DEWALT 20V MAX Circular Saw (DCS391B)

One-line verdict

Ideal for DIY homeowners and light trades entering DEWALT ecosystem, offering compact portability at cost of limited power for heavy ripping.

How it compares

• vs DEWALT 20V MAX Compact Reciprocating Saw DCS369B ($119–$139): circular saw wins on versatility for sheet goods and straight cuts, reciprocating saw wins on access in tight spaces and one-handed maneuverability
• vs DEWALT 20V MAX Cordless Drill/Driver Kit DCD771C2 ($90–$150): circular saw wins on dedicated cutting performance, drill/driver kit wins on overall value with two batteries and charger included
• vs DEWALT 20V MAX XR Oscillating Multi-Tool DCS356B ($120–$190): circular saw wins on speed and efficiency for long straight cuts, multi-tool wins on versatility across sanding, scraping, and detail cuts
• vs SKIL PWRCORE 20V 2-Tool Combo Kit ($140–$170): circular saw wins on brand ecosystem depth and resale value, SKIL combo wins on out-of-box tool count and fast charging convenience

AI-summarized review themes

Frequently Praised

• Lightweight design reduces fatigue during overhead trim work
• Comfortable rubber grip improves control on extended sessions
• Quick blade brake enhances safety and blade changes
• Sufficient power handles plywood sheets and 2x4s cleanly
• Durable magnesium shoe withstands regular jobsite drops

Frequently Criticized

• Brushed motor bogs down on thick lumber or long rips
• Bevel adjustment screw difficult to access precisely
• Small 6-1/2-inch blade limits depth on dimensional lumber
• Plastic lower guard feels cheap and binds occasionally
• Poor dust port fails to extract effectively even with vacuum

Best for

trim carpentry, plywood breakdown, occasional framing, weekend DIY projects

Not for

full-sheet ripping, daily heavy construction, precise angle production cuts

Specifications

Spec	Value
Battery Voltage	20V MAX
Motor Type	Brushed
No-Load Speed	5150 RPM
Blade Size	6-1/2 in.
Bevel Capacity	0-50°
Depth of Cut @90°	2-1/4 in.
Depth of Cut @45°	1-5/8 in.
Weight (tool only)	~7.6 lbs
Blade Brake	Yes
Platform	DEWALT 20V MAX

Data sources

• Estimated ~12000 purchase reviews via Amazon, Home Depot, Lowes
• Review period: 2012–2026
• Sentiment confidence: high