DeWalt DCS578B 7-1/4 in. Circular Saw W/ DCB609 9.0Ah Battery and DCF845B 3-Speed Impact Driver

Key Features

Corded-Type Power

The brushless motor runs up to 5,800 RPM and is built to give this cordless circular saw the kind of output you want for framing, sheet goods, and repeated rip cuts.

Fast Blade Stop

The electronic brake stops the blade after you release the trigger, which helps when you are moving from cut to cut and setting the saw down between tasks.

Deep, Versatile Cuts

With a 2-9/16 inch max cut depth at 90 degrees and bevel capacity up to 57 degrees, this saw covers common framing cuts and gives you more flexibility for angled work.

Overview The DEWALT DCS578B 60V MAX Brushless Cordless 7-1/4 in. Circular Saw with Electronic Brake is a cordless framing saw built for pros who want corded-style cutting power without dragging a cord across the jobsite. This is a circular saw designed for framing, ripping sheet goods, and general construction cutting. Model Number: DCS578B. It is sold as a tool only, so batteries and charger are separate. The big story here is output. DEWALT rates this saw at a no-load speed of 5,800 RPM, and the platform is built around the FLEXVOLT 20/60V MAX battery system. In plain terms, that means you get a saw that is meant to keep pace on tough lumber cuts, repetitive framing work, and jobsite conditions where a smaller cordless circular saw can start to feel underpowered. DEWALT also states up to 47% more power versus the DCS575, which tells you this is positioned as a step-up saw for users who lean hard on their cordless platform. Cut capacity is where this model starts to matter for real buying decisions. It uses a 7-1/4 inch circular saw blade and delivers a maximum cut depth of 2-9/16 inches at 90 degrees. That makes it a practical fit for standard framing lumber and sheet material where full-depth cuts matter. On bevel work, the saw goes up to 57 degrees and includes stops at 22.5 degrees and 45 degrees. Those stop points save setup time when you are bouncing between common angle cuts instead of dialing everything in from scratch every time. DEWALT also gave this saw the jobsite features that actually earn their keep. The electronic brake stops the blade after the trigger is released, which is not just a spec to pad a bullet list. It helps when you are making repeated cuts, climbing staging, or setting the saw down often. The integrated LED light improves line visibility in dim spaces, inside unfinished interiors, and early morning exterior work. There is also an integrated rafter hook, which is one of those features you miss immediately on a saw that does not have one. From a build standpoint, the saw uses a magnesium shoe. That matters because the base needs to stay durable without making the tool heavier than it needs to be. A good shoe helps the saw track better across material and stand up to rougher handling in trucks, gang boxes, and active framing sites. Combined with the brushless motor layout and FLEXVOLT battery platform, this is clearly designed as a serious cordless circular saw for daily use rather than occasional punch-list work. System compatibility is straightforward. The DCS578B works with DEWALT FLEXVOLT 20/60V MAX batteries. If you are already on that platform, this saw makes a lot more sense because you can drop it into an existing battery rotation for high-demand cutting. If you are not on FLEXVOLT yet, factor that into the buy because this is a bare tool. The upside is that the platform is meant for heavier-duty cordless tools where runtime and power both matter. Who should buy it? This saw makes the most sense for framers, carpenters, remodelers, roofers, and general contractors who want a full-size cordless circular saw that can handle everyday structural cuts without feeling like a compromise. If your work is mostly trim, light cabinet installs, or occasional homeowner use, this may be more saw than you need. If you are cutting framing lumber, subfloor, sheathing, and want a cordless setup that does not feel soft under load, this one is aimed right at you.