                        90 min.
                        90 min
                        60 minutes

                        Run Time

                        Long-lasting power
                        Extended for longer use
                        Extended run time