DEWALT 20V MAX Circular Saw Cordless, Battery Not Included (DCS391B)

Quick answer

The DEWALT 20V MAX Circular Saw Cordless, Battery Not Included (DCS391B) is a practical choice for home workshops and DIY woodworkers who need a circular saws tool for the projects described below. It suits buyers whose work matches the features listed on the Amazon page, and it is worth skipping if your main job needs a different size, capacity or power source.

What this tool is

The DEWALT 20V MAX Circular Saw Cordless, Battery Not Included (DCS391B) is a circular saws tool for woodworkers, makers and DIYers in the United States. Its listing name tells you the most important facts before any review can: the brand is DEWALT, and the model details in the title are the ones to match against the Amazon page before you buy. That match matters, because similar-looking tools from the same brand can differ in size, power source and included accessories.

For a home workshop, the right question is not whether this is a good tool in general. It is whether it fits the boards you cut, the space you have, and the battery or power system you already own. The sections below walk through those checks in order, so you can decide with the listing open beside this post.

Key features from the listing

The manufacturer-listed features below are taken from the product listing for this exact model. Use them as a checklist, not as a promise about your own results, because results depend on material, blade or accessory condition, and technique:

• 5150 RPM motor delivers power and speed to make the most demanding cuts with ease
• High strength and lightweight magnesium shoe provides jobsite durability for long-term cut accuracy
• Optimized rubber over molded comfort grip delivers optimal balance and control
• 0-50° bevel capacity allows for aggressive bevel cuts for a multitude of applications

Read each feature against your own work. A feature that sounds impressive but does not match a job you actually do is not a reason to buy. A single feature that solves a repeated frustration in your shop often is.

How to choose the right one for your shop

The number that matters most on a compact or full-size circular saw is depth of cut at 90 degrees, because that decides what thickness you can cut in one pass. A small mini saw is made for thin stock, trim and tight spaces, while a 7-1/4-inch saw cuts through 2x lumber in one pass. Next, check power source: corded saws give continuous power, cordless saws give freedom but need a battery and charger on the same platform. Also check bevel range, laser or sightline to the cut line, dust control, and whether blades are easy to find in your area.

When you compare this model with others in the same category, compare like with like: same blade or bit size, same power source, and the same included items. A lower price with a missing battery, blade or stand is not the same deal as a complete kit, and a larger tool is not better if it does not fit your bench or your storage space.

Projects this tool fits

Circular saws cut sheet goods, shelving, deck boards, framing lumber, trim and panels. Mini and compact saws shine for small repairs, craft projects, cutting in tight spaces, and work on a ladder or in a finished room where a full-size saw is hard to control. Full-size saws are the right choice for framing, decking and repeated deep cuts.

Safety and setup checklist

Set the blade depth so only a small amount of tooth shows below the material, clamp the workpiece, and keep both hands on the saw with the cord or battery clear of the cut. Never cut freehand without a guide for a long straight cut, never reach under the guard, and let the blade stop before setting the saw down. Wear eye and hearing protection, and check for nails, screws and hidden wiring before cutting into an existing structure.

Before the first real cut, do a test cut on scrap material. Check that fences, guards and adjustments lock in place, that the blade or accessory is correct for the material, and that the workpiece is supported and clamped. A few minutes of setup on scrap saves ruined boards and, more importantly, avoids the rushed adjustments that cause most workshop accidents.

What to check before you buy

• Exact model: Match the model number in the title above with the model number on the Amazon page. Do not order by brand and category alone.
• Power source: Confirm whether it is corded or cordless, and if cordless, which battery platform and voltage it uses.
• Included items: Before ordering, check the Amazon listing’s included-items section carefully. Some listings include a blade, case, battery or charger and some do not, and that detail changes both the real cost and whether the tool is ready to use on delivery day.
• Size and capacity: Measure your bench, your storage space and the largest board you cut regularly, and compare those numbers with the listing.
• Blades and accessories: Check whether the blade, bit or accessory you need is included, and whether replacements are easy to find in the United States.
• Current price and delivery: This post states no price, because prices change. Check the Amazon page on the day you buy.

Who should buy it, and who should skip it

Buy it if: your projects match the category above, the size and power source fit your shop, you already own any battery or accessory it needs, and the features listed above solve a real job you do regularly.

Skip it if: you need a different size or capacity, you need a complete kit and this listing is a bare tool, your main job is in a different category, or the listing’s included items do not match what you expected. In that case, look at another model in the same category on this site rather than buying a tool that almost fits.

How it compares with other options

A mini circular saw is lighter, easier to control and less intimidating, but it trades away cutting depth and power. A full-size circular saw is heavier and louder, but it handles thicker stock and longer rips. The right choice is the one that matches the thickest material you cut regularly, not the smallest saw that can just barely make the cut.

Final verdict

The DEWALT 20V MAX Circular Saw Cordless, Battery Not Included (DCS391B) is worth considering if it matches your workshop, your projects and your power system, and if the listing’s included items are what you need. It is not worth buying on brand name alone, and it is not the right choice if a different size, a kit version, or a different category tool fits your work better. Open the listing, match the model number, check the included items, and then decide.