US
DeWalt

DEWALT DCS578B FLEXVOLT Circular Saw with Brake 7-1/4 Inch

  • 60 volt, battery powered
  • 1,700 watts listed power
  • 5,800 RPM speed
  • 7.25 inch listed capacity
  • 8.2 pounds, high speed steel blade

Last refreshed Aug 4, 2026 · Based on the Amazon listing and published specifications, not hands-on testing.

Our verdict

A powerful cordless DeWalt saw with a high speed rating. Battery inclusion and saw type are not spelled out.

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ASIN: B086MF32GRModel: DCS578BCategory: Saws

Overview

A rechargeable pack feeds a high wattage motor that turns a high speed steel blade at a fast rate. The listing gives a capacity and weight but never states the saw type.

High power and speed let the saw work through thick stock without a cord. The model is sold as a battery powered tool and the listing names no battery. The capacity figure gives a rough idea of cutting reach.

Who it's for

Framers and remodelers who cut lumber on site without outlets will like the speed and power. Anyone wanting a complete kit should check what ships with it before buying.

Pros and cons

Pros
  • High listed power and speed
  • Cordless for job sites
  • High speed steel blade material
  • Capacity for thick stock
Cons
  • Battery and charger not listed
  • Saw type not stated
  • Heavy for long overhead use
  • Blade size not given

Performance notes

Blade speed and motor wattage set how smoothly it holds speed under load. Runtime depends on the battery capacity chosen. Thick stock needs slow feed to avoid stalling.

Specifications

BrandDeWalt
ModelDCS578B
Dimensions & fit
Item weight8.2 Pounds
Capacity & performance
Capacity7.25 Incheshigher than 63% of 55 saws
Speed5800 RPM
Power1700 watts
Power & efficiency
Power SourceBattery Powered
Voltage60 Voltshigher than 53% of 197 saws
Construction & materials
Blade MaterialHigh Speed Steel

Closest rivals on specs

M18 2630-20 Cordless Circular Saw 6-1/2 Inch
  • Voltage 60 vs 18 volts (+233%)
  • Item Weight 8.2 vs 7.28 pounds (+13%)
SKIL PWR CORE 20 CR6413B-11 Compact Circular Saw Kit
  • Voltage 60 vs 20 volts (+200%)
  • Capacity 7.2 vs 6.5 inches (+11%)
Compare all side by side

Frequently asked questions

What does the 7.25 inch capacity of the DeWalt DCS578B mean?

The listing gives the figure without a label. It likely describes cutting reach, but check the manual.

Does the DeWalt DCS578B include a battery?

The listing does not name a battery or charger, so assume they are separate.

How heavy is the DeWalt DCS578B?

The listing gives 8.2 pounds.