DEWALT 20V MAX Circular Saw, Cordless Sidewinder Style Portable, 6-1/2-Inch Blade, 5150 RPM, 0-50 Degree Bevel Capability…
Best for
Best for existing DeWalt 20V owners
Amazon rating
Amazon aggregate, one input among many in the Verdict Score
Based on 1 trusted source
Current price
$129.00
Updated Jun 27, 2026 · 1 min read
Sources behind this verdict
10 reviewers weighted by source trust
The consensus
What reviewers found
Synthesized across the trust-weighted source mix below.
Across the reviewers we read, the brushed DeWalt DCS391B is the long-running, hugely popular workhorse of the 20V MAX lineup, with more than 11,000 Amazon reviews at a 4.6 average. Retailer summaries from Lowe's and Home Depot describe it as lightweight, easy to handle, and well-suited to small-to-medium DIY projects with ample power for common materials. High-trust r/Tools sentiment is positive but realistic: one owner reports getting "30 or so cuts on 2x4 with a 5Ah battery before bogging down" and would not cut anything heavier than 2x or plywood with it.
What reviewers liked
- Enormous 4.6/11063 verified-review base signaling proven reliability
- High-trust community confirms clean, accurate cuts with a good blade
- Inexpensive, lightweight, and works across the whole 20V MAX battery range
Where it falls short
- Brushed motor bogs down under sustained load on smaller batteries
- Stock blade doesn't deliver the cleanest cuts
- Older design lacks brushless efficiency and runtime
Embed our score
Sell this product? Show off the rank.
Free badge for the brand, retailer, or anyone covering this product. Copy the snippet and paste it anywhere HTML works. Updates automatically when the ranking changes.
Includes a credit link back to this page. No tracking; no JavaScript.
Across the reviewers we read, the brushed DeWalt DCS391B is the long-running, hugely popular workhorse of the 20V MAX lineup, with more than 11,000 Amazon reviews at a 4.6 average. Retailer summaries from Lowe's and Home Depot describe it as lightweight, easy to handle, and well-suited to small-to-medium DIY projects with ample power for common materials.
High-trust r/Tools sentiment is positive but realistic: one owner reports getting "30 or so cuts on 2x4 with a 5Ah battery before bogging down" and would not cut anything heavier than 2x or plywood with it. r/Dewalt contributors note it cuts "clean and accurately" when paired with a good 40-tooth blade and that it pairs well with anything from small drill batteries to FlexVolt packs for more grunt.
The cons are the predictable brushed-motor tradeoffs: it bogs under sustained load, the stock blade doesn't produce the cleanest cuts, and reviewers stress matching battery size to the task. It's an aging design without brushless efficiency, but its ubiquity, low price, and platform compatibility keep it a default recommendation for existing DeWalt owners.
- 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 of electric saw for wood cutting
- 0-50° bevel capacity allows for aggressive bevel cuts for a multitude of applications
- 6-1/2 inch 18-tooth carbide-tipped blade included for cutting 2 times material at 90° and 45° and more cuts per charge. Maximum cut depth @ 90°: 2-1/8 inches (2.125 in). Maximum cut depth @ 45°: 1-5/8 inches (1.625 in)
- 3 Year Limited Warranty
- Keyless blade change, spindle lock
- Ideal as woodworking tool and construction jobs requiring portability and precise cuts
I love mine. It's the original brushed model. I pair it with whatever size battery represents the type or amount of work I'm doing. Generally I ...
blade works pretty great. Cuts clean and accurately in a lightweight package. The small batteries from my Dewalt drill also work great.
Trust tier reflects our editorial assessment of the source, not the individual quote. Hover for the rationale. See how we tier sources →
“NEW DeWalt Circular Saw Review! 20V Max DCS590 *TESTED” · YouTube
If the consensus convinced you
Check current price on Amazon
Pricing and availability change frequently. Tap through to confirm before buying.