DEWALT DCS566 20V Circular Saw, 20V Cordless Brushless 6.5 inch
✅ PROS
- 11.2 lbs with battery — noticeably lighter than full-size 7-1/4 inch " saws, reduces fatigue on overhead cuts
- Brushless motor delivers genuine 5,150 RPM — handles pressure-treated lumber and hardwood without bogging down
- Integrated dust port connects to standard 1-1/4 inch " shop vac hose and keeps cut line visible
❌ CONS
- 6-1/2 inch " blade caps max depth at 2-1/8 inch " — won't chew through 2x material in one pass when beveled
- No electric brake — blade spins down for several seconds after trigger release, which slows repeated plunge cuts
- Rafter hook placement feels awkward for left-handed users and sits close to the auxiliary handle
The Verdict
If you’ve ever wrestled a full-size 7-1/4" circular saw up a ladder one-handed, you already know why the DEWALT DCS566 exists. This 6-1/2" brushless saw trims over a pound of weight and a full inch of blade diameter off the standard form factor — and for most residential framing and sheathing work, you won’t miss the difference. What you trade in cutting depth, you get back in control and battery runtime.
What’s actually in the box
The bare tool ships with the saw, a combination blade (24-tooth carbide), a 3/8" hex wrench stored in the base plate, and the dust port adapter. No battery or charger — this is for buyers already invested in DEWALT’s 20V MAX system. The saw accepts both the compact 2Ah packs and the beefier 6Ah/8Ah batteries, though the larger packs shift the balance point noticeably rearward.
Build and real-world performance
The DCS566 runs a brushless motor rated at 5,150 RPM — identical to DEWALT’s corded models. That’s not marketing math; the saw genuinely has the torque to rip through stacked dimensional lumber without the RPM sag you get from cheaper brushed motors.
The magnesium shoe is flat and stays flat, with a 0-degree detent that clicks positively. The bevel adjustment uses a single lever — no tools required — and holds its setting even under vibration. Depth adjustment operates from the rear and is smooth, though the scale markings are stamped shallow and hard to read in dim light.
At 11.2 pounds with a 5Ah battery attached, the weight savings are real. The inline grip puts your wrist in line with the cut path, which reduces twisting on long rips. The integrated dust port does a solid job capturing about 60-70% of debris when connected to a shop vac — not perfect, but far better than the open-port designs on many competitors.
What owners consistently praise
The 4.7-star rating across 235 reviews isn’t an accident. Owners repeatedly highlight the power-to-weight ratio. One framer noted, “I was skeptical a 6-1/2 could replace my 7-1/4, but after a week of sheathing and rafters, I haven’t touched the corded saw once.” Multiple reviewers confirm the brushless motor handles pressure-treated lumber without bogging, and several mention the battery efficiency — with a 5Ah pack, you’ll get roughly 80-100 crosscuts on 2x material before needing a swap.
Where it falls short
The blade size is the tradeoff. Max depth at 90 degrees is 2-1/8", which means cutting a 2x4 in one pass? Fine. Cutting 2x6 or thicker? You’ll flip the material. At 45 degrees, depth drops to 1-9/16", so bevel cuts on 2x material require a second pass — a genuine workflow interruption if you do a lot of angled cuts.
There’s no electric brake. Trigger release leaves the blade spinning for several seconds. For safety-conscious users or anyone doing rapid plunge cuts repeatedly, this gets annoying fast. The rafter hook is also positioned for right-handed users; lefties will find it awkwardly placed near the auxiliary handle.
Who should buy this
Buy it if: You’re a carpenter, DIYer, or remodeler working primarily with dimensional lumber, plywood, and OSB. You value one-handed control on ladders and scaffolding. You’re already in the DEWALT 20V ecosystem and want a lighter companion to a full-size saw.
Skip it if: You regularly cut thick material (4x4s, 6x6s, stacked laminates) or need deep bevel cuts. You also might skip it if you’re starting fresh with no DEWALT batteries — the bare tool plus two 5Ah batteries and a charger runs roughly $250-300, which approaches the price of a corded saw plus a high-quality blade.
FAQ
Q: Does this saw accept standard 7-1/4" blades? No. The arbor is 5/8" (standard), but the blade diameter is locked at 6-1/2". You can use 6-1/2" blades from any manufacturer, including Diablo and Freud, but don’t try to mount a 7-1/4".
Q: Will a 6-1/2" blade cut through 2x4 lumber? Yes, at 90 degrees it cuts 2-1/8" deep, which fully penetrates a 1-1/2" thick 2x4. For 2x6 or thicker, you’ll need to flip the board or make two passes.
Q: What battery do you recommend for best balance? A 5Ah pack gives the best balance of runtime and weight. The compact 2Ah keeps it light but drains quickly under load. The 8Ah+ packs add noticeable rear weight that makes the saw feel nose-heavy on plunge cuts.
The Verdict
The DEWALT DCS566 is a genuinely well-executed mid-size saw that solves a real problem: cutting heavy material without the arm fatigue. It earns its 4.6/5 score through honest power, thoughtful ergonomics, and DEWALT’s reliable build quality. The lack of a brake and the depth limitations are real, but they’re the price of the lighter form factor — and for most users, that’s a trade worth making.
Buy it if you want a lighter daily driver for framing and sheathing. Skip it if your work regularly demands deep or beveled cuts through thick stock.
Where to Buy
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Last updated: 2026-08-06. Ratings and prices current as of review date. Verify on Amazon before purchasing.